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. 498-965
Mfr. Part No.3SE5232-0CC05
BrandSiemens
kr 226,32
Each
Units
Plunger Yes NO/NC Snap IP65 Screw Plastic 1 2 M20 x 1.5 - 3SE5 33mm 75.7 x 31 x 33 mm
RS Stock No. 749-7666
Mfr. Part No.3SE5232-0HK21
BrandSiemens
kr 341,97
Each
Units
Twist Lever Yes NO/NC - IP65 Screw Plastic - - - DPST 3SE5 33mm 75.7 x 31 x 33 mm
RS Stock No. 227-977
Mfr. Part No.3SE5232-0HC05
BrandSiemens
kr 226,32
Each
Units
Plunger - NO/NC - IP65 Screw Plastic - - - - 3SE5 33mm 75.7 x 31 x 33 mm
RS Stock No. 757-9159
Mfr. Part No.D4B4116N
BrandOmron
kr 529,50
Each
Units
Roller Lever Yes NO/NC Snap - Screw Metal 1 2 M20 DPST D4B-N 43mm 99.5 x 40 x 43 mm
RS Stock No. 749-7599
Mfr. Part No.3SE5112-0CH50
BrandSiemens
kr 657,02
Each
Units
Twist Lever Yes NO/NC - IP66, IP67 Screw Metal - - - DPST 3SE5 37.3mm 85.7 x 40.5 x 37.3 mm
RS Stock No. 447-4641
Mfr. Part No.XCSM3910L5
kr 689,93
Each
Units
Plunger Yes NO/2NC Snap IP66, IP67, IP68 Cable Metal - 3 - - XCSM 16mm 60 x 30 x 16 mm
RS Stock No. 621-1521
Mfr. Part No.D4N-112G
BrandOmron
kr 226,77
Each
Units
Roller Lever Yes NO/NC Snap IP67 Screw - - 2 - SPDT D4N 45mm 73 x 31 x 45 mm
RS Stock No. 746-7264
Mfr. Part No.D4N-4162
BrandOmron
kr 199,84
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. 749-7583
Mfr. Part No.3SE5112-0CD02
BrandSiemens
kr 645,06
Each
Units
Plunger Yes NO/NC - IP66, IP67 Screw Metal - - - DPST 3SE5 37.3mm 85.7 x 40.5 x 37.3 mm
RS Stock No. 757-9156
Mfr. Part No.D4B-4171N
BrandOmron
kr 467,30
Each
Units
Roller Plunger Yes NO/NC Snap - Screw Metal 1 2 M20 DPST D4B-N 43mm 97 x 40 x 43 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. 766-1719
Mfr. Part No.XCSM3910L1
kr 482,69
Each
Units
Plunger Yes NO/2NC Snap - Cable Metal - 3 - 3P XCSM 16mm 60 x 30 x 16 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. 410-7111
Mfr. Part No.C2-U1Z
kr 145,49
Each
Units
Radius 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. 861-4648
Mfr. Part No.D4N-2187
BrandOmron
kr 267,67
Each
Units
Rod Yes NO/NC Snap IP67 M20 - - 2 - DPST D4N 170mm 31 x 31.5 x 170 mm
RS Stock No. 621-1559
Mfr. Part No.D4N-1162
BrandOmron
kr 199,84
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. 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. 746-7242
Mfr. Part No.D4N-4120
BrandOmron
kr 189,20
Each
Units
Roller Lever Yes NO/NC Snap - Screw - - 2 M20 DPST D4N 47mm 64 x 31 x 47 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. 258-8158
Mfr. Part No.GSAC04C
BrandHoneywell
kr 750,09
Each
Units
Plunger Yes NO/NC Snap - Screw Metal - 2 M20 x 1.5 DP GSS 42mm 141 x 42 x 42 mm
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