可编程控制器的基本性能可用如下八条予以概括:
5.1工作速度
工作速度是指PLC的CPU执行指令的速度及对急需处理的输入信号的响应速度。工作速度是PLC工作的基础。速度高了,才可能通过运行程序实现控制,才可能不断扩大控制规模,才可能发挥PLC的多种多样的作用。
PLC的指令是很多的。不同的PLC。指令的条数也不同。少的几十条,多的几百条。指令不同,执行的时间也不同。但各种PLC总有一些基本指令,而且各种的PLC都有这些基本指令,故常以执行一条基本指令的时间来衡量这个速度。这个时间当然越短越好,已从微秒级缩短到零点微秒级。并随着微处理器技术的进步,这个时间还在缩短。
执行时间短可加快PLC对一般输入信号的响应速度。从讨论PLC的工作原理知,从对PLC加入输入信号,到PLC产生输出,最理想的情况也要延迟一个PLC运行程序的周期。因为PLC监测到输入信号,经运行程序后产生的输出,才是对输入信号的响应。不理想时,还要多延长一个周期。当输入信号送入PLC时,PLC的输入刷新正好结束,就是这种情况。这时,要多等待一个周期,PLC的输入映射区才能接受到这个新的输入信号。对一般的输入信号,这个延迟虽可以接受,但对急需响应的输入信号,就不能接受了。对急需处理的输人信号延迟多长时间PLC能予以响应,要另作要求。
为了处理急需响应的输入信号,PLC有种种措施。不同的PLC措施也不完全相同,提高响应速度的效果也不同。一般的作法是采用输入中断,然后再输出即时刷新,即中断程序运行后,有关的输出点立即刷新,而不等到整个程序运行结束后再刷新。
这个效果可从两个方面来衡量:一是能否对几个输入信号作快速响应;二是快速响应的速度有多快。多数PLC都可对一个或多个输入点作快速响应,快速响应时间仅几个毫秒。性能高的、大型的PLC响应点数更多。
工作速度关系到PLC对输入信号的响应速度,是PLC对系统控制是否及时的前提。控制不及时,就不可能准确与可靠,特别是对一些需作快速响应的系统。这就是把工作速度作为PLC第一指标的原因。
5.2控制规模
控制规模代表PLC控制能力,看其能对多少输入、输出点及对多少路模拟进行控制。
控制规模与速度有关。因为规模大了,用户程序也长,执行指令的速度不快,势必延长PLC循环的时间,也必然会延长PLC对输入信号的响应。为了避免这个情况,PLC的工作速度就要快。所以,大型PLC的工作速度总是比小的要快。
控制规模还与内存区的大小有关。规模大,用户程序长,要求有更大的用户存储区。同时点数多,系统的存储器输入、输出的信号区(输入输出继电器区或称输入、输出映射区)也大。这个区大,相应地内部器件(解释见后)也要增多,这些都要求有更大的系统存储区。
控制规模还与输入、输出电路数有关。如控制规模为1024点,那就得有1024条I/O电路。这些电路集成于I/O模块中,而每个模块有多少路的I/O点总是有数的。所以,规模大,所使用的模块也多。
控制规模还与PLC指令系统有关。规模大的PLC指令条数多,指令的功能也强,才能应付对点数多的系统进行控制的需要。
控制规模是对PLC其它性能指标起着制约作用的指标;也是PLC划分为微、小、中、大和特大型
5.3组成模块
PLC的结构虽有箱体及模块式之分,但从质上看,箱体也是模块,只是它集成了更多的功能。在此,不妨把PLC的模块组成当作所有PLC的结构性能。
这个性能含义是指某型号PLC具有多少种模块,各种模块都有什么规格,并各具什么特点。
一般讲,规模大的PLC,档次高的PLC模块的种类也多,规格也多,反映它的特点的性能指标也高。但模块的功能则单一些。相反,小型PLC、档次低的PLC模块种类也少,规格也少,指标也低。但功能则多样些,以至于集成为箱体。
组成PLC的模块是PLC的硬件基础,只有弄清所选用的PLC都具有那些模块及其特点,才能正确选用模块,去组成一台完整的PLC,以满足控制系统对PLC的要求。
常见的PLC模块有:
CPU模块,它是PLC的硬件核心。PLC的主要性能,如速度、规模都由它的性能来体现。
电源模块,它为PLC运行提供内部工作电源,而且,有的还可为输入信号提供电源。
I/O模块,它集成了I/O电路,并依点数及电路类型划分为不同规格的模块。
内存模块,它主要存储用户程序,有的还为系统提供辅加的工作内存。在结构上内存模块都是附加于CPU模块之中。
底板、机架模块,它为PLC各模块的安装提供基板,并为模块间的联系提供总线。若干底板间的联系有的用接口模块,有的用总线接口。不同厂家或同一厂家但不同类型的PLC都不大相同。
箱体式的小型PLC的主箱体就是把上述几种模块集成在一个箱体内的,并依可能提供I/O点数的多少,划分为不同的规格。
箱体式的PLC还有I/O扩展箱体,它不含CPU,仅有电源及I/O单元的功能。扩展箱体也依I/O点数的多少划分有不同的规格。
除上述模块,PLC还有特殊的或称智能或称功能模块。如A/D(模入)模块、D/A(模出)模块、高速计数模块、位控模块、温度模块等等。这些模块有自己的CPU,可对信号作预处理或后处理,以简化PLC的CPU对复杂的程控制量的控制。智能模块的种类、特性也大不相同,性能好的PLC,这些模块种类多,性能也好。
通讯模块,它接人PLC后,可使PLC与计算机,或PLC与PLC进行通讯,有的还可实现与其它控制部件,如变频器、温控器通讯,或组成局部网络。通讯模块代表PLC的组网能力,代表着当今PLC性能的重要方面。
掌握PLC性能,一定要了解它的模块,并通过了解模块的性能,去弄清楚PLC的性能。
除了模块,PLC还有外部设备。
尽管用PLC实现对系统的控制可不用外部设备,配置好合适的模块就行了。然而,要对PLC编程,要监控PLC及其所控制的系统的工作状况,以及存储用户程序、打印数据等,就得使用PLC的外部设备。故一种PLC的性能如何,与这种PLC所具外部设备丰富与否,外部设备好用与否直接相关。
PLC的外部设备有四大类:
编程设备:简单的为简易编程器,多只接受助记将编程,个别的也可用图形编程(如日本东芝公司的EX型可编程控制器)。复杂一点的有图形编程器,可用梯形图语编程。有的还有专用的计算机,可用其它高级语编程。编程器除了用于编程,还可对系统作一些设定,以确定PLC控制方式,或工作方式。编程器还可监控PLC及PLC所控制的系统的工作状况,以进行PLC用户程序的调试。
监控设备:小的有数据监视器,可监视数据;大的还可能有图形监视器,可通过画面监视数据。除了不能改变PLC的用户程序,编程器能做的它都能做,是使用PLC很好的界面。性能好的PLC,这种外部设备已越来越丰富。
存储设备:它用于永久性地存储用户数据,使用户程序不丢失。这些设备,如存储卡、存储磁带、软磁盘或只读存储器。而为实现这些存储,相应的就有存卡器、磁带机、软驱或ROM写入器,以及相应的接口部件。各种PLC大体都有这方面的配套设施。
输入输出设备:它用以接收信号或输出信号,便于与PLC进行人机对话。输入的有条码读入器,输入模拟量的电位器等。输出的有打印机、编程器、监控器虽也可对PLC输入信息,从PLC输出信息,但输入输出设备实现人机对话更方便,可在现场条件下实现,并便于使用。随着技术进步,这种设备将更加丰富。
外部设备已发展成为PLC系统的不可分割的一个部分。它的情况,当然是选用PLC必须了解的重要方面,所以也应把它列为PLC性能的重要内容。
5.4内存容量
PLC内存有用户及系统两大部分。用户内存主要用以存储用户程序,个别的还将其中的一部分划为系统所用。系统内存是与CPU配置在一起的。CPU既要具备访问这些内存的能力,还应提供相应的存储介质。
用户内存大小与可存储的用户程序量有关。内存大,可存储的程序量大,也就可进行更为复杂的控制。从发展趋势看,内存容量总是在不断增大着。大型PLC的内存容量可达几十k,以至于一百多k。系统内存对于用户,主要体现在PLC能提供多少内部器件。不同的内部器件占据系统内存的不同区域。在物理上并无这些器件,仅仅为RAM。但通过运行程序进行使用时,给使用者提供的却实实在在有这些器件。
内存器件种类越多,数量越多,越便于PLC进行种种逻辑量及模拟控制。它也是代表
PLC性能的重要指标。
PLC内部器件有:
I/O继电器,或称映射区。它与PLC所能控制的I/O点数及模拟量的路数直接相关。
内部继电器数,有的称为标志位数,代表着PLC的内部继电器数。它与I/O继电器区相联系着,有时与后者相联系进行处理。内部继电器多,便于PLC建立复杂的时序关系,以实现多种多样的控制要求。一般讲,内部继电器数比I/O继电器要多得多。
有的内部继电器还可丢电保持,即它的状态(ON或OFF)、PLC丢电后,靠内部电池仍予以保持。再上电后可继续丢电前的状态。保持继电器可增强PLC控制能力,特别对记录故障,故障排除后恢复运行,更显得有用。
定时器,可进行定时控制。定时值可任意设定。定时器有多少,设定范围有多大,设定值的分辨率又是多少,这些都代表定时器件的性能。
计数器,可进行计数,到达某设定计数值可发送相应信号。可进行什么样的计数,计数范围多大,怎么设定,有多少计数器,则是PLC计数器性能的代表指标。
数据存储区,用以存储工作数据。多以字、两字或多字为单位予以使用,是PLC进行模拟量控制,或记录数据所必不可少的。这个存储区的大小代表PLC的性能也是越大越好。趋势也是越来越大。小型机也如此。如日本OMRON公司的CQM1机,其DM区就有6k字。而过去同是小型机的C60P的DM区才64个字。大型机的DM可达10K以至几十K。
此外还有其它一些内部器件,了解某PLC性能时,也都必须掌握它。
内部器件也是PLC指令的操作数,不弄清楚是无法编程的。
5.5指令系统
PLC有多少条指令,各条指令又具有什么功能,是了解与使用PLC的重要方面。你不懂PLC指令怎么编程,没有程序,PLC又怎么工作?
