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. 625-0330
Mfr. Part No.AZ16-02ZVRK-M20
BrandSchmersal
kr 265,03
Each
Units
M20 Key 2NC Glass Fibre Reinforced Thermoplastic 230V 24V 2NC - - - 3 AZ16 - 30mm
RS Stock No. 698-8723
Mfr. Part No.EX-AZ16-12ZVRK-M20-3D
BrandSchmersal
kr 501,71
Each
Units
Screw Key 2NC/1NO Glass Fibre Reinforced Thermoplastic 230V 24V 2NC - - - 3 EX-AZ16 1NO 30mm
RS Stock No. 362-2782
Mfr. Part No.AZ16-12ZI-B1-M20
BrandSchmersal
kr 478,20
Each
Units
M20 Key 2NC/1NO Glass Fibre Reinforced Thermoplastic 230V 24V 2NC - Yes - 3 AZ16 1NO 30mm
RS Stock No. 296-4675
Mfr. Part No.XCSPA792
kr 389,83
Each
Units
Screw Key 2NC Glass Fibre Reinforced PA 240V 250V 2NC Preventa - - 8 XCSPA - 30mm
RS Stock No. 623-2972
Mfr. Part No.AZ15ZVRK-M20-2254
BrandSchmersal
kr 248,19
Each
Units
M20 Key 1NC Glass Fibre Reinforced Thermoplastic 230V 24V 1NC - - - 3 AZ15 - 75mm
RS Stock No. 623-3004
Mfr. Part No.AZ16ZVRK-M20-2254
BrandSchmersal
kr 265,03
Each
Units
M20 Key 1NC/1NO Glass Fibre Reinforced Thermoplastic 230V 24V 1NC - - - 3 AZ16 1NO 30mm
RS Stock No. 397-2150
Mfr. Part No.XCSA701
kr 867,39
Each
Units
Screw Key 2NC/1NO Zamak 240V 250V 2NC/1NO Preventa - - 8 XCSA - 44mm
RS Stock No. 623-2988
Mfr. Part No.AZ16ZVRK-M20
BrandSchmersal
kr 265,03
Each
Units
M20 Key 1NC/1NO Glass Fibre Reinforced Thermoplastic 230V 24V 1NC - - - 3 AZ16 1NO 30mm
RS Stock No. 623-3098
Mfr. Part No.AZ 17-11ZK
BrandSchmersal
kr 279,46
Each
Units
M16 Key 1NC/1NO Glass Fibre Reinforced Thermoplastic 230V 24V 1NC - - - 4 AZ17 1NO 30mm
RS Stock No. 397-2166
Mfr. Part No.XCSA801
kr 867,39
Each
Units
Screw Key 3NC Zamak 240V 250V 3NC Preventa - - 8 XCSA - 44mm
RS Stock No. 746-7295
Mfr. Part No.D4NS-4BF
BrandOmron
kr 340,60
Each
Units
Screw Key 2NC Plastic - - - - - - 4 D4NS - 30.6mm
RS Stock No. 623-3076
Mfr. Part No.AZ16-12ZVRK-M20-2254
BrandSchmersal
kr 302,09
Each
Units
M20 Key 2NC/1NO Glass Fibre Reinforced Thermoplastic 230V 24V 2NC - - - 3 AZ16 1NO 30mm
RS Stock No. 625-0374
Mfr. Part No.AZ15ZVRK-M20
BrandSchmersal
kr 246,23
Each
Units
M20 Key 1NC Glass Fibre Reinforced Thermoplastic 230V 24V 1NC - - - 3 AZ15 - 75mm
RS Stock No. 410-7206
Mfr. Part No.SKI-U1Z M3
kr 311,61
Each
Units
Screw Key 1NC/1NO Glass Fibre Reinforced Thermoplastic 240V - 1NC/1NO - Yes - 4 SKI - 30.5mm
RS Stock No. 307-6167
Mfr. Part No.D4BS-1AFS
BrandOmron
kr 1 011,00
Each
Units
PG 13.5 Key 2NC Plastic 400V - 2NC - - - 4 D4BS - 43mm
RS Stock No. 296-4669
Mfr. Part No.XCSPA592
kr 389,83
Each
Units
Screw Key 1NC/1NO Glass Fibre Reinforced PA 240V 250V 1NC/1NO Preventa - - 8 XCSPA - 30mm
RS Stock No. 623-3054
Mfr. Part No.AZ16-12ZVRK-M20
BrandSchmersal
kr 302,09
Each
Units
M20 Key 2NC/1NO Glass Fibre Reinforced Thermoplastic 230V 24V 2NC - - - 3 AZ16 1NO 30mm
RS Stock No. 861-4650
Mfr. Part No.D4NS-2CF
BrandOmron
kr 402,80
Each
Units
G1/2 Key 2NC/1NO Plastic 240V 250V - - Yes - 4 D4NS - 96mm
RS Stock No. 410-7212
Mfr. Part No.SKT-U1Z M3
kr 295,10
Each
Units
Screw Key 1NC/1NO Glass Fibre Reinforced Thermoplastic 240V 250V 1NC/1NO - Yes - 4 SKT - 27mm
RS Stock No. 623-3082
Mfr. Part No.AZ 17-11ZRK
BrandSchmersal
kr 279,46
Each
Units
M16 Key 1NC/1NO Glass Fibre Reinforced Thermoplastic 230V 24V 1NC - - - 4 AZ17 1NO 30mm
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