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. 202-3847
Mfr. Part No.GHG2610005R0005
BrandCEAG
$336.92
Each
units
- - NO/2NC - - Screw Polyamide 2 3 M20 3P - 112mm 102 x 84 x 112 mm
RS Stock No. 836-2747
Mfr. Part No.D4N1A62
BrandOmron
$30.91
Each
units
One Way Roller Arm Lever Yes NO/NC Slow IP67 Screw - 1 2 PG13.5 DPST D4N 92mm 31 x 31.5 x 92 mm
RS Stock No. 498-848
Mfr. Part No.3SE5232-1LC05
BrandSiemens
$45.31
Each
units
Plunger Yes 2NC/1NO Snap IP65 Screw Plastic 1 3 M20 x 1.5 - 3SE5 33mm 75.7 x 31 x 33 mm
RS Stock No. 766-1716
Mfr. Part No.XCSM3916L1
$118.23
Each
units
Rotary Lever Yes NO/2NC Snap - Cable Metal - 3 - 3P XCSM 34mm 94 x 30 x 34 mm
RS Stock No. 755-7907
Mfr. Part No.3SE5423-0CD20-1EA2
BrandSiemens
$89.33
Each
units
Roller Plunger Yes NO/NC Snap - Cable - - 2 5 x 0.75 mm² DPST 3SE5 16mm 50 x 40 x 16 mm
RS Stock No. 258-8170
Mfr. Part No.GSAC20A1B
BrandHoneywell
$247.60
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. 769-6276
Mfr. Part No.3SE5132-0CE05
BrandSiemens
$54.95
Each
units
Roller 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. 749-7580
Mfr. Part No.3SE5112-0CC02
BrandSiemens
$69.30
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. 749-7666
Mfr. Part No.3SE5232-0HK21
BrandSiemens
$43.90
Each
units
Twist Lever Yes NO/NC - IP65 Screw Plastic - - - DPST 3SE5 33mm 75.7 x 31 x 33 mm
RS Stock No. 293-6989
Mfr. Part No.GSAC06A1B
BrandHoneywell
$176.34
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. 746-7270
Mfr. Part No.D4N-4187
BrandOmron
$52.10
Each
units
Plastic Rod Yes NO/NC Snap - Screw - - 2 - DPST D4N 31.5mm 64 x 31 x 31.5 mm
RS Stock No. 836-2744
Mfr. Part No.D4N1A32
BrandOmron
$34.37
Each
units
Top Roller Plunger Yes NO/NC Slow IP67 Screw - 1 2 PG13.5 DPST D4N 83.6mm 31 x 31.5 x 83.6 mm
RS Stock No. 410-6893
Mfr. Part No.ENM2-SU1Z AHS-V
$66.79
Each
units
- - - - - - - - - - - - - -
RS Stock No. 836-2753
Mfr. Part No.D4N8131
BrandOmron
$35.97
Each
units
Top Plunger Yes NO/NC Snap IP67 Screw - 1 2 M20 DPST D4N 65mm 59 x 31.5 x 65 mm
RS Stock No. 755-7871
Mfr. Part No.3SE5413-0CD23-1EA2
BrandSiemens
$73.93
Each
units
Roller Plunger Yes NO/NC Snap - Cable - - 2 5 x 0.75 mm² DPST 3SE5 16.2mm 50 x 30 x 16.2 mm
RS Stock No. 746-7258
Mfr. Part No.D4N-412H
BrandOmron
$42.24
Each
units
Roller Lever Yes NO/NC Snap - Screw - - 2 M20 DPST D4N 48.2mm 64 x 31 x 48.2 mm
RS Stock No. 755-7865
Mfr. Part No.3SE5413-0CD20-1EA2
BrandSiemens
$73.93
Each
units
Roller Plunger Yes NO/NC Snap - Cable - - 2 5 x 0.75 mm² DPST 3SE5 16.2mm 50 x 30 x 16.2 mm
RS Stock No. 769-6273
Mfr. Part No.3SE5132-0CJ01
BrandSiemens
$58.75
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. 410-7111
Mfr. Part No.C2-U1Z
$27.25
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. 766-1624
Mfr. Part No.XCSD3910P20
$133.30
Each
units
Plunger Yes NO/2NC Snap - M20 Metal 1 3 M20 x 1.5 3P XCSD 35mm 89 x 34 x 35 mm
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