Safety-Rated Interlock Switches

Safety rated interlock switches are safeguarding measures designed to improve safety in situations where guards or gates are used around hazardous machinery or equipment.

What are safety rated interlock switches used for?

In industrial situations, safety rated interlock switches prevent or permit the use of machinery, depending on safety conditions. They allow current to pass to the machine when it is safe to operate, for example when the machine's guard is closed. And they cut off the power if there's a potential hazard, such as a guard being opened. When a dangerous piece of equipment such as a metalworking machine is in operation, safety rated interlock switch might be used to ensure safety gates remain closed, excluding workers from hazardous areas.

Types of safety rated interlock switches

Safety rated interlock switches vary according to their lock type, maximum current and voltage, as well as their housing material. Guard-locking switches prevent access to machine parts that may still be in motion, even when the power has been cut. Hinge switches will close protective gates and guards in unsafe conditions.


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Description Price Connection Type Lock Style Normal State Configuration Housing Material Maximum AC Voltage Maximum DC Voltage Safety Contacts Range Actuator Included Lock Type Number of Head Directions Series Auxiliary Contacts Depth
RS Stock No. 263-3624
Mfr. Part No.XCSA702
HK$456.74
Each
units
Screw Key 2NC/1NO Zamak 240V 250V 2NC/1NO Preventa - - 8 XCSA - 44mm
RS Stock No. 666-4938
Mfr. Part No.XCSA502EX
HK$1,943.15
Each
units
Screw Key 1NC/2NO Zamak 240V 250V 1NC/2NO Preventa - - 8 XCSA - 44mm
RS Stock No. 279-6393
Mfr. Part No.XCSTA591
HK$307.00
Each
units
Screw Key 1NC/2NO Glass Fibre Reinforced PA 240V 250V 1NC/2NO Preventa - - 8 XCSTA - 30mm
RS Stock No. 700-4302
Mfr. Part No.XCSPA793
HK$300.64
Each
units
Screw Clamp Key 2NC Glass Fibre Reinforced PA 240V 250V 2NC Preventa - - 4 XCSPA - 30mm
RS Stock No. 263-3595
Mfr. Part No.XCSA502
HK$604.97
Each
units
Screw Key 1NC/2NO Zamak 240V 250V 1NC/2NO Preventa - - 8 XCSA - 44mm
RS Stock No. 263-3602
Mfr. Part No.XCSA512
HK$808.00
Each
units
Screw Key 1NC/2NO Zamak 240V 250V 1NC/2NO Preventa - - 8 XCSA - 44mm
RS Stock No. 766-1605
Mfr. Part No.XCSB702
HK$1,070.00
Each
units
- - NO/2NC Zamak 240V 250V NO/2NC Preventa Yes - - XCSB - 44mm
RS Stock No. 263-3668
Mfr. Part No.XCSC512
HK$1,190.00
Each
units
Screw Key 1NC/2NO Zamak 240V 250V 1NC/2NO Preventa - - 8 XCSC - 44mm
RS Stock No. 814-6999
Mfr. Part No.XCSB703
HK$1,612.52
Each
units
Cable Key 2NC/1NO Zamak 240V 250V - Preventa Yes - 8 XCSB - 44mm
RS Stock No. 700-4292
Mfr. Part No.XCSPA593
HK$300.64
Each
units
Screw Clamp Key NO/NC Glass Fibre Reinforced PA 240V 250V NO/NC Preventa - - 4 XCSPA - 30mm
RS Stock No. 133-0083
Mfr. Part No.XCSA802
HK$716.96
Each
units
M20 Key 3NC Zamak 240V 250V 3NC Preventa Yes - 8 XCSA - 114mm
RS Stock No. 666-4956
Mfr. Part No.XCSC702EX
HK$2,327.45
Each
units
Screw Key 2NC/1NO Zamak 240V 250V 2NC/1NO Preventa - - 8 XCSC - 44mm
RS Stock No. 814-7003
Mfr. Part No.XCSMP59L2
HK$883.09
Each
units
Pre-Cabled Key NO/NC Polyamide 240V 250V - Preventa Yes - - XCSM - 30mm
RS Stock No. 133-0084
Mfr. Part No.XCSA503
HK$769.10
Each
units
1/2 in NPT Key 1NC/2NO Zamak 240V 250V 1NC/2NO Preventa Yes - 8 XCSA - 114mm
RS Stock No. 814-7071
Mfr. Part No.XCSTA793
HK$604.50
Each
units
Cable Key 2NC/1NO Glass Fibre Reinforced PA 240V 250V - Preventa Yes - 8 XCSTA - 30mm
RS Stock No. 133-0077
Mfr. Part No.XCSDMP50010
HK$813.28
Each
units
10m Pre-Cabled - - Plastic - - NC/3NO Preventa Yes - - XCSDMP - 88mm
RS Stock No. 766-1598
Mfr. Part No.XCSB502
HK$1,070.00
Each
units
- - 2NO/NC Zamak 240V 250V 2NO/NC Preventa Yes - - XCSB - 44mm
RS Stock No. 132-9171
Mfr. Part No.XCSTA892
HK$389.26
Each
units
M16 Key 3NC Glass Fibre Reinforced PA 240V 250V 3NC Preventa Yes - 8 XCSTA - 115mm
RS Stock No. 279-6400
Mfr. Part No.XCSTA791
HK$402.75
Each
units
Screw Key 2NC/1NO Glass Fibre Reinforced PA 240V 250V 2NC/1NO Preventa - - 8 XCSTA - 30mm
RS Stock No. 252-3864
Mfr. Part No.XCSPA591
HK$333.00
Each
units
- Key 1NC/1NO Polyamide 240V 250V - Preventa - - 8 XCSPA - 30mm