PLC的指令越来越多,越来越丰富。功能很强的指令,综合多种作用的指令日见增多。
PLC的指令繁多,但主要的有这么几种类型:
基本逻辑指令,用于处理逻辑关系,以实现逻辑控制。这类指令不管什么样的PLC都总是有的。
数据处理指令,用于处理数据,如译码,编码,传送、移位等等。
数据运算指令,用于进数据的运算,如十、一、X、/等,可进行整形数计算,有的还可浮点数运算;也可进行逻辑量运算,等等。
流程控制指令,用以控制程序运行流程。PLC的用户程序一般是从零地址的指令开始执行,按顺序推进。但遇到流程控制指令也可作相应改变。流程控制指令也较多,运用得好,可使程序简练,并便于调试与阅读。
状态监控指令,用以监视及记录PLC及其控制系统的工作状态,对提高PLC控制系统的工作可靠性大有帮助。
当然,并不是所有的PLC都有上述那么多类的指令,也不是有的PLC仅有上述几类指令。以上只是指出几个例子,说明要从哪几个方面了解PLC指令,从中也可大致看出指令的多少及功能将怎样影响PLC的性能。
除了指令,为进行通讯,PLC还有相应的协议与通讯指令或命令,这些也反映了PLC的性能。
5.6支持软件
为了便于编制PLC程序,多数PLC厂家都开发有关计算机支持软件。
从本质上讲,PLC所能识别的只是机器语言。它之所以能使用一些助记符语言、梯形图语言、流程图语言,以至高级语言,全靠为使用这些语言而开发的种种软件。
助记符语言是最基本也是最简单的PLC语言。它类似计算机的汇编语言,PLC的指令系统就是用这种语言表达的。这种语言仅使用文字符号,所使用的编程工具简单,用简易编程器即可。所以,多数PLC都配备有这种语言。
梯形图语言是图形语言,它用类似于继电器电路图的符号表达PLC实现控制的逻辑关系。这种语言与符号语言有对应关系,很容易互相转换,并便于电气工程师了解与熟悉,故用得很普遍,几乎所有的PLC都开发有这种语言。由于它是用图形表达,小的编程器不好使用它,得有较大的液晶画面的编程器,才能使用它。多数是在计算机对PLC编程时,才使用这种语言。
流程图语言,它也是图形语言,不过所用的符号不与电气元件符号相似,而与计算机用的流程图符号相似,便干计算机工作人员了解与熟悉。流程图语言与符号语言也有一一对应关系,只是它对应的符号语言与梯形图的对应不一样。熟悉计算机而又未从事过一般电气工作的人员,乐于用这种语言对PLC编程。日本OMRON公司开发的F系列机就是使用这种语言。
梯形图与流程图混合语言。这种语言,梯形图与流程图两者兼用,可使PLC程序结构化。它用流程图把PLC程序划分成若干结构块,并规范块间的逻辑联系。用梯形图再确定块中的种种量间的逻辑关系。这种混合语言有不同的实现方法,而且多用于大型的PLC的编程
高级语言,PLC编程也可以使用高级语言,如BASIC、C语言等。可以在DOS,也可在WINDOWS平台上运行。关键在于要把用高级语言编写的程序转换成助记符语言,或直接转换成PLC所能识别的机器语言。从根本上讲,只要能实现这个转换的,什么高级语言都可以。而编写这个转换的软件工作量很大,当然应由有关厂家开发与提供。当前不少PLC厂家已有提供。如GE-FANAC的PLC就提供有可用C语言编程的软件。
再前进一步,从理论上讲使用自然语言编程也是完全可能的。只是要下力气去开发,以及市场有这个需要。
支持软件不仅编制PLC程序需要,监控PLC运行,特别是监视PLC所控制的系统的工作状况也需要。所以,多数支持编程的软件,也具有监视PLC工作的功能。
此外,也有专用于监控PLC工作的软件,它多与PLC的监视终端连用。
有的PLC厂家或第三方厂家还开发了使用PLC的组态软件,用以实现计算机对PLC控制系统监控,以及与PLC交换数据。
PLC的用户也可基于DOS或WINDOWS平台开发用于PLC控制系统的应用软件,以提高PLC系统自动化及智能化水平。这方面的软件已日益受到重视。
总之,为了用好PLC,PLC的支持软件越来越丰富,性能也越来越好,其界面也越来越友好,也因此,它的情况如何,已成为评判PLC性能的指标之一。
5.7可靠控制
为使PLC能可靠工作,在硬件与软件两个方面PLC厂家都采取了很多措施,对一些特殊可靠要求的PLC,还有相应的特殊的措施,如热备、冗余等等。这在介绍PLC的特点时已作了叙述。可靠措施的目的是增加PLC平均故障间隔时间、MTBF(MeanTimeBetweenFailure)及减少PLC的平均修复时间、MTTR(MeanTimeToRepair),以提高PLC的有效度A(Availability)。
A=MTBF/(MTBF+MTTR)
式中A--有效率
MTBF--平均故障间隔时间
MTTR--平均修复时间
当然,A值越大越好,它可使PLC系统得到充分的利用,是为什么要使用PLC的重要指标。而从上式可知,MTBF越大,MTTR越小,则A越大。所以,PLC的可靠措施都是围绕提高MTBF及MTTR值进行的。
鉴于可靠工作是PLC的重要特点,至关重要,故有关提高MTBF及降低MTTR的措施如何,以及PLC的MTBF与MTTR值也成为PLC性能的重要指标。
5.8经济指标
以上七条讲的都是PLC的技术性能。其实,使用PLC,还要考虑经济指标。经济是基础,经济上不合算,不能带来经济效益,使用PLC也就没有基础。所以,这个指标也是重要的。经济指标最简单的就是看价格。一般讲,同样技术性能的PLC,价格低其经济指标就好
此外,还要看供货情况,供货不及时,影响使用,价格即使低,也不一定就好;看技术服务,资料不全,用户出现问题得不到技术支持也不好。
对经济指标还要作综合分析,要看使用了PLC能否带来效益,然后,再分析使用哪家的PLC效益更好些
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Westinghouse/Cutler Hammer RE1020 120V 20A 1 Pole UL Listed
Westinghouse/Cutler Hammer QPGF1015 GFCI 15Ampere 1/Single Pole Circuit Breaker
WESTINGHOUSE/CUTLER HAMMER LAM LONG ACCELERATION MODULE MOR RELAY
WESTINGHOUSE/CUTLER HAMMER LAM LONG ACCELERATION MODULE MOR RELAY
Westinghouse/Cutler Hammer GHB1020
WESTINGHOUSE/CUTLER HAMMER CIRCUIT BREAKER HKB3225 3POLE 225AMP 600VAC
WESTINGHOUSE/CUTLER HAMMER CIRCUIT BREAKER HFB3190ML 3POLE 90AMP 600VOLT
WESTINGHOUSE/CUTLER HAMMER CIRCUIT BREAKER HFB3110 3POLE 110AMP 600VOLT
WESTINGHOUSE/CUTLER HAMMER CIRCUIT BREAKER HFB3100 3POLE 100AMP 600VOLT
WESTINGHOUSE/CUTLER HAMMER CIRCUIT BREAKER HFB3100 3POLE 100AMP 600VOLT
WESTINGHOUSE/CUTLER HAMMER CIRCUIT BREAKER HFB3070L 3POLE 70AMP 600VOLT
WESTINGHOUSE/CUTLER HAMMER CIRCUIT BREAKER HFB3050V 3POLE 50AMP 600VOLT
WESTINGHOUSE/CUTLER HAMMER CIRCUIT BREAKER HFB3050V 3POLE 50AMP 600VOLT
WESTINGHOUSE/CUTLER HAMMER CIRCUIT BREAKER HFB3050 3POLE 50AMP 600VOLT
WESTINGHOUSE/CUTLER HAMMER CIRCUIT BREAKER HFB3040 3POLE 40AMP 600VOLT
WESTINGHOUSE/CUTLER HAMMER CIRCUIT BREAKER HFB3030VL 3POLE 30AMP 600VOLT
WESTINGHOUSE/CUTLER HAMMER CIRCUIT BREAKER HFB3015L 3POLE 15AMP 600VOLT
WESTINGHOUSE/CUTLER HAMMER CIRCUIT BREAKER HFB1020 1POLE 20AMP 277VAC
WESTINGHOUSE/CUTLER HAMMER CIRCUIT BREAKER HF3070 3POLE 70AMP 600VOLT
WESTINGHOUSE/CUTLER HAMMER CIRCUIT BREAKER HF3050 3POLE 50AMP 600VOLT
WESTINGHOUSE/CUTLER HAMMER CIRCUIT BREAKER HF3040 3POLE 40AMP 600VOLT
WESTINGHOUSE/CUTLER HAMMER CIRCUIT BREAKER HF3030 3POLE 30AMP 600VOLT
WESTINGHOUSE/CUTLER HAMMER CIRCUIT BREAKER HF3020 3POLE 20AMP 600VOLT
WESTINGHOUSE/CUTLER HAMMER CIRCUIT BREAKER HF3015 3POLE 15AMP 600VOLT
WESTINGHOUSE/CUTLER HAMMER CIRCUIT BREAKER FS130020A 1POLE 20AMP 277VOLT
WESTINGHOUSE/CUTLER HAMMER CIRCUIT BREAKER FS130020A 1POLE 20AMP 277VOLT
WESTINGHOUSE/CUTLER HAMMER CIRCUIT BREAKER FC3040 3POLE 40AMP 480VOLT
WESTINGHOUSE/CUTLER HAMMER CIRCUIT BREAKER FC3030 3POLE 30AMP 480VOLT
WESTINGHOUSE/CUTLER HAMMER CIRCUIT BREAKER FC3020 3POLE 20AMP 480VOLT
WESTINGHOUSE/CUTLER HAMMER CIRCUIT BREAKER FC3015 3POLE 15AMP 600VOLT
WESTINGHOUSE/CUTLER HAMMER CIRCUIT BREAKER FB3190MRL 3POLE 90AMP 600VOLT
