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 Stock No. 311-0273
Mfr. Part No.GSAC40C
BrandHoneywell
€120.77
Each
units
Plunger Yes 4NC Slow - Screw Metal - 4 M20 x 1.5 4P GSS 42mm 141 x 42 x 42 mm
RS Stock No. 410-6972
Mfr. Part No.C2-SU1Z R
€17.39
Each
units
Roller Tappet Yes NO/NC Snap IP20 Screw Fibreglass 1 2 8.5 x 3.5 mm - C2 21mm 44 x 26 x 21 mm
RS Stock No. 410-6988
Mfr. Part No.C2-U1Z R
€16.25
Each
units
Roller Tappet Yes NO/NC Slow IP20 Screw Fibreglass 1 2 8.5 x 3.5 mm - C2 21mm 44 x 26 x 21 mm
RS Stock No. 769-6740
Mfr. Part No.3SE5250-0BC05
BrandSiemens
€20.20
Each
units
Plunger Yes NO/NC Slow - Screw Plastic - 2 - - 3SE5 48.5mm 30 x 20 x 48.5 mm
RS Stock No. 749-7631
Mfr. Part No.3SE5122-0CE01
BrandSiemens
€44.32
Each
units
Roller Lever Yes NO/NC - IP66, IP67 Screw Metal - - - DPST 3SE5 37.8mm 85.7 x 56 x 37.8 mm
RS Stock No. 749-7653
Mfr. Part No.3SE5232-0BD03
BrandSiemens
€24.35
Each
units
Roller Plunger Yes NO/NC - IP65 Screw Plastic - - - DPST 3SE5 33mm 75.7 x 31 x 33 mm
RS Stock No. 133-0061
Mfr. Part No.XCSM4102L5
€76.78
Each
units
Roller Plunger Yes 2NC/2NO Snap IP66, IP67, IP68 Cable Metal 1 4 - 4P XCSM 70.4mm 30 x 16 x 70.4 mm
RS Stock No. 136-3204
Mfr. Part No.6089167052
€41.71
Each
units
Plunger, Roller Yes NO/NC Snap IP67 Cable Polymeric 1 2 - SPST I49 70mm 30 x 16 x 70 mm
RS Stock No. 228-071
Mfr. Part No.3SE5242-0BC05
BrandSiemens
€24.27
Each
units
Plunger - NO/NC - IP66, IP67 Screw Plastic - - - - 3SE5 33mm 60.7 x 55.5 x 33 mm
New
RS Stock No. 195-1770
Mfr. Part No.XCSM4116L5
€73.34
Each
units
Lever Yes 2NC/2NO Snap IP66, IP67, IP68 Pre-Cabled Zamak 1 9 9 x 0.34 mm² 4P XCSM 94mm 30 x 34 x 94 mm
RS Stock No. 768-6367
Mfr. Part No.3SE5242-1LC05
BrandSiemens
€38.57
Each
units
Round Plunger Yes NO/2NC Snap - Screw Plastic 2 3 M20 x 1.5 - 3SE5 53mm 50 x 33 x 53 mm
RS Stock No. 814-7961
Mfr. Part No.XCSM3710L2
€99.06
Each
units
Plunger Yes NO/2NC Slow IP66, IP67, IP68 Pre-Cabled Metal 1 3 7 x 0.5 mm² 3P XCSM 60mm 30 x 16 x 60 mm
New
RS Stock No. 195-1772
Mfr. Part No.XCSTE5512
€239.01
Each
units
- - 1NC/1NO - IP67 Terminal Polyamide 1 1 M16 x 1.5 mm 2P XCST 94mm 110 x 33 x 94 mm
RS Stock No. 768-6428
Mfr. Part No.3SE5212-0BC05
BrandSiemens
€24.25
Each
units
Round Plunger Yes NO/NC Slow - Screw Metal 1 2 M20 x 1.5 - 3SE5 68mm 31 x 33 x 68 mm
RS Stock No. 302-0057
Mfr. Part No.XCLJ761H29
€66.32
Each
units
Plunger Yes 2NC Slow IP66 Screw Metal 1 2 20 mm - XCL-J 40mm 107 x 44 x 40 mm
RS Stock No. 136-3200
Mfr. Part No.6089102049
€29.70
Each
units
Plunger Yes NO/NC Slow IP67 Cable Polymeric 1 2 - SPST I49 60mm 30 x 16 x 60 mm
RS Stock No. 768-6373
Mfr. Part No.3SE5242-0PC05
BrandSiemens
€26.03
Each
units
Round Plunger Yes 2NO/NC Slow - Screw Plastic 2 3 M20 x 1.5 - 3SE5 53mm 50 x 33 x 53 mm
RS Stock No. 749-7634
Mfr. Part No.3SE5122-0CF01
BrandSiemens
€44.32
Each
units
Roller Lever Yes NO/NC - IP66, IP67 Screw Metal - - - DPST 3SE5 37.8mm 85.7 x 56 x 37.8 mm
RS Stock No. 293-6989
Mfr. Part No.GSAC06A1B
BrandHoneywell
€100.70
Each
units
Roller, Rotary Yes 2NC Snap - Screw Metal - 2 M20 x 1.5 DP GSS 55.9mm 145.8 x 42 x 55.9 mm
RS Stock No. 836-2731
Mfr. Part No.D4B4A11N
BrandOmron
€51.88
Each
units
Roller Lever Yes 2NC Slow IP67 Screw Metal 1 - M20 - D4B 131.3mm 40 x 62 x 131.3 mm
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