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 Actuator Included Housing Material Maximum AC Voltage Safety Contacts Maximum DC Voltage Range Lock Type IP Rating Number of Head Directions Series Auxiliary Contacts
RS Stock No. 826-3886
Mfr. Part No.208019
BrandIDEM
£177.95
Each
Units
Cable Key 2NC - Stainless Steel 240V 2NC - Kobra - IP67, IP69K 4 K-SS-Ex -
RS Stock No. 826-3919
Mfr. Part No.200001
BrandIDEM
£24.53
Each
Units
M20 Key 2NC/1NO - Polyester 240V 2NC - Kobra - IP67 4 KP 1NO
RS Stock No. 826-3877
Mfr. Part No.222003
BrandIDEM
£25.17
Each
Units
M16 Key 1NC/1NO - Glass Fibre Polyester - 1NC/1NO - Kobra - IP67 8 INCH-1 -
RS Stock No. 826-3892
Mfr. Part No.204026
BrandIDEM
£246.38
Each
Units
Cable Key 2NC/2NO - Stainless Steel 250V 2NC/1NO 250V Kobra - IP67 8 KM-SS-Ex 1NO
RS Stock No. 826-3909
Mfr. Part No.204001
BrandIDEM
£87.62
Each
Units
M20 Key 2NC/1NO - Stainless Steel - 2NC/1NO - Kobra - IP67 8 KM-SS -
RS Stock No. 826-3864
Mfr. Part No.222001
BrandIDEM
£25.17
Each
Units
M16 Key 2NC - Glass Fibre Polyester - 2NC - Kobra - IP67 8 INCH-1 -
RS Stock No. 826-3915
Mfr. Part No.203007F
BrandIDEM
£48.06
Each
Units
M20 Key 3NC/1NO Yes Die Cast Metal 240V 3NC - Kobra - IP67 4 KM 1NO
RS Stock No. 826-3896
Mfr. Part No.208001
BrandIDEM
£85.38
Each
Units
M20 Key 2NC/1NO - Stainless Steel 240V 2NC - Kobra - IP67, IP69K 4 K-SS 1NO
RS Stock No. 826-3925
Mfr. Part No.200013F
BrandIDEM
£34.60
Each
Units
M20 Key 4NC Yes Polyester 240V 4NC - Kobra - IP67 4 KP -
RS Stock No. 826-3880
Mfr. Part No.208026
BrandIDEM
£244.58
Each
Units
Cable Key 2NC/2NO - Stainless Steel 240V 2NC/1NO - Kobra - IP67, IP69K 4 K-SS-Ex 1NO
RS Stock No. 826-3899
Mfr. Part No.204019
BrandIDEM
£118.61
Each
Units
Cable Key 2NC - Stainless Steel 250V 2NC 250V Kobra - IP67 8 KM-SS-Ex -
RS Stock No. 826-3874
Mfr. Part No.223001
BrandIDEM
£27.47
Each
Units
M16 Key 2NC/1NO - Glass Fibre Polyester - 2NC - Kobra - IP67 8 INCH-3 1NO
RS Stock No. 826-3912
Mfr. Part No.203001
BrandIDEM
£37.98
Each
Units
M20 Key 2NC/1NO - Die Cast Metal 240V 2NC - Kobra - IP67 4 KM 1NO
RS Stock No. 826-3928
Mfr. Part No.200001-SS
BrandIDEM
£35.19
Each
Units
M20 Key 2NC/1NO - Polyester 240V 2NC - Kobra - IP67 4 KP 1NO
RS Stock No. 826-3921
Mfr. Part No.200007
BrandIDEM
£31.60
Each
Units
M20 Key 3NC/1NO - Polyester 240V 3NC - Kobra - IP67 4 KP 1NO
RS Stock No. 826-3906
Mfr. Part No.208007
BrandIDEM
£92.47
Each
Units
M20 Key 3NC/1NO - Stainless Steel 240V 3NC - Kobra - IP67, IP69K 4 K-SS 1NO
RS Stock No. 826-3868
Mfr. Part No.222002
BrandIDEM
£53.55
Each
Units
M12 Key 2NC - Glass Fibre Polyester - 2NC - Kobra - IP67 8 INCH-1 -
RS Stock No. 185-7256
Mfr. Part No.M-TS (C301)
BrandIDEM
£83.22
Each
Units
M6 Screw Key - - Die Cast Metal, Stainless Steel - - - - Interlock - 2 M-TS -
RS Stock No. 185-7257
Mfr. Part No.M-HS (C301)
BrandIDEM
£73.99
Each
Units
M6 Screw Key - Yes Die Cast Metal, Stainless Steel - - - - Interlock - - M-HS -
RS Stock No. 185-7254
Mfr. Part No.M-TS (B201)
BrandIDEM
£83.22
Each
Units
M6 Screw Key - - Die Cast Metal, Stainless Steel - - - - Interlock - 2 M-TS -