WESTINGHOUSE/CUTLER HAMMER CIRCUIT BREAKER FB3150L 3POLE 150AMP 600VOLT
WESTINGHOUSE/CUTLER HAMMER CIRCUIT BREAKER FB3150 3POLE 150AMP 600VOLT
WESTINGHOUSE/CUTLER HAMMER CIRCUIT BREAKER FB3110 3POLE 110AMP 600VOLT
WESTINGHOUSE/CUTLER HAMMER CIRCUIT BREAKER FB3070 3POLE 70AMP 600VOLT
WESTINGHOUSE/CUTLER HAMMER CIRCUIT BREAKER FB3045MRL 3POLE 45AMP 600VOLT
WESTINGHOUSE/CUTLER HAMMER CIRCUIT BREAKER FB3035 3POLE 35AMP 600VOLT
WESTINGHOUSE/CUTLER HAMMER CIRCUIT BREAKER FB3030S 3POLE 30AMP 600VOLT
WESTINGHOUSE/CUTLER HAMMER CIRCUIT BREAKER FB3025 3POLE 25AMP 600VOLT
WESTINGHOUSE/CUTLER HAMMER CIRCUIT BREAKER FB3020 3POLE 20AMP 600VOLT
WESTINGHOUSE/CUTLER HAMMER CIRCUIT BREAKER FB2030 2POLE 30AMP 600VOLT
WESTINGHOUSE/CUTLER HAMMER CIRCUIT BREAKER FB2030 2POLE 30AMP 600VOLT
WESTINGHOUSE/CUTLER HAMMER CIRCUIT BREAKER FB2020 2POLE 20AMP 600VOLT
WESTINGHOUSE/CUTLER HAMMER CIRCUIT BREAKER FB1015 1POLE 15AMP 125VOLT DC
WESTINGHOUSE/CUTLER HAMMER CIRCUIT BREAKER FA3530SM 3POLE 5AMP 600VOLT
WESTINGHOUSE/CUTLER HAMMER CIRCUIT BREAKER FA3190M 3POLE 25AMP 600VOLT
WESTINGHOUSE/CUTLER HAMMER CIRCUIT BREAKER FA3090 3POLE 90AMP 600VOLT
WESTINGHOUSE/CUTLER HAMMER CIRCUIT BREAKER FA3015 3POLE 15AMP 600VOLT
WESTINGHOUSE/CUTLER HAMMER CIRCUIT BREAKER FA2100 2POLE 100AMP 600VOLT
WESTINGHOUSE/CUTLER HAMMER CIRCUIT BREAKER FA2050 2POLE 50AMP 600VOLT
WESTINGHOUSE/CUTLER HAMMER CIRCUIT BREAKER F3100 3POLE 100AMP 600VOLT
WESTINGHOUSE/CUTLER HAMMER CIRCUIT BREAKER F3090 3POLE 90AMP 600VOLT
WESTINGHOUSE/CUTLER HAMMER CIRCUIT BREAKER F3070 3POLE 70AMP 600VOLT
WESTINGHOUSE/CUTLER HAMMER CIRCUIT BREAKER F3070 3POLE 70AMP 600VOLT
WESTINGHOUSE/CUTLER HAMMER CIRCUIT BREAKER F3030 3POLE 30AMP 600VOLT
WESTINGHOUSE/CUTLER HAMMER CIRCUIT BREAKER F3025 3POLE 25AMP 600VOLT
WESTINGHOUSE/CUTLER HAMMER CIRCUIT BREAKER F3020 3POLE 20AMP 600VOLT
WESTINGHOUSE/CUTLER HAMMER CIRCUIT BREAKER F3015 3POLE 15AMP 600VOLT
WESTINGHOUSE/CUTLER HAMMER CIRCUIT BREAKER F2070 2POLE 70AMP 600VOLT
WESTINGHOUSE/CUTLER HAMMER CIRCUIT BREAKER EHD1020 1POLE 20AMP 277VOLT
WESTINGHOUSE/CUTLER HAMMER CIRCUIT BREAKER EHC3050 3POLE 50AMP 480VOLT
WESTINGHOUSE/CUTLER HAMMER CIRCUIT BREAKER EHC3040 3POLE 40AMP 480VOLT
WESTINGHOUSE/CUTLER HAMMER CIRCUIT BREAKER EHC3030 3POLE 30AMP 480VOLT
WESTINGHOUSE/CUTLER HAMMER CIRCUIT BREAKER EHC3020 3POLE 20AMP 480VOLT
WESTINGHOUSE/CUTLER HAMMER CIRCUIT BREAKER EHC2060 2POLE 60AMP 480VOLT
WESTINGHOUSE/CUTLER HAMMER CIRCUIT BREAKER EHB3035 3POLE 35AMP 480VOLT
WESTINGHOUSE/CUTLER HAMMER CIRCUIT BREAKER EHB3030 3POLE 30AMP 480VOLT
WESTINGHOUSE/CUTLER HAMMER CIRCUIT BREAKER EHB3020 3POLE 20AMP 480VOLT
WESTINGHOUSE/CUTLER HAMMER CIRCUIT BREAKER EHB3015 3POLE 15AMP 480VOLT
WESTINGHOUSE/CUTLER HAMMER CIRCUIT BREAKER EHB2070 2POLE 70AMP 480VOLT
WESTINGHOUSE/CUTLER HAMMER CIRCUIT BREAKER EHB2050 2POLE 50AMP 480VOLT
WESTINGHOUSE/CUTLER HAMMER CIRCUIT BREAKER EHB2020 2POLE 20AMP 480VOLT
WESTINGHOUSE/CUTLER HAMMER CIRCUIT BREAKER EHB2010 2POLE 10AMP 480VOLT
WESTINGHOUSE/CUTLER HAMMER CIRCUIT BREAKER EHB1100 1POLE 100AMP 277VOLT
WESTINGHOUSE/CUTLER HAMMER CIRCUIT BREAKER EHB1030 1POLE 30AMP 277VOLT
WESTINGHOUSE/CUTLER HAMMER CIRCUIT BREAKER EHB1020 1POLE 20AMP 277VOLT
WESTINGHOUSE/CUTLER HAMMER CIRCUIT BREAKER EH3025 3POLE 25AMP 240VOLT
WESTINGHOUSE/CUTLER HAMMER CIRCUIT BREAKER EC3100 3POLE 100AMP 240VOLT
WESTINGHOUSE/CUTLER HAMMER CIRCUIT BREAKER EB3100L 3POLE 100AMP 240VOLT
WESTINGHOUSE/CUTLER HAMMER CIRCUIT BREAKER EB1100 1POLE 100AMP 125VOLT DC
WESTINGHOUSE/CUTLER HAMMER CIRCUIT BREAKER EA3050 3POLE 50AMP 240VOLT
WESTINGHOUSE/CUTLER HAMMER CIRCUIT BREAKER E3100 3POLE 100AMP 240VOLT
WESTINGHOUSE/CUTLER HAMMER CIRCUIT BREAKER E3090 3POLE 90AMP 240VOLT
WESTINGHOUSE/CUTLER HAMMER CIRCUIT BREAKER E3070 3POLE 70AMP 240VOLT
WESTINGHOUSE/CUTLER HAMMER CIRCUIT BREAKER E3050 3POLE 50AMP 240VOLT
WESTINGHOUSE/CUTLER HAMMER CIRCUIT BREAKER E3035 3POLE 35AMP 240VOLT
WESTINGHOUSE/CUTLER HAMMER CIRCUIT BREAKER E3030 3POLE 30AMP 240VOLT
WESTINGHOUSE/CUTLER HAMMER CIRCUIT BREAKER E3025 3POLE 25AMP 240VOLT
WESTINGHOUSE/CUTLER HAMMER CIRCUIT BREAKER E3020 3POLE 20AMP 240VOLT
WESTINGHOUSE/CUTLER HAMMER CIRCUIT BREAKER E3015 3POLE 15AMP 240VOLT
WESTINGHOUSE/CUTLER HAMMER CIRCUIT BREAKER CC3125 3POLE 125AMP 240VOLT
WESTINGHOUSE/CUTLER HAMMER CIRCUIT BREAKER CA3225X 3POLE 225AMP 240VOLT
WESTINGHOUSE/CUTLER HAMMER CIRCUIT BREAKER CA3175X 3POLE 175AMP 240VOLT
WESTINGHOUSE/CUTLER HAMMER CIRCUIT BREAKER CA3125 3POLE 125AMP 240VOLT
WESTINGHOUSE/CUTLER HAMMER CIRCUIT BREAKER CA2125 2POLE 125AMP 240VOLT
WESTINGHOUSE/ ATC FROST LR23056. U2-3.
