联系人；罗林烽
电话；15080036302
QQ；1741511549
限位开关就是用以限定机械设备的运动极限位置的电气开关。限位开关有接触式的和非接触式的。接触式的比较直观，机械设备的运动部件上，安装上行程开关，与其相对运动的固定点上安装极限位置的挡块，或者是相反安装位置。当行程开关的机械触头碰上挡块时，切断了（或改变了）控制电路，机械就停止运行或改变运行。由于机械的惯性运动，这种行程开关有一定的“超行程”以保护开关不受损坏。非接触式的形式很多，常见的有干簧管、光电式、感应式等，这几种形式在电梯中都能够见到。当然还有更多的先进形式。
限位开关是一种常用的小电流主令电器。利用生产机械运动部件的碰撞使其触头动作来实现接通或分断控制电路，达到一定的控制目的。通常，这类开关被用来限制机械运动的位置或行程，使运动机械按一定位置或行程自动停止、反向运动、变速运动或自动往返运动等。
在电气控制系统中，限位开关的作用是实现顺序控制、定位控制和位置状态的检测。用于控制机械设备的行程及限位保护。构造：由操作头、触点系统和外壳组成。
在实际生产中，将限位开关安装在预先安排的位置，当装于生产机械运动部件上的模块撞击行程开关时，限位开关的触点动作，实现电路的切换。因此，行程开关是一种根据运动部件的行程位置而切换电路的电器，它的作用原理与按钮类似。
限位开关广泛用于各类机床和起重机械，用以控制其行程、进行终端限位保护。在电梯的控制电路中，还利用行程开关来控制开关轿门的速度、自动开关门的限位，轿厢的上、下限位保护
CUTLER HAMMER E51-CNF11 USPP E51CNF11
CUTLER HAMMER E51CNC1 NSFP E51CNC1
CUTLER HAMMER E51-CLT26PU USPP E51CLT26PU
CUTLER HAMMER E51-CLP3 NSFP E51CLP3
CUTLER HAMMER E51-CLP3 LIMIT SWITCH E51CLP3 PHOTOELECTRIC SENSOR EATON 
Cutler Hammer E51CLP1 
CUTLER HAMMER E51CLP1 PHOTOELECTRIC SENSOR
CUTLER HAMMER E51-CLP1 NSFP E51CLP1
CUTLER HAMMER E51CLF3 PHOTOELECTRIC SENSOR DARK 
CUTLER HAMMER E51CLF3 PHOTOELECTRIC SENSOR DARK 
CUTLER HAMMER E51-CLF3 NSFP E51CLF3
CUTLER HAMMER E51CLF1 NSFP E51CLF1
CUTLER HAMMER E51BLT5 PROXIMITY SWITCH SENSOR LIMIT 
CUTLER HAMMER E51BLT1 PROXIMITY SENSOR INDUCTIVE NO OR NC E51 E51L
CUTLER HAMMER E51-BLP2 USPP E51BLP2
CUTLER HAMMER E51-ALT2 NSPP E51ALT2
Cutler Hammer E51ALT1 
CUTLER HAMMER E51ALS6 NSFP E51ALS6
CUTLER HAMMER E51ALS26P NSFP E51ALS26P
Cutler Hammer E51ALP1 
CUTLER HAMMER E51ALP1 PHOTOELECTRIC SENSOR NIB
CUTLER HAMMER E51ALP1 NSFP E51ALP1
CUTLER HAMMER E50TD1 NSFP E50TD1
CUTLER HAMMER E50TD1 LIMIT SWITCH E50DD1 2 STEP E50ST 600V SER A2
CUTLER HAMMER E50TD1 LIMIT SWITCH 
Cutler Hammer E50SN E50DN1 Limit Switch
CUTLER HAMMER E50-SGN NSFP E50SGN
CUTLER HAMMER E50-L NSFP E50L
CUTLER HAMMER E506PC USPP E506PC
CUTLER HAMMER E506PC NSPP E506PC
CUTLER HAMMER E506PC NSFP E506PC
CUTLER HAMMER E50-6P USPP E506P
CUTLER HAMMER E50-6P NSPP E506P
Cutler Hammer E50 
CUTLER HAMMER E50-SAW1 NSFP E50SAW1
CUTLER HAMMER E50-SAN6P12 NSPP E50SAN6P12
CUTLER HAMMER E50-SAN6P12 NSFP E50SAN6P12
CUTLER HAMMER E50SAN6P USPP E50SAN6P
CUTLER HAMMER E50-SAL6PC-R USPP E50SAL6PCR
CUTLER HAMMER E50-SAL6PC-R NSPP E50SAL6PCR
CUTLER HAMMER E50SA6PC NSFP E50SA6PC
CUTLER HAMMER E50-SA6P20 USPP E50SA6P20
CUTLER HAMMER E50SA6P12 USPP E50SA6P12
CUTLER HAMMER E50-SA6P NSFP E50SA6P
Cutler Hammer E50SA E50DR1 E50RA Limit Switch
Cutler Hammer E50NN1 Limit Switch
Cutler Hammer E50NN1 Limit Switch
CUTLER HAMMER E50KL203A1 NSPP E50KL203A1
Cutler Hammer E50GNG1 Limit Switch - No Box
Cutler Hammer E50GNG1 Limit Switch
Cutler Hammer E50DT3 Pack of 6 Limit Switch Operating Head
Cutler Hammer E50DS3 Pack of 6 Limit Switch Operating Head
Cutler Hammer E50DS1 Pack of 6 Limit Switch Head Ser A1 - No Box
CUTLER HAMMER E50DNAC USPP E50DNAC
Cutler Hammer E50BT3 Limit Switch With Roller
CUTLER HAMMER E50-BS2 USPP E50BS2
