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. 769-6241
Mfr. Part No.3SE5162-0CH01
BrandSiemens
PHP6,118.11
Each
units
Twist Lever Yes 2NO/2NC Snap - Screw Metal 3 4 M20 x 1.5 - 3SE5 100mm 56 x 37 x 100 mm
RS Stock No. 755-7875
Mfr. Part No.3SE5413-0CN20-1EA2
BrandSiemens
PHP2,891.75
Each
units
Twist Lever 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. 749-7669
Mfr. Part No.3SE5232-0HE10
BrandSiemens
PHP1,591.39
Each
units
Roller Lever Yes NO/NC - IP65 Screw Plastic - - - DPST 3SE5 33mm 75.7 x 31 x 33 mm
RS Stock No. 749-7631
Mfr. Part No.3SE5122-0CE01
BrandSiemens
PHP2,652.84
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. 749-7583
Mfr. Part No.3SE5112-0CD02
BrandSiemens
PHP3,482.80
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. 621-1559
Mfr. Part No.D4N-1162
BrandOmron
PHP2,161.10
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. 746-7242
Mfr. Part No.D4N-4120
BrandOmron
PHP2,498.18
Each
units
Roller Lever Yes NO/NC Snap - Screw - - 2 M20 DPST D4N 47mm 64 x 31 x 47 mm
RS Stock No. 621-1543
Mfr. Part No.D4N-1132
BrandOmron
PHP2,030.90
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. 757-9159
Mfr. Part No.D4B4116N
BrandOmron
PHP4,636.90
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. 621-1515
Mfr. Part No.D4N-1120
BrandOmron
PHP2,498.18
Each
units
Roller Lever Yes NO/NC Snap IP67 Screw - - 2 - SPDT D4N 47mm 73 x 31 x 47 mm
RS Stock No. 746-7255
Mfr. Part No.D4N-4132
BrandOmron
PHP1,406.96
Each
units
Roller Plunger Yes NO/NC Snap - Screw - - 2 M20 DPST D4N 31.5mm 64 x 31 x 31.5 mm
RS Stock No. 749-7640
Mfr. Part No.3SE5162-0CE01
BrandSiemens
PHP5,735.25
Each
units
Roller Lever Yes 2NO/2NC - IP66, IP67 Screw Metal - - - 4PST 3SE5 37mm 107.7 x 56 x 37 mm
RS Stock No. 410-6994
Mfr. Part No.C2-SU1Z ST.
PHP1,040.44
Each
units
Plunger 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. 258-8265
Mfr. Part No.GSAC21D
BrandHoneywell
PHP8,545.28
Each
units
Roller Lever Yes 2NC/2NO Snap IP67 Screw Metal - 4 - DPDT GSS 42mm 141 x 42 x 42 mm
RS Stock No. 746-7264
Mfr. Part No.D4N-4162
BrandOmron
PHP1,934.30
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. 621-1521
Mfr. Part No.D4N-112G
BrandOmron
PHP2,617.40
Each
units
Roller Lever Yes NO/NC Snap IP67 Screw - - 2 - SPDT D4N 45mm 73 x 31 x 45 mm
RS Stock No. 749-7675
Mfr. Part No.3SE5232-0HK60
BrandSiemens
PHP2,017.06
Each
units
Twist Lever Yes NO/NC - IP65 Screw Plastic - - - DPST 3SE5 33mm 75.7 x 31 x 33 mm
RS Stock No. 749-7565
Mfr. Part No.3SE5112-0BE01
BrandSiemens
PHP2,724.44
Each
units
Roller Lever Yes NO/NC - IP66, IP67 Screw Metal - - - DPST 3SE5 37.3mm 85.7 x 40.5 x 37.3 mm
RS Stock No. 258-8120
Mfr. Part No.GSAC04A1B
BrandHoneywell
PHP6,804.48
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. 749-7593
Mfr. Part No.3SE5112-0CR01
BrandSiemens
PHP2,633.39
Each
units
Spring Rod Yes NO/NC - IP66, IP67 Screw Metal - - - DPST 3SE5 37.3mm 85.7 x 40.5 x 37.3 mm
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