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. 410-7212
Mfr. Part No.SKT-U1Z M3
£22.77
Each
Units
Screw Key 1NC/1NO Glass Fibre Reinforced Thermoplastic 240V 250V 1NC/1NO - Yes - 4 SKT - 27mm
RS Stock No. 410-7206
Mfr. Part No.SKI-U1Z M3
£24.04
Each
Units
Screw Key 1NC/1NO Glass Fibre Reinforced Thermoplastic 240V - 1NC/1NO - Yes - 4 SKI - 30.5mm
RS Stock No. 436-5575
Mfr. Part No.SKI-A2Z M3
£24.92
Each
Units
Screw Key 2NC Glass Fibre Reinforced Thermoplastic 240V - 2NC - Yes - 4 SKI - 30.5mm
RS Stock No. 436-5569
Mfr. Part No.SKI-UV15Z M3
£26.91
Each
Units
Screw Key 1NC/1NO Glass Fibre Reinforced Thermoplastic 240V - 1NC/1NO - Yes - 4 SKI - 30.5mm
New
RS Stock No. 189-5322
Mfr. Part No.6051201008
£107.69
Each
Units
- - - - - - - - - - - BF - -
New
RS Stock No. 189-5323
Mfr. Part No.6050100001
£92.31
Each
Units
- - - - - - - - - - - BF - -
New
RS Stock No. 189-5318
Mfr. Part No.6051101004
£7.69
Each
Units
- - - Glass Fibre Reinforced Thermoplastic - - - - - - - - - 25.4mm
RS Stock No. 189-5311
Mfr. Part No.6018200015
£92.31
Each
Units
Screw - 2NC (Inter Lock), NC/NO (Guard Lock) Glass Fibre Reinforced Thermoplastic 24V 24V 2NC (Inter Lock), NC/NO (Guard Lock) - Yes Guard Lock, Inter Lock - SLC - 44mm
RS Stock No. 189-5319
Mfr. Part No.6051201005
£28.85
Each
Units
- - - Aluminium - - - - - - - - - 35.5mm
RS Stock No. 189-5302
Mfr. Part No.6018200009
£92.31
Each
Units
Screw - 2NC (Inter Lock), NC/NO (Guard Lock) Glass Fibre Reinforced Thermoplastic 24V 24V 2NC (Inter Lock), NC/NO (Guard Lock) - Yes Guard Lock, Inter Lock - SLC - 44mm
RS Stock No. 189-5305
Mfr. Part No.6018200018
£103.85
Each
Units
M12 - 1NC (Inter Lock), 2NC (Guard Lock) Glass Fibre Reinforced Thermoplastic 24V 24V 2NC (Guard Lock), NC (Inter Lock) - Yes Guard Lock, Inter Lock - SLC - 44mm
RS Stock No. 189-5312
Mfr. Part No.6018200016
£92.31
Each
Units
Screw - 2NC (Guard Lock), NC/NO (Inter Lock) Glass Fibre Reinforced Thermoplastic 24V 24V 2NC (Guard Lock), NC/NO (Inter Lock) - Yes Guard Lock, Inter Lock - SLC - 44mm
New
RS Stock No. 189-5320
Mfr. Part No.6051201009
£28.85
Each
Units
Screw - - - - - - - - - - SLC - -
RS Stock No. 189-5308
Mfr. Part No.6018200003
£92.31
Each
Units
Screw - NC/NO (Guard Lock), NC/NO (Inter Lock) Glass Fibre Reinforced Thermoplastic 240V 24V NC/NO (Guard Lock), NC/NO (Inter Lock) - Yes Guard Lock, Inter Lock - SLC - 44mm
RS Stock No. 189-5303
Mfr. Part No.6018200010
£92.31
Each
Units
Screw - 1NC (Inter Lock), 2NC/1NO (Guard Lock) Glass Fibre Reinforced Thermoplastic 24V 24V 2NC/1NO (Guard Lock), NC (Inter Lock) - Yes Guard Lock, Inter Lock - SLC - 44mm
New
RS Stock No. 189-5306
Mfr. Part No.5018200019
£103.85
Each
Units
M12 - NC (Inter Lock), NC/NO (Guard Lock) Glass Fibre Reinforced Thermoplastic 24V 24V NC (Inter Lock), NC/NO (Guard Lock) - Yes Guard Lock, Inter Lock - SLC - 44mm
RS Stock No. 189-5299
Mfr. Part No.6018200001
£92.31
Each
Units
Screw - NC/NO (Guard Lock), NC/NO (Inter Lock) Glass Fibre Reinforced Thermoplastic 24V 24V NC/NO (Guard Lock), NC/NO (Inter Lock) - Yes Guard Lock, Inter Lock - SLC - 44mm
RS Stock No. 189-5313
Mfr. Part No.6018200017
£92.31
Each
Units
Screw - 2NC (Guard Lock), 2NC (Inter Lock) Glass Fibre Reinforced Thermoplastic 24V 24V 2NC (Guard Lock), 2NC (Inter Lock) - Yes Guard Lock, Inter Lock - SLC - 44mm
New
RS Stock No. 189-5321
Mfr. Part No.6050101002
£92.31
Each
Units
- - - - - - - - - - - BF - -
RS Stock No. 189-5317
Mfr. Part No.6051101003
£7.69
Each
Units
- - - Glass Fibre Reinforced Thermoplastic - - - - - - - - - 25.4mm