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. 861-4648
Mfr. Part No.D4N-2187
BrandOmron
kr 316,64
Each
Units
Rod Yes NO/NC Snap IP67 M20 - - 2 - DPST D4N 170mm 31 x 31.5 x 170 mm
RS Stock No. 746-7242
Mfr. Part No.D4N-4120
BrandOmron
kr 195,90
Each
Units
Roller Lever Yes NO/NC Snap - Screw - - 2 M20 DPST D4N 47mm 64 x 31 x 47 mm
RS Stock No. 749-7638
Mfr. Part No.3SE5122-0CH80
BrandSiemens
kr 698,90
Each
Units
Rod Yes NO/NC - IP65, IP67 Screw Metal - - - DPST 3SE5 37.8mm 85.7 x 56 x 37.8 mm
RS Stock No. 258-8221
Mfr. Part No.GSAC21A1B
BrandHoneywell
kr 904,19
Each
Units
Roller, Rotary Yes NO/NC Snap - Screw Metal - 2 M20 x 1.5 DP GSS 55.9mm 145.8 x 42 x 55.9 mm
RS Stock No. 258-8085
Mfr. Part No.GSAC01B
BrandHoneywell
kr 667,39
Each
Units
Plunger Yes NO/NC Snap - Screw Metal - 2 M20 x 1.5 DP GSS 55.9mm 145.8 x 42 x 55.9 mm
RS Stock No. 766-1719
Mfr. Part No.XCSM3910L1
kr 716,84
Each
Units
Plunger Yes NO/2NC Snap - Cable Metal - 3 - 3P XCSM 16mm 60 x 30 x 16 mm
RS Stock No. 621-1559
Mfr. Part No.D4N-1162
BrandOmron
kr 210,50
Each
Units
Roller Plunger Yes NO/NC Snap IP67 Screw - - 2 - SPDT D4N 31.5mm 83.6 x 31 x 31.5 mm
RS Stock No. 746-7267
Mfr. Part No.D4N-4172
BrandOmron
kr 210,50
Each
Units
Roller Lever Yes NO/NC Snap - Screw - - 2 M20 DPST D4N 31.5mm 64 x 31 x 31.5 mm
RS Stock No. 749-7669
Mfr. Part No.3SE5232-0HE10
BrandSiemens
kr 332,00
Each
Units
Roller Lever Yes NO/NC - IP65 Screw Plastic - - - DPST 3SE5 33mm 75.7 x 31 x 33 mm
RS Stock No. 258-8209
Mfr. Part No.GSAC20C
BrandHoneywell
kr 1 123,44
Each
Units
Plunger Yes 2NO/2NC Snap - Screw Metal - 4 M20 x 1.5 4P GSS 42mm 141 x 42 x 42 mm
RS Stock No. 768-6474
Mfr. Part No.3SE5112-0CA00
BrandSiemens
kr 352,94
Each
Units
Round Plunger - NO/NC Snap - Screw Metal 1 2 M20 x 1.5 - 3SE5 78mm 40.5 x 37.3 x 78 mm
RS Stock No. 410-7420
Mfr. Part No.I88-U1Z AH
kr 343,60
Each
Units
Spindle Yes NO/NC Slow IP65 Screw Fibreglass 1 2 M20 x 1.5 - I88 SU/U 30.5mm 62 x 22 x 30.5 mm
RS Stock No. 769-6273
Mfr. Part No.3SE5132-0CJ01
BrandSiemens
kr 457,62
Each
Units
Twist Lever Yes NO/NC Snap - Screw Plastic 1 2 M20 x 1.5 - 3SE5 78mm 40.5 x 37.3 x 78 mm
RS Stock No. 202-3847
Mfr. Part No.GHG2610005R0005
BrandCEAG
kr 2 825,73
Each
Units
- - NO/2NC - - Screw Polyamide 2 3 M20 3P - 112mm 102 x 84 x 112 mm
RS Stock No. 479-3043
Mfr. Part No.XCSM3902L5
kr 961,11
Each
Units
Roller Plunger Yes NO/2NC Snap IP67, IP68 Cable Metal - 3 - - XCSM 16mm 70 x 30 x 16 mm
RS Stock No. 258-8170
Mfr. Part No.GSAC20A1B
BrandHoneywell
kr 1 199,97
Each
Units
Rotary Yes 2NO/2NC Snap - Screw Metal - 4 M20 x 1.5 4P GSS 55.9mm 145.8 x 42 x 55.9 mm
RS Stock No. 769-6740
Mfr. Part No.3SE5250-0BC05
BrandSiemens
kr 252,24
Each
Units
Plunger Yes NO/NC Slow - Screw Plastic - 2 - - 3SE5 48.5mm 30 x 20 x 48.5 mm
RS Stock No. 621-1515
Mfr. Part No.D4N-1120
BrandOmron
kr 192,51
Each
Units
Roller Lever Yes NO/NC Snap IP67 Screw - - 2 - SPDT D4N 47mm 73 x 31 x 47 mm
RS Stock No. 746-7233
Mfr. Part No.D4N-1A2G
BrandOmron
kr 251,16
Each
Units
Roller Lever Yes NO/NC Slow - Screw - - 2 PG13.5 DPST D4N 45mm 64 x 31 x 45 mm
RS Stock No. 814-7961
Mfr. Part No.XCSM3710L2
kr 775,67
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
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