WESTINGHOUSE ZTH001 NSPP ZTH001
WESTINGHOUSE ZTAPN-361HJ USPP ZTAPN361HJ
WESTINGHOUSE ZTAP-361H-R USPP ZTAP361HR
WESTINGHOUSE ZE3U USPP ZE3U
WESTINGHOUSE Z22A NSFP Z22A
WESTINGHOUSE Z22A Z STYLE 133A595GO4 GENERAL PURPOSE RELAY 25
WESTINGHOUSE Z22A Z STYLE 133A595GO4 GENERAL PURPOSE RELAY 25
WESTINGHOUSE Z20B NSFP Z20B
WESTINGHOUSE Z1893A80H07 NSFP Z1893A80H07
WESTINGHOUSE Z1893A80H07 NSFP Z1893A80H07
WESTINGHOUSE Z.63 USPP Z63
WESTINGHOUSE Z.63 NSFP Z63
WESTINGHOUSE Y-55 USPP Y55
WESTINGHOUSE Y-55 NSPP Y55
Westinghouse X49 Overload Relay Heater
WESTINGHOUSE X338148 USPP X338148
WESTINGHOUSE X19K-G11 USPP X19KG11
WESTINGHOUSE X-0.49 NSFP X049
WESTINGHOUSE X-.49 USPP X49
WESTINGHOUSE WT1C1 NSPP WT1C1
WESTINGHOUSE WT1C1 NSFP WT1C1
WESTINGHOUSE WRSKL72 ELECTRICAL RESET WITH TRIP 53
WESTINGHOUSE WRSKL72 ELECTRICAL RESET WITH TRIP 53
WESTINGHOUSE WRSKL72 ELECTRICAL RESET WITH TRIP 53
WESTINGHOUSE WRSK24 NSFP WRSK24
WESTINGHOUSE WPONI USPP WPONI
WESTINGHOUSE WPBR1 ADVANTAGE CONTROL MODULE 20
WESTINGHOUSE WPBR1 ADVANTAGE CONTROL MODULE 20
WESTINGHOUSE WPBR1 ADVANTAGE CONTROL MODULE 20
Westinghouse WPBFV1 FV status only WPONI control uint for W200 starters
WESTINGHOUSE WPBFV1 Full Voltage status module
WESTINGHOUSE WM6S2G USPP WM6S2G
WESTINGHOUSE WM632FR USPP WM632FR
Westinghouse WLED internal trip indicator kit for W200 starters
WESTINGHOUSE WL922 USPP WL922
WESTINGHOUSE WL6080 NSFP WL6080
WESTINGHOUSE WL6012 NSFP WL6012
WESTINGHOUSE WL-5963 NSFP WL5963
WESTINGHOUSE WL-502A NSFP WL502A
Westinghouse WL-22809A Hollow Cathode Device Tube
Westinghouse WL-2 Trip Switch 796A209G06 Vintage NOS
Westinghouse WL-2 Trip Switch 796A209G06 Vintage NOS
WESTINGHOUSE WHUN361 30 AMPS 600V STAINLESS STEEL .
WESTINGHOUSE WHUN31 USPP WHUN31
WESTINGHOUSE WFP3150 150AMP PLUG-ON-CIRCUIT BREAKER $175
WESTINGHOUSE WFP3125 125AMP PLUG-ON-CIRCUIT BREAKER $150
WESTINGHOUSE WFP2200 USPP WFP2200
Westinghouse Weschler KA-241 Ammeter Style 291B461A26
WESTINGHOUSE WDIN NSFP WDIN
WESTINGHOUSE WCK63 USPP WCK63
WESTINGHOUSE WCK13 CONTACT KIT 3 POLE 20
WESTINGHOUSE WCK13 CONTACT KIT 3 POLE 20
WESTINGHOUSE WBASE34 UNIVERSAL BASE KIT
WESTINGHOUSE WATTHOUR METER CA-3 1956 OVAL VINTAGE
WESTINGHOUSE W-56 ELECTRICAL INTERLOCK
WESTINGHOUSE W-56 ELECTRICAL INTERLOCK
Westinghouse W31 auxiliary contact unstyle1A48174G10
Westinghouse W31 auxiliary contact kit 3 NO & 1 NC
WESTINGHOUSE W31 AUXILIARY CONTACT in good condition
WESTINGHOUSE W31 AUXILIARY CONTACT
WESTINGHOUSE W31 AUXILIARY CONTACT
WESTINGHOUSE W31 AUXILIARY CONTACT
WESTINGHOUSE W240M4CFCY7 NSFP W240M4CFCY7
WESTINGHOUSE W2200R NSFP W2200R
WESTINGHOUSE W22 USPP W22
WESTINGHOUSE W22 USPP W22
WESTINGHOUSE W210M3CFCY7 REVERSING STARTER 120VCOIL 50HP 90A 600V
WESTINGHOUSE W210M1CFCY7 USPP W210M1CFCY7
WESTINGHOUSE W210M1CFCY7 REVERSING STARTER 120VCOIL 10HP 27A 600V
WESTINGHOUSE W210M1CFCY7 NSPP W210M1CFCY7
WESTINGHOUSE W201MLCFC USPP W201MLCFC
WESTINGHOUSE W201K5CF NSFP W201K5CF
WESTINGHOUSE W201K1CF CONTACTOR 27 AMP 3 Ø 120V COIL 10 HP
WESTINGHOUSE W200S2CF NSFP W200S2CF
WESTINGHOUSE W200S1CF USPP W200S1CF
WESTINGHOUSE W200S1CF NSPP W200S1CF
WESTINGHOUSE W200S1CF NSFP W200S1CF
WESTINGHOUSE W200MLCFCY4Y7 USPP W200MLCFCY4Y7
WESTINGHOUSE W200MLCFC USPP W200MLCFC
Westinghouse W200MLCFC Starter STR1759
Westinghouse W200M4CFC non-reversing starter W200M4CFC
Westinghouse W200M4CFC non-reversing starter
Westinghouse W200M4CFC Nema Motor Starter 230v 460v 575v 100HP
WESTINGHOUSE W200M3CFC STARTER A.H12 120VCOIL 50HP 90A 600V
Westinghouse W200M3CFC non-reversing starter
Westinghouse W200M3CFC non-reversing starter
WESTINGHOUSE W200M2CFC USPP W200M2CFC
WESTINGHOUSE W200M1CFCY7 USPP W200M1CFCY7
WESTINGHOUSE W200M1CFC USPP W200M1CFC
WESTINGHOUSE W200M1CFC NSFP W200M1CFC
Westinghouse W-2 Rotary Switch 600V 20a 3629A04G01
WESTINGHOUSE W-2 NSFP W2
WESTINGHOUSE W192006 USPP W192006
WESTINGHOUSE W18 NSPP W18
Westinghouse W1654 Industrial Master Controller 330A336
WESTINGHOUSE W11T USPP W11T
WESTINGHOUSE W11T NSPP W11T
WESTINGHOUSE W/T ENCLOSURE MOTOR STARTER 1 OR 2 POLE S/PHASE TOGGLE SWITCH
WESTINGHOUSE W/STARTER-W200M2CFC & DISC. SWITCH
WESTINGHOUSE W/STARTER-W200M2CFC & DISC. SWITCH
WESTINGHOUSE W/H-5250C81G17 USPP WH5250C81G17
WESTINGHOUSE VZP3 USPP VZP3
WESTINGHOUSE VP2-840 USPP VP2840
WESTINGHOUSE VOLTMETER KA-241 0-600 V
WESTINGHOUSE VOLTAGE TRANSFORMER PPI 480/400Y120 7526A01G04
WESTINGHOUSE VISI-FLEX KIT COMPLETE 313C590G09
WESTINGHOUSE VISI-FLEX KIT COMPLETE 313C590G09
Westinghouse Visi-Flex Deion Switch Mod A 871014 600VAC 3p 60a NOS
WESTINGHOUSE VI4-841 NSFP VI4841
WESTINGHOUSE VFD
Westinghouse Veritrak RATIO SETPOINT INDICATOR 01-47495C01
Westinghouse Veritrak RATIO SETPOINT INDICATOR 01-47495C01
Westinghouse Veritrak RATIO SETPOINT INDICATOR 01-47495C01
WESTINGHOUSE VECTROL VTR2000-230/460-3 BOARD
Westinghouse Vari-Depth Shaft 47A4446G37
Westinghouse Vari-Depth Handle 504C323G03 w/ HDWE
Westinghouse Vari-Depth Handle 504C323G03 w/ HDWE
Westinghouse Vari-Depth Handle
Westinghouse Vari Depth Mechanism 930826 373D958G22
Westinghouse UVR RH MTG 24VDC NB breaker 4995D11G17
WESTINGHOUSE UVH1LT08K
WESTINGHOUSE UV RELEASE LA50197 FOR JA FRAME BREAKER
WESTINGHOUSE UV RELEASE LA50197 FOR JA FRAME BREAKER
Westinghouse undervoltage release assembly for KA Deion circuit breaker
Westinghouse undervoltage release 2 & 3 pole 800A MA breaker 457D727G01
Westinghouse undervoltage release MA 120V 457D727G05
WESTINGHOUSE UNBALANCED PHASE MODULE PUM 2608D22G18 NIB
WESTINGHOUSE ULM-1 NSFP ULM1