CUTLER HAMMER E50-BS1 NSFP E50BS1
CUTLER HAMMER E50BR16P NSFP E50BR16P
CUTLER HAMMER E50-BR1 USPP E50BR1
CUTLER HAMMER E50-BR1 NSPP E50BR1
CUTLER HAMMER E50-BR1 NSPP E50BR1
CUTLER HAMMER E50-BR1 NSFP E50BR1
CUTLER HAMMER E50BR1 LIMIT SWITCH SIDE ROTARY NIB
CUTLER HAMMER E50BNS3 USPP E50BNS3
CUTLER HAMMER E50-BM1 USPP E50BM1
CUTLER HAMMER E50-BM1 USPP E50BM1
CUTLER HAMMER E50-BM1 NSFP E50BM1
CUTLER HAMMER E50BLS1 LIMIT SWITCH ConTROL ConTROLLER EATON
CUTLER HAMMER E50BLR1 NSPP E50BLR1
CUTLER HAMMER E50AW16PY1 LIMIT SWITCH WOBBLE STICK E50SA6P E50SAP E50KW3 EATON
CUTLER HAMMER E50AW1 NSFP E50AW1
CUTLER HAMMER E50AT5-W NSFP E50AT5W
Cutler Hammer E50AT5 Limit Switch
CUTLER HAMMER E50-AT36PC-W NSPP E50AT36PCW
CUTLER HAMMER E50-AT3 USPP E50AT3
Cutler Hammer E50AT3 Limit Switch Series A2 600V Eaton E50RA20 A1
CUTLER HAMMER E50AS5-W NSFP E50AS5W
CUTLER HAMMER E50AS36P USPP E50AS36P
CUTLER HAMMER E50AS3 NSFP E50AS3
CUTLER HAMMER E50-AS1 NSFP E50AS1
CUTLER HAMMER E50AR1S20 NSPP E50AR1S20
CUTLER HAMMER E50-AR1S12 NSFP E50AR1S12
CUTLER HAMMER E50-AR1P5-W NSFP E50AR1P5W
CUTLER HAMMER E50-AR1P4 NSFP E50AR1P4
CUTLER HAMMER E50AR16P NSPP E50AR16P
CUTLER HAMMER E50AR16P NSPP E50AR16P
CUTLER HAMMER E50AR16P NSFP E50AR16P
CUTLER HAMMER E50-AR1 USPP E50AR1
CUTLER HAMMER E50AR1 IN A BOX
Cutler Hammer E50ANT3 Limit Switch With Roller
CUTLER HAMMER E50ANR16P NSFP E50ANR16P
CUTLER HAMMER E50ANR1 NSPP E50ANR1
CUTLER HAMMER E50ANR1 NSFP E50ANR1
CUTLER HAMMER E50ANL1 NSFP E50ANL1
CUTLER HAMMER E50-AM1 NSFP E50AM1
CUTLER HAMMER E50ALS3 NSFP E50ALS3
CUTLER HAMMER E50ALS3 NSFP E50ALS3
CUTLER HAMMER E50ALR1Y9 NSFP E50ALR1Y9
CUTLER HAMMER E50-ALR16PC NSPP E50ALR16PC
CUTLER HAMMER E50ALH1 NSFP E50ALH1
CUTLER HAMMER E50-AH1 USPP E50AH1
CUTLER HAMMER E50-AH1 NSFP E50AH1
CUTLER HAMMER E48M3KL3F110 NSPP E48M3KL3F110
CUTLER HAMMER E40IDEMO NSPP E40IDEMO
CUTLER HAMMER E34TB120H9X NSFP E34TB120H9X
CUTLER HAMMER E34TB120H3X NSFP E34TB120H3X
CUTLER HAMMER E34TB120H2X NSFP E34TB120H2X
CUTLER HAMMER E34PDB1F5 USPP E34PDB1F5
CUTLER HAMMER E34PDB1F5 POTENTIOMETER NIB
CUTLER HAMMER E34PDB1F10 NSFP E34PDB1F10
CUTLER HAMMER E34N53 NSFP E34N53
CUTLER HAMMER E34-N2 NSFP E34N2
CUTLER HAMMER E34GDB97LRD2A-?1X NSPP E34GDB97LRD2A1
CUTLER HAMMER E34GDB97LRD2A-?1X NSFP E34GDB97LRD2A1
CUTLER HAMMER E34GDB97LRD2A-?1X NSFP E34GDB97LRD2A1
CUTLER HAMMER E34GDB97LAD2-A?1X NSFP E34GDB97LAD2A1
CUTLER HAMMER E34GDB97LAD2-A?1X NSFP E34GDB97LAD2A1
CUTLER HAMMER E34GDB80M2-1X USPP E34GDB80M21X
CUTLER HAMMER E30-KP16 NSFP E30KP16
CUTLER HAMMER E30K-P14 USPP E30KP14
CUTLER HAMMER E30-KP12 NSFP E30KP12
CUTLER HAMMER E30-KP11 NSPP E30KP11
CUTLER HAMMER E30-KP11 NSFP E30KP11
CUTLER HAMMER E30KP10 NSFP E30KP10
Cutler Hammer E30JN Pushbutton Operator E30-JN
CUTLER HAMMER E30-JN NSFP E30JN
CUTLER HAMMER E30JK NSFP E30JK
CUTLER HAMMER E30JF USPP E30JF
CUTLER HAMMER E30-JA USPP E30JA