Safety Limit Switches

Limit switches operate with the movement of machinery, opening or closing the circuit when movement is detected. Safety limit switches provide a level of risk reduction over regular limit switches, as they have a positive actuation structure, which means that if a fault occurs they will stop conducting the electrical load.

What are safety limit switches used for?

Safety limit switches are used in industrial settings to reduce the risk factor in the event of overcurrent or electrical faults. This can be useful in a wide range of applications, from heating and ventilation to the operation of heavy machinery, where normal limit switches might provide a risk if they continued to conduct electricity in the event of a fault.

Types of safety limit switches

Safety limit switches mainly differ by the type of actuator they have. This can be a hinge, roller, rod or push bolt, for example.They can also vary by the number of contacts and cable entries that they have.


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Description Price Actuator Type Actuator Included Normal State Configuration Action Type IP Rating Connection Type Housing Material Number of Cable Entries Number of Contacts Size of Cable Entries Pole and Throw Configuration Series Depth Dimensions
RS庫存編號 202-3847
製造零件編號GHG2610005R0005
BrandCEAG
HK$2,136.50
單位
- - NO/2NC - - Screw Polyamide 2 3 M20 3P - 112mm 102 x 84 x 112 mm
RS庫存編號 410-6900
製造零件編號SK-A2Z M
HK$241.35
單位
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RS庫存編號 410-6922
製造零件編號SKC-A1Z M
HK$212.70
單位
- - - - - - - - - - - - - -
RS庫存編號 410-6916
製造零件編號SK-U1Z M
HK$214.00
單位
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RS庫存編號 410-7032
製造零件編號ENM2-SU1Z IW
HK$280.37
單位
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RS庫存編號 410-6893
製造零件編號ENM2-SU1Z AHS-V
HK$437.46
單位
- - - - - - - - - - - - - -
RS庫存編號 749-7640
製造零件編號3SE5162-0CE01
BrandSiemens
HK$813.77
單位
Roller Lever Yes 2NO/2NC - IP66, IP67 Screw Metal - - - 4PST 3SE5 37mm 107.7 x 56 x 37 mm
RS庫存編號 410-7048
製造零件編號ENM2-SU1Z RIW
HK$289.05
單位
- - - - - - - - - - - - - -
RS庫存編號 274-7981
製造零件編號GHG2622301R0007
BrandCEAG
HK$2,789.36
單位
- - NO/NC - - Screw Polyamide 2 2 M20 DP - 112mm 102 x 84 x 112 mm
RS庫存編號 749-7669
製造零件編號3SE5232-0HE10
BrandSiemens
HK$225.38
單位
Roller Lever Yes NO/NC - IP65 Screw Plastic - - - DPST 3SE5 33mm 75.7 x 31 x 33 mm
RS庫存編號 749-7650
製造零件編號3SE5232-0HD03
BrandSiemens
HK$196.64
單位
Roller Plunger Yes NO/NC - IP65 Screw Plastic - - - DPST 3SE5 33mm 75.7 x 31 x 33 mm
RS庫存編號 749-7599
製造零件編號3SE5112-0CH50
BrandSiemens
HK$402.46
單位
Twist Lever Yes NO/NC - IP66, IP67 Screw Metal - - - DPST 3SE5 37.3mm 85.7 x 40.5 x 37.3 mm
RS庫存編號 749-7583
製造零件編號3SE5112-0CD02
BrandSiemens
HK$395.50
單位
Plunger Yes NO/NC - IP66, IP67 Screw Metal - - - DPST 3SE5 37.3mm 85.7 x 40.5 x 37.3 mm
RS庫存編號 621-1543
製造零件編號D4N-1132
BrandOmron
HK$187.23
單位
Roller Plunger Yes NO/NC Snap IP67 Screw - - 2 - SPDT D4N 31.5mm 83.6 x 31 x 31.5 mm
RS庫存編號 768-6538
製造零件編號3SE5162-0CA00
BrandSiemens
HK$610.00
單位
Round Plunger - 2NO/2NC Snap - Screw Metal 3 4 M20 x 1.5 - 3SE5 100mm 56 x 37 x 100 mm
RS庫存編號 757-9159
製造零件編號D4B4116N
BrandOmron
HK$486.43
單位
Roller Lever Yes NO/NC Snap - Screw Metal 1 2 M20 DPST D4B-N 43mm 99.5 x 40 x 43 mm
RS庫存編號 746-7255
製造零件編號D4N-4132
BrandOmron
HK$211.39
單位
Roller Plunger Yes NO/NC Snap - Screw - - 2 M20 DPST D4N 31.5mm 64 x 31 x 31.5 mm
RS庫存編號 768-6529
製造零件編號3SE5162-0BA00
BrandSiemens
HK$620.00
單位
Round Plunger - 2NO/2NC Slow - Screw Metal 3 4 M20 x 1.5 - 3SE5 100mm 56 x 37 x 100 mm
RS庫存編號 768-6456
製造零件編號3SE5214-0LC05-1AE1
BrandSiemens
HK$325.00
單位
Round Plunger Yes 2NC Snap - Screw Metal 1 2 M20 x 1.5 - 3SE5 68mm 31 x 33 x 68 mm
RS庫存編號 698-8779
製造零件編號EX-ZS 335-11Z-3G/D
BrandSchmersal
HK$643.90
單位
Plunger Yes NO/NC Snap - Screw Metal 1 2 M20 x 1.5 DP EX-ZS 335 38mm 66.5 x 40.5 x 38 mm