WESTINGHOUSE ULM UNDERLOAD MODULE MOR RELAY 2608D22G05 57297
Westinghouse Tyle A200 00-2 coils 110/120V 50/60hz style 505C806G01
WESTINGHOUSE TXK-1 USPP TXK1
WESTINGHOUSE TXK-1 TRANSFORMER KIT TXK1
WESTINGHOUSE TXK-1 TRANSFORMER KIT TXK1
WESTINGHOUSE TXK-1 NSFP TXK1
Westinghouse Two Polarized Automatic Plugs
WESTINGHOUSE TRN-1P-120AC USPP TRN1P120AC
Westinghouse Tri-Pac PB circuit breaker Fuse 1000PBPR14
Westinghouse Tri-Pac Collar Assemblies 624B100G02
Westinghouse Tri-Pac Breaker LAP3400PF 400 amp trip Nice Breaker
Westinghouse Tri-Pac Breaker LAP3400PF 150 amp trip Nice Breaker
Westinghouse Tri-Pac Breaker LAP3400F 400 amp trip Nice Breaker
Westinghouse Tri-Pac Breaker LA3400PF 400 amp trip Nice Breaker
WESTINGHOUSE TRIP UNIT ONLY PBF32000T SURPLUS
WESTINGHOUSE TRIP UNIT ONLY K2200T
WESTINGHOUSE TRIP UNIT LT3450T
WESTINGHOUSE TRIP UNIT HNB3900T
Westinghouse Trip Unit HKB3100T 3 Pole 30512
Westinghouse Trip Unit HKB3100T 3 Pole 30511
Westinghouse Trip Unit 3 Pole 400 AMP HLB3400T
Westinghouse Trip Breaker JB3225 600 VAC _ 225 Amp
Westinghouse Transber Unit PB3L120
Westinghouse Transber NIB Style 1F0895 MTCH.Volt 230/460 L Volt 115
WESTINGHOUSE TRANSFORMER KVA 2 SINGLE PHASE 2D46502H01 S20N11S02N
Westinghouse Transber Kit TXK-1 Dual Voltage
WESTINGHOUSE TRANSFORMER DIFF. RELAY 290B346A10B
WESTINGHOUSE TRANSFORMER DIFF. RELAY 290B346A10B
WESTINGHOUSE TRANSFORMER CAT. NO. 1F4016 MTC
WESTINGHOUSE TRANSFORMER CAT. NO 1F2942 MTC
Westinghouse Transber 500 kVa 480 x 600 88B0326
Westinghouse Transber 3kVA 240 x 480 120/240 V 3 kVA
WESTINGHOUSE TRANSFORMER 230/460 HV 115 LV 0.100 KVA MODEL 112D631H03
Westinghouse Transber 1F4749 100kva 60hz WARRANTY
WESTINGHOUSE TRANSFORMER EMP- 0.6 480V
WESTINGHOUSE TRANSFORMER EMP- 0.6 288V
WESTINGHOUSE TR5-1A NSPP TR51A
WESTINGHOUSE TR0N-2P120A USPP TR0N2P120A
WESTINGHOUSE TME DELAY RELAY
WESTINGHOUSE TME DELAY RELAY
WESTINGHOUSE TM1 NSPP TM1
Westinghouse TK Relay
Westinghouse TK Relay
WESTINGHOUSE TK RELAY 575V 60 CYCLE STYLE 1096878-C 43587
Westinghouse Time Relay 146567 AM WARRANTY
Westinghouse TI-2 current overload relay 572D719G01
Westinghouse TI-2 current overload relay 572D719G01
Westinghouse Thyristor Breaker 179C368G14 600VAC 50 Amp 646
WestingHouse Thermostat 0-100F 9123-R0010-7525
Westinghouse Thermal Overload Relay Non Compensated 3 Pole NEMA AN13P NIB
Westinghouse Thermal Overload Relay Non Compensated 3 Pole NEMA AN13P NIB
Westinghouse Thermal overload relay MW-21 MW21
Westinghouse Thermal overload relay MW-11 MW11
Westinghouse Thermal overload relay MW FOR MW31 & MW41
WESTINGHOUSE THERMAL OVERLOAD RELAY CATAN21A NIB
WESTINGHOUSE THERMAL OVERLOAD RELAY CATAA13P
Westinghouse Thermal Overload Relay CatAA11PB. NOS
Westinghouse Thermal Overload Relay AN23A 3 pole 2
WESTINGHOUSE THERMAL OVERLOAD RELAY AN11P MODEL 1P S 371D596G11 NIB
Westinghouse Thermal Overload Relay AN11A
Westinghouse Thermal Overload Relay AA43P 3 Pole 4
Westinghouse Thermal Overload Relay AA43P 3 Pole 4
WESTINGHOUSE THERMAL OVERLOAD RELAY AA23P CONTROL CIRCUIT 600 V C930715 MODEL J
WESTINGHOUSE THERMAL OVERLOAD RELAY AA13PB MODEL J
WESTINGHOUSE THERMAL OVERLOAD RELAY AA13PB
Westinghouse Thermal Overload Relay A200MICVC AA13A J
Westinghouse Thermal Overload Relay 5662D74G08 for A/200 Starter NIB
Westinghouse Thermal Overload Relay 3P NEMA CatAN13A . ZL-104
WESTINGHOUSE THERMAL OVERLOAD RELAY 30 AMP MAX MODEL BA13A
Westinghouse Thermal Overload Heating Element 96648
Westinghouse Thermal Overload Heating Element 96648
Westinghouse Thermal Overload Heaters FH83of 3
Westinghouse Thermal Overload Heaters FH29of 3
Westinghouse Thermal Overload Heater H54 WARRANTY
Westinghouse Thermal Overload Heater 81D1
Westinghouse Thermal Overload Heater 81D
Westinghouse Thermal Magnetic Trip Unit KT3350T
WESTINGHOUSE TG-440VAC USPP TG440VAC
WESTINGHOUSE TERMINAL LUGS TA800MA2 3/8"
WESTINGHOUSE TERMINAL ASSEMBLY CAT3TA400K
WESTINGHOUSE TBAT70 NSFP TBAT70
Westinghouse TAP-362-W Fusible Switch Plug In Unit 600V 60A 3PH 50HP
WESTINGHOUSE TAP-362H USPP TAP362H
Westinghouse TAP-362H Bus Duct 600V 60A 3PH
WESTINGHOUSE TAP362 NSPP TAP362
WESTINGHOUSE TAP362 NSFP TAP362
Westinghouse TAP-362 Fusible Switch 600V 60A 3PH
Westinghouse TAP-362 Busway Fusible Switch 600V 60A
Westinghouse TAP-362 Busway Fusible Switch 600V 60A
Westinghouse TAP-362 Bus Plug 60 amp 600V TAP362
WESTINGHOUSE TAP362 60AMP 600 VOLT BUSWAY FUSIBLE SWITCH STYLE 2528D48G03
WESTINGHOUSE TAP362 60AMP 600 VOLT BUSWAY FUSIBLE SWITCH STYLE 2528D48G03
WESTINGHOUSE TAP-361-H USPP TAP361H
WESTINGHOUSE TAP-361A USPP TAP361A
WESTINGHOUSE TAP-323 USPP TAP323
WESTINGHOUSE TAP-323 USPP TAP323
WESTINGHOUSE TAP322 USPP TAP322
Westinghouse Tap-322 Bus Duct Fusible Switch 240 Volt
WESTINGHOUSE TAP-322 60 AMP BUSWAY FBUS PLUG 3Ø 3 WIRE 240V
WESTINGHOUSE TAP321N TAP321 NEUTRAL 30 AMP 240V FUSIBLE BUS PLUG N250KV TAP421
WESTINGHOUSE TAP321N TAP321 NEUTRAL 30 AMP 240V BUS PLUG TAB N250KV TAP421
WESTINGHOUSE TAP-321-A USPP TAP321A
WESTINGHOUSE TAP321 USPP TAP321
Westinghouse Tap-321 Bus Duct Fusible Switch 240 Volt
WESTINGHOUSE TAP TAP364 200 AMP 600V FUSIBLE FBUSS BUS PLUG
WESTINGHOUSE TAP TAP364 200 AMP 600V FUSIBLE FBUSS BUS PLUG
WESTINGHOUSE TAP TAP362H 60 AMP 600V FUSIBLE FBUSS BUS PLUG LABEL
WESTINGHOUSE TAP TAP362H 60 AMP 600V FUSIBLE BUSS BUS PLUG TAB INSIDE
WESTINGHOUSE TAP TAP362 60 AMP 600V BUS PLUG N250KV TAP462
WESTINGHOUSE TAP TAP323N TAP323 NEUTRAL 100 AMP 240V BUS PLUG N250KV TAP423
WESTINGHOUSE TAP TAP323N TAP323 NEUTRAL 100 AMP 240V BUS PLUG N250KV TAP423
