最简单的开关有二片名叫“触点”的金属，二触点接触时使电流形成回

 路，二触点不接触时电流开路。选用接点金属时需考虑其对抗腐蚀的程度，因为大多数金属氧化后会形成绝缘的氧化物，使接点无法正常工作。选用接点金属也需考虑其电导率、硬度、机械强度、成本及是否有毒等因素。有时会在接点上电镀抗腐蚀金属。一般会镀在接点的接触面，以避免因氧化物而影响其性能。有时接触面也会使用非金属的导电材料，如导电塑胶。开关中除了接点之外，也会有可动件使接点导通或不导通，开关可依可动件的不同为分为杠杆开关（Toggle switch）、按键开关、船型开关（Rocker switch）等，而可动件也可以是其他型式的机械连杆。
美国EATON 卡特拉汉莫全系列,主营:断路器 按钮开关 指示灯 接触器 传感器等产品
联系人：李小姐
电话：13671890267  分机021-60952290-815
QQ; 2851096297

型号             订货号
C306 32A relay C306DT3B
C306 75A relay C306GT3B
H2005B-3 H2005B-3
H2006B-3 H2006B-3
H2008B-3 H2008B-3
H2009B-3 H2009B-3
H2010B-3 H2010B-3
H2012B-3 H2012B-3
H2013B-3 H2013B-3
H2014B-3 H2014B-3
H2016B-3 H2016B-3

  型号

HMCPE003A0C ?
HMCPE007C0C ?
HMCPE015E0C ?
HMCPE030H1C ?
HMCPE050K2C ?
HMCPE070M2C ?
HMCPE100R3C ?
HMCPE100T3C ?
HMCPE003A0C
HMCPE003A0CA1
HMCPE100T3BBP08
HMCP007C0CA01
HMCPE050K2C
HMCPE070M2C
HMCPE070M2CBP08
HMCPE100R3C
HMCPE100R3CA1
HMCPE100R3CBP08
HMCP007C0CA04M01           
HMCP007C0CA05
HMCP007C0CA06
HMCP007C0CA06S02
HMCP007C0CA03
HMCP007C0CA04
HMCPE003A0CBP08
HMCPE007C0C
HMCPE007C0CA1
HMCPE007C0CBP08
HMCP007C0CA09
HMCP007C0CA10
HMCP007C0CA10M01
HMCP007C0CA10S22
HMCP007C0CA13
HMCP007C0CA14B03
HMCP007C0CBP10
HMCP007C0CA01A12
HMCP007C0CA01S21
HMCP007C0CA02
HMCP007C0CA02A06
HMCPE015E0C
HMCPE015E0CBP08
HMCPE015E0CIT
HMCPE015E0CITBPO8
HMCPE030H1C
HMCPE030H1CA1
HMCPE030H1CBP08
HMCPE050K2BBP08
HMCP007C0CB02
HMCP007C0CB04
HMCP003A0CM01A10
HMCP003A0CS01
HMCP003A0CS21
HMCP003A0C01
HMCP003A0C04
HMCP003A0C06
HMCP003A0D01
HMCP003A0D01S01
HMCP003A0L
HMCP003A0LCA05
HMCP003A0U62
HMCP003A0WD01
HMCP003A0WH09
HMCP003A0X
HMCP007COCA09S21
HMCP007COCA12
HMCP007COC03
HMCP007C0
HMCP007C0A01
HMCP007C0A02
HMCP007C0A04
HMCP007C0A05
HMCP007C0A09
HMCP007C0A10
HMCP007C0A11
HMCP007C0A11L07
HMCP007C0A11M01
HMCP007C0A12
HMCP007C0B02
HMCP007C0C
HMCPS150U4CA02
HMCP003A0              
HMCP003A0A01
HMCP003A0A02
HMCP003A0A05
HMCP003A0A06
HMCP003A0A09
HMCP003A0A11
HMCP003A0A11L07
HMCP003A0A11M01
HMCP003A0B01
HMCPS007C0CA04
HMCPS007C0CA12S06
HMCPS007C0CBP10
HMCPS007C0CH09
HMCPS015E0
HMCPS015E0A06L07Z01
HMCPS015E0C
HMCPS015E0CA01
HMCPS015E0CA02
HMCPS030H1
HMCPS030H1C
HMCPS030H1CA01
HMCPS030H1CA02
HMCPS030H1CA07A09
HMCPS030H1CA11
HMCPS05K2CA09
HMCPS050K2
HMCPS050K2A06L07S07
HMCPS050K2C
HMCPS050K2CA01
