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. 258-8209
Mfr. Part No.GSAC20C
BrandHoneywell
£103.65
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. 258-8091
Mfr. Part No.GSAC01C
BrandHoneywell
£58.87
Each
Units
Plunger Yes NO/NC Snap - Screw Metal - 2 M20 x 1.5 DP GSS 42mm 141 x 42 x 42 mm
RS Stock No. 258-8215
Mfr. Part No.GSAC20D
BrandHoneywell
£98.81
Each
Units
Roller Arm Yes 2NO/2NC Snap - Screw Metal - 4 M20 x 1.5 4P GSS 42mm 141 x 42 x 42 mm
RS Stock No. 258-8265
Mfr. Part No.GSAC21D
BrandHoneywell
£111.58
Each
Units
Roller Lever Yes 2NC/2NO Snap IP67 Screw Metal - 4 - DPDT GSS 42mm 141 x 42 x 42 mm
RS Stock No. 258-8170
Mfr. Part No.GSAC20A1B
BrandHoneywell
£109.38
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. 258-8085
Mfr. Part No.GSAC01B
BrandHoneywell
£58.87
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. 258-8063
Mfr. Part No.GSAC01A1B
BrandHoneywell
£80.62
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. 258-8221
Mfr. Part No.GSAC21A1B
BrandHoneywell
£107.74
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. 311-0273
Mfr. Part No.GSAC40C
BrandHoneywell
£78.83
Each
Units
Plunger Yes 4NC Slow - Screw Metal - 4 M20 x 1.5 4P GSS 42mm 141 x 42 x 42 mm
RS Stock No. 258-8158
Mfr. Part No.GSAC04C
BrandHoneywell
£88.50
Each
Units
Plunger Yes NO/NC Snap - Screw Metal - 2 M20 x 1.5 DP GSS 42mm 141 x 42 x 42 mm
RS Stock No. 293-7011
Mfr. Part No.GSAC06C
BrandHoneywell
£103.89
Each
Units
Plunger Yes NO/NC Snap - Screw Metal - 2 M20 x 1.5 DP GSS 42mm 141 x 42 x 42 mm
RS Stock No. 293-6989
Mfr. Part No.GSAC06A1B
BrandHoneywell
£85.40
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. 258-8108
Mfr. Part No.GSAC01D
BrandHoneywell
£75.18
Each
Units
Plunger Yes NO/NC Snap - Screw Metal - 2 M20 x 1.5 DP GSS 42mm 141 x 42 x 42 mm
RS Stock No. 258-8192
Mfr. Part No.GSAC20B
BrandHoneywell
£103.65
Each
Units
Plunger Yes 2NO/2NC Snap - Screw Metal - 4 - 4P GSS 42mm 145.8 x 42 x 42 mm
RS Stock No. 258-8164
Mfr. Part No.GSAC04D
BrandHoneywell
£93.65
Each
Units
Roller Arm Yes NO/NC Slow - Screw Metal - 2 M20 x 1.5 DP GSS 42mm 141 x 42 x 42 mm
RS Stock No. 311-0330
Mfr. Part No.GSAC46C
BrandHoneywell
£62.44
Each
Units
Plunger Yes 4NC Slow - Screw Metal - 4 M20 x 1.5 4P GSS 42mm 141 x 42 x 42 mm
RS Stock No. 258-8259
Mfr. Part No.GSAC21C
BrandHoneywell
£107.77
Each
Units
Plunger Yes NO/NC Snap - Screw Metal - 2 M20 x 1.5 DP GSS 42mm 141 x 42 x 42 mm
RS Stock No. 311-0245
Mfr. Part No.GSAC40A1B
BrandHoneywell
£121.85
Each
Units
Roller, Rotary Yes 4NC Slow - Screw Metal - 4 M20 x 1.5 4P GSS 55.9mm 145.8 x 42 x 55.9 mm
RS Stock No. 258-8120
Mfr. Part No.GSAC04A1B
BrandHoneywell
£88.47
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. 258-8142
Mfr. Part No.GSAC04B
BrandHoneywell
£79.51
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