WESTINGHOUSE TAP TAP323N TAP323 NEUTRAL 100 AMP 240V BUS PLUG N250KV TAP423
WESTINGHOUSE TAP TAP323N TAP323 NEUTRAL 100 AMP 240V BUS PLUG N250KV TAP423
WESTINGHOUSE TAP TAP322N TAP322 NEUTRAL 60 AMP 240V BUS PLUG N250KV TAP422
WESTINGHOUSE TAP TAP322N TAP322 NEUTRAL 60 AMP 240V BUS PLUG N250KV TAP422
WESTINGHOUSE TAD3 TERMINAL ADAPTER 5092A64G07NIB
WESTINGHOUSE TAD3 TERMINAL ADAPTER 5092A64G07NIB
WESTINGHOUSE TA800MA2 USPP TA800MA2
WESTINGHOUSE TA800MA2 NSPP TA800MA2
WESTINGHOUSE TA800MA2 NSFP TA800MA2
WESTINGHOUSE TA800MA2 ALUMINUM TERMINAL LUGS NIB
WESTINGHOUSE TA800MA1 USPP TA800MA1
WESTINGHOUSE TA700NB1 TWO CABLE TERMINALNIB
WESTINGHOUSE TA700MA1 TWO CABLE TERMINALNIB
WESTINGHOUSE TA600-LA NSFP TA600LA
WESTINGHOUSE TA400LAI USPP TA400LAI
WESTINGHOUSE TA400LAI TERMINALNIB
Westinghouse TA400LAI terminal double cable 4 MCM & 3/0-600 MCM cu-al for LA Br
WESTINGHOUSE TA300K TERMINAL ASSEMBLEY
WESTINGHOUSE TA300K NSFP TA300K
WESTINGHOUSE TA250KB USPP TA250KB
Westinghouse TA225LAI Terminal Single Cable 225AMP
WESTINGHOUSE TA225CA2 NSPP TA225CA2
WESTINGHOUSE TA225CA2 NSFP TA225CA2
WESTINGHOUSE TA-20 MW OVERLOAD 2 RELAY HEATER
Westinghouse TA175CAI Terminal Block Single Cable 225AMP
WESTINGHOUSE TA1201NB1 USPP TA1201NB1
WESTINGHOUSE TA1201NB1 NSPP TA1201NB1
WESTINGHOUSE T710083504BY NSPP T710083504BY
WESTINGHOUSE T700NB1 NSFP T700NB1
WESTINGHOUSE T700043504BY NSPP T700043504BY
WESTINGHOUSE T6E217 NSFP T6E217
WESTINGHOUSE T6E216 NSFP T6E216
WESTINGHOUSE T-6E197 USPP T6E197
WESTINGHOUSE T607121344BT USPP T607121344BT
WESTINGHOUSE T6070515348K USPP T6070515348K
WESTINGHOUSE T6070515348K NSPP T6070515348K
WESTINGHOUSE T600MA1 USPP T600MA1
WESTINGHOUSE T600MA1 NSPP T600MA1
WESTINGHOUSE T600LA USPP T600LA
WESTINGHOUSE T600LA USPP T600LA
WESTINGHOUSE T600LA NSPP T600LA
WESTINGHOUSE T600LA NSFP T600LA
WESTINGHOUSE T600042004BT SCR 400V 175AMP TO-93
WESTINGHOUSE T600042004BT SCR 400V 175AMP TO-93
Westinghouse T56A Tie Point
WESTINGHOUSE T520141304 USPP T520141304
WESTINGHOUSE T510065005-AB-8152 USPP T510065005AB8152
WESTINGHOUSE T510055007-AB-8208 USPP T510055007AB8208
WESTINGHOUSE T510055007-AB-8030 USPP T510055007AB8030
WESTINGHOUSE T507128054AQ USPP T507128054AQ
WESTINGHOUSE T507088054A POWER SCR THYRISTOR LOT
WESTINGHOUSE T507068084AA NSPP T507068084AA
WESTINGHOUSE T50088004AQ SCR LOT
WESTINGHOUSE T500158005AQ USPP T500158005AQ
WESTINGHOUSE T500078005AQ USPP T500078005AQ
WESTINGHOUSE T401LA USPP T401LA
Westinghouse T401LA terminal lugs
WESTINGHOUSE T401LA NSFP T401LA
WESTINGHOUSE T400DA2 USPP T400DA2
Westinghouse T400DA2 terminal lugs for DA breaker 2 cable 250MCM 3/0 CU
Westinghouse T400DA2 terminal 2 cable 250mcm 3/0 CU
WESTINGHOUSE T400DA2 NSFP T400DA2
Westinghouse T350DA terminal lug for DA breaker single cable 250-500MCM
WESTINGHOUSE T350DA TERMINAL J3
WESTINGHOUSE T350DA NSFP T350DA
Westinghouse T350DA Lug Circuit Breaker 7646
WESTINGHOUSE T300K LUG TERMINAL ASSEMBLY Q8-4
WESTINGHOUSE T250KB USPP T250KB
WESTINGHOUSE T225LA NSFP T225LA
WESTINGHOUSE T1F0890 USPP T1F0890
Westinghouse T1-2 current overload relay
Westinghouse T1-2 current overload relay
WESTINGHOUSE T100FB USPP T100FB
WESTINGHOUSE T100FB NSPP T100FB
WESTINGHOUSE SWITCH 3 POLE DE-ION PART 371D266G01 NSN 5930-00-072-8961
WESTINGHOUSE SVM3AC USPP SVM3AC
WESTINGHOUSE SV1-40 NSFP SV140
Westinghouse surge suppressor A 200 120v coil
WESTINGHOUSE STYLE 363A018H68 FUSE
Westinghouse std DC UV release for AB Deion circuit breaker LA & LAP 12VDC
Westinghouse Starterwith enclosure
WESTINGHOUSE STARTER P/N A210M3CB 11-10 L-23v
WESTINGHOUSE STARTER MCC BUCKET 100 AMP HMCP100
WESTINGHOUSE STARTER MCC BUCKET 100 AMP HMCP100
Westinghouse Starter Man A100K1C 3 Phase 3 Pole
Westinghouse Starter COVER 504C755H01
Westinghouse Starter contact Kit from A200M3CAC
WESTINGHOUSE STARTER CONTACT KIT 373B331G21
WESTINGHOUSE STARTER CONTACT KIT 373B331G21
WESTINGHOUSE STARTER CONTACT KIT 373B331G21
WESTINGHOUSE STARTER CONTACT KIT 373B331G09
Westinghouse Starter Coil 505C806G01 NIB
Westinghouse Starter Coil 505C633G01 120v
Westinghouse Starter coil 505C633G01 110-120vac Nice & Priced to move
Westinghouse Starter coil 505C633G01 110-120vac
WESTINGHOUSE STARTER CATALOGA200M3CW 90 AMP
Westinghouse Starter Bucket 30 Amp HMCP030H1C with Control Face
Westinghouse Starter A200MICAC With 120V Coil 505C806G01 WH NIB
Westinghouse Starter A200MACAC 00 3 pole coil
Westinghouse Starter A200M5CAC Model J 120V Coil
Westinghouse Starter A200M5CAC 2045A41G01
Westinghouse Starter A200M5CAC 2045A41G01
Westinghouse Starter A200M4CAC Model K 30691
Westinghouse Starter A200M4CAC 3445
Westinghouse Starter A200M3CACP
Westinghouse Starter A200M3CAC 90 Amps 3444
Westinghouse Starter A200M3CAC 90 Amps 3444
Westinghouse Starter A200M3CAC 90 Amp 30039
Westinghouse Starter A200M3CAC 90 Amp 14728
Westinghouse Starter A200M3CAC 90 Amp 14728
Westinghouse Starter A200M3CAC 90 Amp 14728
Westinghouse Starter A200M2CAC 23030
Westinghouse Starter A200M1CW 3 PH 27 Amp
Westinghouse Starter A200M1CACD 30044
Westinghouse Starter A200K2CACM 20764
Westinghouse Starter 1 Pole 240 AC/DC Flush Plate NR 5074 E
Westinghouse Starter 1 Pole 240 AC/DC Flush Plate NR 5074 E
Westinghouse Starter 1 Pole 240 AC/DC Flush Plate NR 5074 E
Westinghouse Start Pushbutton Only PBK-1 For A/200
WESTINGHOUSE STAINLESS 30 AMP SAFETY SWITCH
WESTINGHOUSE STAINLESS 30 AMP FUSIABLE SAFETY SWITCH
Westinghouse SSK3 Selector Switch 3 Position Maintained
WESTINGHOUSE SSK3 NSPP SSK3
WESTINGHOUSE SSK-1SELECTOR SWITCH KIT. G1-5.