HMCPS050K2CA02
HMCPS050K2CA04
HMCPS050K2CA05
HMCPS100R3
HMCPS100R3A06L07S06
HMCPS100R3C
HMCPS100R3CA01     
HMCPS100R3CA02
HMCPS100R3CA05
HMCPS100R3CA10
HMCPS150T4
HMCPS150T4C
HMCPS150T4CA02
HMCPS150U4
HMCPS150U4C
HMCPE100T3C
HMCPJ250G5L
HMCPJ250J5L
HMCPJ250K5L
HMCPJ250L5L
HMCPJ250W5L
HMCPL600L6G
HMCPL600M6G
HMCPL600N6G
HMCPL600P6G
HMCPL600R6G
HMCPL600X6G
HMCPL600Y6G
HMCPS003A0
HMCPS003A0C
HMCPJ250A5L
HMCPJ250D5L
HMCPJ250F5L
HMCPS003A0CA02
HMCPS003A0CA04
HMCPS003A0CBP10
HMCPS007C0
HMCPS007C0A12
HMCPS007C0C
HMCPS007C0CA02
HMCFP550 
HMCGA3800F 
HMCG3800F 
HMCLDC3800WK 
HMCP003A0B02
HMCP003A0C
HMCP003A0CA01
HMCP003A0CA09B05
HMCP003A0CA10
HMCP003A0CA12
HMCP003A0CA12S06
HMCP003A0CA13
HMCP003A0CA14B03
HMCP003A0CBP10
HMCP003A0CB01
HMCP003A0CB02
HMCP003A0CB05
HMCP003A0CB06
HMCP003A0CH09
HMCP003A0CJ01
HMCP003A0CM01
HMCP003A0CM01A02
HMCP015E0CB05
HMCP003A0CA02
HMCP003A0CA03A05
HMCP003A0CA04
HMCP003A0CA04B06
HMCP003A0CA05
HMCP003A0CA06B02
HMCP015E0CB06
HMCP015E0CC02
HMCP015E0CC05
HMCP015E0CH09
HMCP015E0CS21
HMCP015E0B01
HMCP015E0B02
HMCP015E0B05
HMCP015E0B08
HMCP015E0C
HMCP015E0CA01
HMCP015E0CA02
HMCP015E0CA02BP10
HMCP015E0CA02S22  
HMCP015E0CU62
HMCP015E0CYC06D04
HMCP015E0C01
HMCP015E0C06
HMCP015E0D01
HMCP015E0H08
HMCP015E0H09
HMCP015E0L
HMCP015E0LCA02BP10
HMCP015E0LCA05
HMCP015E0S02
HMCP015E0W
HMCP015E0WH09
HMCP025D0
HMCP015E0A13       
HMCP015E0CA02U62
HMCP015E0CA04
HMCP015E0CA04M01
HMCP015E0CA05
HMCP015E0CA05M01
HMCP015E0CA06
HMCP015E0CA06B02
HMCP015E0CA08
HMCP015E0CA09
HMCP015E0CA09B05
HMCP015E0CA10
HMCP015E0CA10M01
HMCP015E0CA10S22
HMCP015E0CA11
HMCP015E0CA12
HMCP015E0CA12S06
HMCP015E0CA13
HMCP015E0CA13B01
HMCP015E0CBP10
HMCP015E0CB02
HMCP007C0CB05
HMCP007C0CB06
HMCP007C0CH09
HMCP007C0CJ01
HMCP007C0CS21
HMCP007C0CS22
HMCP007C0C01
HMCP007C0C02
HMCP007C0L
HMCP007C0LCA05
HMCP007C0S06
HMCP007C0S22
HMCP007C0WH09
HMCP007C0X
HMCP007C0YC06D04
HMCP007C0Z01
HMCP015EOCA09S21
HMCP015EOCA10B06
HMCP015EOC03
HMCP015E0
HMCP015E0A01
HMCP015E0A02
HMCP015E0A02B05
HMCP015E0A02M01
HMCP015E0A02M01Z01
HMCP015E0A02S22
HMCP015E0A04
HMCP015E0A05
HMCP015E0A06
HMCP015E0A09
HMCP015E0A10
HMCP015E0A11
HMCP015E0A11L07
HMCP015E0A11M01
HMCP015E0A12
HMCP030H1D01
HMCP030H1L
HMCP030H1M02
HMCP030H1S06
HMCP030H1U14
HMCP030H1U61
HMCP030H1U62
