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.


...
Read more Read less

Filters

Viewing 81 - 100 of 281 products
Results per page
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. 410-7357
Mfr. Part No.I88-U1Z W
HK$156.25
Each
units
Radius 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. 768-6336
Mfr. Part No.3SE5132-0CA00
BrandSiemens
HK$157.00
Each
units
Round Plunger - NO/NC Snap - Screw Plastic 1 2 M20 x 1.5 - 3SE5 78mm 40.5 x 37.3 x 78 mm
RS Stock No. 749-7622
Mfr. Part No.3SE5122-0CD02
BrandSiemens
HK$437.94
Each
units
Roller Plunger Yes NO/NC - IP66, IP67 Screw Metal - - - DPST 3SE5 37.8mm 85.7 x 56 x 37.8 mm
RS Stock No. 133-0065
Mfr. Part No.XCSM3915L5
HK$597.00
Each
units
Rotary Lever Yes NO/2NC Snap IP66, IP67, IP68 Cable Metal 1 3 - 3P XCSM 94mm 30 x 32.4 x 94 mm
RS Stock No. 766-1719
Mfr. Part No.XCSM3910L1
HK$465.50
Each
units
Plunger Yes NO/2NC Snap - Cable Metal - 3 - 3P XCSM 16mm 60 x 30 x 16 mm
RS Stock No. 768-6355
Mfr. Part No.3SE5242-0LC05
BrandSiemens
HK$191.50
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. 746-7261
Mfr. Part No.D4N-4180
BrandOmron
HK$276.97
Each
units
Cat's Whisker Yes NO/NC Snap - Screw - - 2 - DPST D4N 31.5mm 64 x 31 x 31.5 mm
RS Stock No. 766-1615
Mfr. Part No.XCSD3902P20
HK$351.50
Each
units
Roller Plunger Yes NO/2NC Snap - Cable Metal 1 3 M20 x 1.5 3P XCSD 35mm 100 x 34 x 35 mm
RS Stock No. 755-7871
Mfr. Part No.3SE5413-0CD23-1EA2
BrandSiemens
HK$390.50
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. 133-0063
Mfr. Part No.XCSM3715L1
HK$522.87
Each
units
Rotary Lever Yes NO/2NC Slow IP66, IP67, IP68 Cable Metal 1 3 - 3P XCSM 94mm 30 x 32.4 x 94 mm
RS Stock No. 755-7865
Mfr. Part No.3SE5413-0CD20-1EA2
BrandSiemens
HK$375.80
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. 768-6434
Mfr. Part No.3SE5212-0MC05
BrandSiemens
HK$215.00
Each
units
Round Plunger Yes NO/2NC Slow - Screw Metal 1 3 M20 x 1.5 - 3SE5 68mm 31 x 33 x 68 mm
RS Stock No. 768-6440
Mfr. Part No.3SE5214-0BC05-1AC5
BrandSiemens
HK$320.00
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. 498-965
Mfr. Part No.3SE5232-0CC05
BrandSiemens
HK$125.00
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. 755-7890
Mfr. Part No.3SE5423-0CC20-1EB1
BrandSiemens
HK$474.75
Each
units
Round Plunger Yes NO/NC Snap - M12 - - 2 - DPST 3SE5 16mm 50 x 40 x 16 mm
RS Stock No. 228-087
Mfr. Part No.3SE5242-0HC05
BrandSiemens
HK$175.00
Each
units
Plunger - NO/NC - IP66, IP67 Screw Plastic - - - - 3SE5 33mm 60.7 x 55.5 x 33 mm
RS Stock No. 768-6257
Mfr. Part No.3SE5234-0BC05-1AC4
BrandSiemens
HK$260.00
Each
units
Round Plunger Yes NO/NC Slow - Screw Plastic 1 2 M20 x 1.5 - 3SE5 68mm 31 x 33 x 68 mm
RS Stock No. 836-2747
Mfr. Part No.D4N1A62
BrandOmron
HK$237.93
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. 768-6415
Mfr. Part No.3SE5232-0CC05-1AJ0
BrandSiemens
HK$247.77
Each
units
Round Plunger Yes NO/NC Snap - Screw Plastic 1 2 M20 x 1.5 - 3SE5 68mm 31 x 33 x 68 mm
RS Stock No. 447-4641
Mfr. Part No.XCSM3910L5
HK$630.00
Each
units
Plunger Yes NO/2NC Snap IP66, IP67, IP68 Cable Metal - 3 - - XCSM 16mm 60 x 30 x 16 mm