WESTINGHOUSE SSK-1SELECTOR SWITCH KIT. G1-5.
WESTINGHOUSE SSK-11 USPP SSK11
WESTINGHOUSE SSK-11 NSPP SSK11
WESTINGHOUSE SSK-11 NSFP SSK11
WESTINGHOUSE SSK SELECTOR SWITCH. G1-11.
WESTINGHOUSE SS-56-3 NSPP SS563
WESTINGHOUSE SS-56-3 NSFP SS563
WESTINGHOUSE SS-56 USPP SS56
WESTINGHOUSE SQC-050 USPP SQC050
Westinghouse Speed Motor Controls A900M1DAC Mod J
Westinghouse SPB-65 circuit breaker SPB65 2000 amp COMPACT Frame EO Operator
Westinghouse SPB-65 circuit breaker SPB65 1600 amp with Shunt UV Spring release
WESTINGHOUSE SPB100-1600 USPP SPB1001600
Westinghouse SPB-100 circuit breaker SPB100 800 amp Style1269C13G06
Westinghouse SPB-100 circuit breaker 2000 SPB100 Large Frame Bolt-in
Westinghouse SPB-100 circuit breaker 2000 amp SPB100 Large Frame EO Operator
Westinghouse SPB 100 circuit breaker 2000 amp Tested1 year warranty SPB-100
Westinghouse Solid State Timer BST-ON
Westinghouse Solid State Timer BST-ON
Westinghouse Solid State Timer BST-ON
Westinghouse Solid State Timer AR 177C430G09 120-60
Westinghouse Snap Switch PF S-1625 900
WESTINGHOUSE SMP-62 DC MOTOR PROTECTION RELAY MOTOGARD SERIES 2.5-7.0A AMP 46229
WESTINGHOUSE SMP-62 DC MOTOR PROTECTION RELAY MOTOGARD SERIES 2.5-7.0A AMP 46229
WESTINGHOUSE SMP-62 DC MOTOR PROTECTION RELAY MOTOGARD SERIES 2.5-7.0A AMP 46229
Westinghouse Smooth Stop Board PCB 7882C15G01
WESTINGHOUSE SMCU225KA OPERATING MECHANISM SURPLUS
WESTINGHOUSE SMCU150FD USPP SMCU150FD
WESTINGHOUSE SMCU150FD NSPP SMCU150FD
WESTINGHOUSE SMCU150FD NSFP SMCU150FD
WESTINGHOUSE SMCU100DS OPERATING MECHANISM DS SWITCH
Westinghouse SMCU100DS motor control switch 1265C50G01
Westinghouse SMCU100DS motor control switch 1265C50G01
Westinghouse SMCU100DS motor control switch 1265C50G01
Westinghouse SMCU100DS Motor Control A4
WESTINGHOUSE SMC400LA NSFP SMC400LA
WESTINGHOUSE SMC200-DS NSFP SMC200DS
WESTINGHOUSE SMC150FB NSFP SMC150FB
WESTINGHOUSE SMC100FB NSFP SMC100FB
WESTINGHOUSE SMC100DS NSFP SMC100DS
WESTINGHOUSE SMAN3FN4G1-C200MB44P1 USPP SMAN3FN4G1C200MB
WESTINGHOUSE SM225L NSFP SM225L
WESTINGHOUSE SM-18148-N3-1 NSFP SM18148N31
WESTINGHOUSE SM150R SAFETY HANDLE MECHANISM RIGHT HAND NIB
WESTINGHOUSE SM150R SAFETY HANDLE MECHANISM RIGHT HAND NIB
WESTINGHOUSE SLIDING PLATE HANDLE MECH. P/N 910919
WESTINGHOUSE SKB NSFP SKB
WESTINGHOUSE SKA NSFP SKA
WESTINGHOUSE SKA KA 225 AMP 600V BREAKER ENCLOSURE DISCONNECT
Westinghouse Single Contact Block Oil Tight OT1A NR NIB
Westinghouse Single Contact Block Oil Tight OT1A NR NIB
Westinghouse Siemens Programable Controller PC-2000-31 1A49184H03 6ES5-943-7UB11
WESTINGHOUSE SIEMENS NL590 6ES57888MA11 6ES5-788-8MA11
Westinghouse Shunt-Trip JA KA Breakers 2605D15G15
Westinghouse shunt trip for J K KL 440V S-940094 60A93G0G11
Westinghouse shunt trip assembly with cut off switch for MA circuit breaker
Westinghouse shunt trip assembly with cut off switch for LA circuit breaker
Westinghouse Shunt Trip 2606D57G19
WESTINGHOUSE SGS35 USPP SGS35
WESTINGHOUSE SG-293B255A26 NSPP SG293B255A26
WESTINGHOUSE SG USPP SG
WESTINGHOUSE SG 293B254A27 AUXILIARY RELAY Q6-5
WESTINGHOUSE SG 293B254A27 AUXILIARY RELAY Q6-5
WESTINGHOUSE SG 293B254A27 AUXILIARY RELAY Q6-5
Westinghouse SFB 100 Amp 600 Volt Load Center LOA1028
WESTINGHOUSE SF8D11S07N USPP SF8D11S07N
WESTINGHOUSE SF-43826-N3-1 OX-33 MILLIAMMETER
Westinghouse Servo Driver PC Card 2840A78G014QSD14 SUB Y
Westinghouse Series E 3 Pole 600VAC Molded Case Circuit Breaker E-7819 100A
WESTINGHOUSE SERIES C MOTOR CIRCUIT PROTECTORS
Westinghouse Series C Motor Circuit Protector HMCP HMCP007C0C 6630C87G05
WESTINGHOUSE SERIES C MOTOR CIRCUIT PROTECTOR CB5
Westinghouse Series C Motor Circuit Protector 30 Amps 3 Pole Line Load 931214-I
WESTINGHOUSE SERIES C MOTOR CIRCUIT PROTECTOR 3 AMP
WESTINGHOUSE SERIES C MOTOR CIRCUIT PROTECTOR HMCP
Westinghouse Series C Industrial Molded Case Circuit Breaker FDB3015L 15A
Westinghouse Series C Industrial Circuit BreakerFD3030L
Westinghouse Series C Industrial Circuit BreakerFD3030L
Westinghouse Series C Industrial Circuit Breaker KDB35k
Westinghouse Series C Industrial Circuit Breaker HFD3070L 70A 3POLES
Westinghouse Series C Industrial Circuit Breaker HFD 65K HFD3015L 15A 3POLE
Westinghouse Series C Industrial Circuit Breaker FD3015
WESTINGHOUSE SERIES C INDUSTRIAL CIRCUIT BREAKER EHD3050 NNB
Westinghouse Series C Industrial Circuit Breaker CB50
Westinghouse Series C Industrial Circuit Breaker CB400
Westinghouse Series C Industrial Circuit Breaker CB40
WESTINGHOUSE SERIES C INDUSTRIAL CIRCUIT BREAKER
WESTINGHOUSE SERIES C INDUSTRIAL BREAKER FDB3150L
Westinghouse Series C Ind. Circuit Breaker FD25K
WESTINGHOUSE SERIES C IND CIRCUIT BREAKER TFDB 14K
Westinghouse Series C Ind Circuit Breaker Frame HJD 65K HJD3250F 250A 3Pole
Westinghouse Series C HMCP Motor Circuit Protector
WESTINGHOUSE SERIES C HMCP CIRCUIT BREAKER HMCP003A0C
WESTINGHOUSE Series C HMCP 3 Amps 3 Pole 600VAC =
Westinghouse Series C EHD2025 Cutler Hammer Circuit Breaker
WESTINGHOUSE SERIES C CIRCUIT BREAKER HCPOO7CO
Westinghouse Series C Circuit Breaker 400 Amp 600 VAC 3 Pole KD3400F
Westinghouse Series C 800 Amp Circuit Breaker Cat. No. MD3800 600 VAC
WESTINGHOUSE SERIES C 400 AMP CIRCUIT BREAKER CAT KD3400F
WESTINGHOUSE SERIES C 100 AMP CIRCUIT BREAKER HMCP100R3S