HMCP030H1W
HMCP050G2
HMCP050G2A02
HMCP050G2C
HMCP050G2CA02
HMCP050G2CA02M01
HMCP050G2CA04
HMCP050G2CA06
HMCP050G2SA12
HMCP050K2
HMCP050K2A01
HMCP050K2A02
HMCP050K2A02M01
HMCP050K2A03
HMCP050K2A04
HMCP050K2A05
HMCP050K2A06
HMCP050K2A06M02
HMCP030H1CA02BP10
HMCP030H1CA02S22
HMCP030H1CA02U62
HMCP030H1CA03A05
HMCP030H1CA04
HMCP030H1CA04M01
HMCP030H1CA05
HMCP030H1CA06
HMCP030H1CA06B02
HMCP030H1CA09
HMCP030H1CA09M01
HMCP030H1CA10
HMCP030H1CA11
HMCP030H1CA12
HMCP030H1CA12S06
HMCP030H1CA13
HMCP030H1CA13B01
HMCP030H1CBP10
HMCP030H1CB02S22
HMCP030H1CB02S26
HMCP030H1CB06
HMCP030H1CB10
HMCP030H1CC05
HMCP030H1CE03
HMCP030H1CH09
HMCP030H1CJ01
HMCP030H1CS22
HMCP030H1CU62
HMCP030H1C01
HMCP030H1C02
HMCP025D0A10
HMCP025D0B02
HMCP025D0B06
HMCP025D0C
HMCP025D0CA01
HMCP025D0CA02
HMCP025D0CA08
HMCP025D0CA10
HMCP025D0CS22
HMCP025D0I
HMCP025X0
HMCP025X0C
HMCP030H1
HMCP030H1A01
HMCP030H1A02
HMCP030H1A03
HMCP030H1A04
HMCP030H1A05
HMCP030H1A06
HMCP030H1A09
HMCP030H1A10
HMCP030H1A11
HMCP030H1A12
HMCP030H1A13
HMCP030H1A22
HMCP030H1B01
HMCP030H1C
HMCP030H1CA01
HMCP030H1CA01A05
HMCP030H1CA02
HMCP070M2CA06
HMCP070M2CA09
HMCP070M2CA10
HMCP070M2CA14
HMCP070M2U63
HMCP070M2YS02
HMCP070M2YS06
HMCP1LCA02
HMCP100K3
HMCP100K3A02
HMCP100K3A06
HMCP100K3C
HMCP100L3
HMCP100L3A08B04
HMCP100L3A10
HMCP100L3C
HMCP100L3CA02
HMCP100L3CA02S22
HMCP100L3CA04S21
HMCP100L3CA04S24
HMCP100L3CA08
HMCP100L3CA09
HMCP100L3CA10
HMCP100L3CA11S24
HMCP100L3CC02
HMCP050K2CH09
HMCP050K2CJ01
HMCP050K2CM01
HMCP050K2CS21
HMCP050K2CS22
HMCP050K2CU21
HMCP050K2CU61
HMCP050K2CU62
HMCP050K2CYC06D04
HMCP050K2C04
HMCP050K2S02Y01
HMCP050K2S06
HMCP050K2S06Y01
HMCP050K2S13
HMCP050K2U14
HMCP050K2U62
HMCP050K2W
HMCP050K2WD01U62
HMCP070J2
HMCP070J2A06
HMCP070J2C
HMCP070J2CA02
HMCP070J2CA04S24
HMCP070M2
HMCP070M2A02
HMCP070M2A05
HMCP070M2C
HMCP070M2CA01
HMCP070M2CA02
HMCP070M2CA04
HMCP050K2A09
HMCP050K2B01
HMCP050K2C
HMCP050K2CA01
HMCP050K2CA02
HMCP050K2CA02A06
HMCP050K2CA02B06
HMCP050K2CA02S22
HMCP050K2CA02U62
HMCP050K2CA04
HMCP050K2CA04M01
HMCP050K2CA05
HMCP050K2CA06
HMCP050K2CA06B02
HMCP050K2CA08
HMCP050K2CA09
HMCP050K2CA10
HMCP050K2CA10B06
HMCP050K2CA10B08
HMCP050K2CA10S22
HMCP050K2CA11
HMCP050K2CA12
HMCP050K2CA13
HMCP050K2CA13B01
HMCP050K2CA14
HMCP050K2CBP10
HMCP050K2CB02