Westinghouse Series A251 Reversing Contactor
WESTINGHOUSE SERIES 2100 FIVE STAR MOTOR CONTROL- MCC
Westinghouse Ser C HMCP Motor Circuit Breaker Protector 3 Pole 50 AMP HMCP050K2C
WESTINGHOUSE SEMI 1N4046-7209 NSFP 1N40467209
Westinghouse Seltronic Circuit Breaker 600 Amp 3 Pole 600 VAC LCA3600F
Westinghouse Selectronic 800amp Circuit Breaker MC3800F
Westinghouse Selector Switch OT2S1 2 Pos Maint. To Right 7860
WESTINGHOUSE SELECTOR SWITCH 373D113G24 ACCESS. KIT
WESTINGHOUSE SDSL344 USPP SDSL344
Westinghouse SDM33PB Open/Close/Stop/
Westinghouse SDM33PB Open/Close/Stop/
WESTINGHOUSE SD2PBUNIT NSFP SD2PBUNIT
WESTINGHOUSE SD2ELS USPP SD2ELS
WESTINGHOUSE SD-2-1246484 USPP SD21246484
WESTINGHOUSE SD-2-1246480 USPP SD21246480
WESTINGHOUSE SD2 PUSHBUTTON OPERATOR 59
WESTINGHOUSE SD1B0S NSFP SD1B0S
WESTINGHOUSE SD1A0S USPP SD1A0S
WESTINGHOUSE SD1A0S NSFP SD1A0S
WESTINGHOUSE SD1A0F NSPP SD1A0F
WESTINGHOUSE SCV-600MR CURRENT TRANSFORMER 6350C23H01 6005MR SURPLUS
WESTINGHOUSE SCV-600MR CURRENT TRANSFORMER 6350C23H01 6005MR SURPLUS
Westinghouse SCR Thyristor Diode T510055005AQ 8438
Westinghouse SCO Relay Style No. 6700D12 SCO-8
Westinghouse SCO Relay Style No. 6700D12 SCO-8
Westinghouse SCO Relay Style No. 6700D12 SCO-8
Westinghouse Schindler W250P2A 628D151-G17 Relays
Westinghouse Schindler Elevator 196C557H01 W459F Ferrule- 12 Pack
Westinghouse Safety/Knife Blade Switch 30Amp 240VAC 7.5 HP 3 PH3 HP 1 PH
Westinghouse Safety/Knife Blade Switch 30Amp 240VAC 7.5 HP 3 PH3 HP 1 PH
Westinghouse Safety Switches w/ Motor Starter 27 Amps
Westinghouse Safety Switch RHFN361 30A 600V
Westinghouse Safety Switch Panel/Motor Starter Combination PartA203R0AZB NIB
Westinghouse Safety Switch JHFN363C 100 Amp 28324
WESTINGHOUSE SAFETY SWITCH GF322N
Westinghouse Safety Switch Disconnect GUN323 100A 240V
WESTINGHOUSE SAFETY SWITCH DISCONNECT 200 AMP HUN364
WESTINGHOUSE SAFETY SWITCH 60A 240VAC HUN322
Westinghouse Safety Switch 60 Amp 240 VAC GFN422N
Westinghouse Safety Switch 60 Amp 240 VAC GFN422N
Westinghouse Safety Switch 30 amp 240v Stainless WHU321
Westinghouse Safety Switch 30 amp 240v Stainless WHU321
Westinghouse Safety Switch 100 Amp 240V 2 Pole
WESTINGHOUSE SAC-1 NSFP SAC1
WESTINGHOUSE S-966737 USPP S966737
WESTINGHOUSE S-943152D USPP S943152D
WESTINGHOUSE S-897933-D USPP S897933D
WESTINGHOUSE S-897930 USPP S897930
WESTINGHOUSE S-874128 USPP S874128
WESTINGHOUSE S844303 BRAKE COIL 76
WESTINGHOUSE S844303 BRAKE COIL 76
WESTINGHOUSE S844303 BRAKE COIL 76
WESTINGHOUSE S-844299 USPP S844299
WESTINGHOUSE S7282-29 USPP S728229
WESTINGHOUSE S-712498 USPP S712498
WESTINGHOUSE S-677C903G04 TRIP COIL 24VDC 58
WESTINGHOUSE S-677C903G04 TRIP COIL 24VDC 58
WESTINGHOUSE S-654239 USPP S654239
WESTINGHOUSE S-654213 USPP S654213
WESTINGHOUSE S-48N12S26A USPP S48N12S26A
Westinghouse S373D113G21 PUSHBUTTON KIT PBK11 START/ST
WESTINGHOUSE S-285637-D USPP S285637D
WESTINGHOUSE S-28449GG USPP S28449GG
WESTINGHOUSE S-28449GG USPP S28449GG
WESTINGHOUSE S-241967-D USPP S241967D
WESTINGHOUSE S20N11S0N IN A BOX
WESTINGHOUSE S-1764897 NSFP S1764897
WESTINGHOUSE S-1739610 USPP S1739610
WESTINGHOUSE S-1625564 USPP S1625564
WESTINGHOUSE S-1625564 NSPP S1625564
WESTINGHOUSE S1625563 USPP S1625563
WESTINGHOUSE S-1616103 USPP S1616103
WESTINGHOUSE S-1596633 USPP S1596633
WESTINGHOUSE S-151D786G08 USPP S151D786G08
WESTINGHOUSE S-151D786G04 USPP S151D786G04
WESTINGHOUSE S-1510786G08 1066
WESTINGHOUSE S-1491403 USPP S1491403
WESTINGHOUSE S-1491403 COIL Q2-3
WESTINGHOUSE S-1491403 COIL Q2-3
WESTINGHOUSE S-1491403 COIL Q2-3
WESTINGHOUSE S-1490646-B USPP S1490646B
Westinghouse S1490456 outboard L-60 Electrical Interlock
WESTINGHOUSE S-1470283 USPP S1470283
WESTINGHOUSE S-1470243-B USPP S1470243B
WESTINGHOUSE S-1470243-B USPP S1470243B
WESTINGHOUSE S-1470243 USPP S1470243
WESTINGHOUSE S-1470242-B USPP S1470242B
WESTINGHOUSE S-1470205-A USPP S1470205A
WESTINGHOUSE S-1470201B USPP S1470201B
WESTINGHOUSE S-1470201B NSPP S1470201B
WESTINGHOUSE S140D481G01 USPP S140D481G01
WESTINGHOUSE S-1406910-A USPP S1406910A
WESTINGHOUSE S-1406910 USPP S1406910
WESTINGHOUSE S-1344005 USPP S1344005
WESTINGHOUSE S-1303512-B USPP S1303512B
WESTINGHOUSE S-1289401 USPP S1289401
WESTINGHOUSE S-1289375 USPP S1289375
WESTINGHOUSE S-1186546 USPP S1186546
WESTINGHOUSE S1186539 USPP S1186539
WESTINGHOUSE S-1186538 USPP S1186538
WESTINGHOUSE S-1186537 USPP S1186537
WESTINGHOUSE S-1115662 USPP S1115662
WESTINGHOUSE S-1115655-C USPP S1115655C
WESTINGHOUSE S10N11S16N NSPP S10N11S16N
WESTINGHOUSE S10N06A26N NSFP S10N06A26N
WESTINGHOUSE S10N06A16N USPP S10N06A16N
WESTINGHOUSE S-1091349 USPP S1091349
WESTINGHOUSE S-1091345A USPP S1091345A
WESTINGHOUSE S-1033769 USPP S1033769
WESTINGHOUSE S-1018657-A USPP S1018657A
WESTINGHOUSE S-1014375C USPP S1014375C
westinghouse s-1 single pole switches 100 of them
westinghouse s-1 single pole switches 100 of them
WESTINGHOUSE S05DF15CC USPP S05DF15CC
WESTINGHOUSE S03DA48GC USPP S03DA48GC
WESTINGHOUSE S03CA12CA FULL WAVE SELENIUM RECTIFIER
Westinghouse RX-371 Voltmeter PG-23540-N3-3 0-500VDC
Westinghouse RV52BLSI RMS/R500 Digitrip 1232C97G02 Surplus
Westinghouse RT-458 Single Pole Breaker 20 Amp WOW
Westinghouse RT1747 Quicklag-C Breaker 15 Amp WOW
WESTINGHOUSE RRCM NSFP RRCM