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 Lock Type Actuator Included Housing Material Maximum AC Voltage Safety Contacts Maximum DC Voltage Range IP Rating Hazardous Area Certification Number of Head Directions Series
RS Stock No. 625-0330
Mfr. Part No.AZ16-02ZVRK-M20
BrandSchmersal
PHP2,897.35
Each
units
M20 Key 2NC - - Glass Fibre Reinforced Thermoplastic 230V 2NC 24V - IP67 - 3 AZ16
RS Stock No. 305-1966
Mfr. Part No.XCSPA791
PHP6,940.29
Each
units
Screw Key 2NC - - Glass Fibre Reinforced PA 240V - 250V Preventa IP67 - 8 XCSPA
RS Stock No. 820-3500
Mfr. Part No.GKMA33
BrandHoneywell
PHP6,566.66
Each
units
Cable Key 1NC/1NO - No Glass Filled PET 240V - 250V - IP66, IP67 - 2 GKM
RS Stock No. 625-0374
Mfr. Part No.AZ15ZVRK-M20
BrandSchmersal
PHP3,123.38
Each
units
M20 Key 1NC - - Glass Fibre Reinforced Thermoplastic 230V 1NC 24V - IP67 - 3 AZ15
RS Stock No. 623-3060
Mfr. Part No.AZ16-03ZVRK-M20
BrandSchmersal
PHP2,440.27
Each
units
M20 Key 3NC - - Glass Fibre Reinforced Thermoplastic 230V 3NC 24V - IP67 - 3 AZ16
RS Stock No. 820-3507
Mfr. Part No.GKMB33
BrandHoneywell
PHP5,925.72
Each
units
Cable Key 1NC/1NO - Yes Glass Filled PET 240V - 250V - IP66, IP67 - 2 GKM
RS Stock No. 263-3624
Mfr. Part No.XCSA702
PHP18,538.01
Each
units
Screw Key 2NC/1NO - - Zamak 240V 2NC/1NO 250V Preventa IP67 - 8 XCSA
RS Stock No. 623-3048
Mfr. Part No.AZ16-02ZVRK-M20-2254
BrandSchmersal
PHP2,213.12
Each
units
M20 Key 2NC - - Glass Fibre Reinforced Thermoplastic 230V 2NC 24V - IP67 - 3 AZ16
RS Stock No. 240-8232
Mfr. Part No.D4BS15FS
BrandOmron
PHP6,381.78
Each
units
PG 13.5 Key 1NC/1NO - - Plastic 400V 1NC/1NO - - IP67 - 4 D4BS
RS Stock No. 861-4641
Mfr. Part No.D4GS-N2T
BrandOmron
PHP4,453.40
Each
units
Cable Key 2NC - - Plastic 240V 1NC 250V - IP67 - 2 D4GS
RS Stock No. 240-8692
Mfr. Part No.BD5935.48 DC24V
BrandDold
PHP23,080.40
Each
units
- - - - - - - 4 - Safemaster - - - BD 5935
RS Stock No. 623-2972
Mfr. Part No.AZ15ZVRK-M20-2254
BrandSchmersal
PHP2,086.31
Each
units
M20 Key 1NC - - Glass Fibre Reinforced Thermoplastic 230V 1NC 24V - IP67 - 3 AZ15
RS Stock No. 840-2823
Mfr. Part No.SI-QS90MFF
BrandBanner
PHP11,105.15
Each
units
M20 Key 2NC/1NO - Yes Glass Fibre Reinforced PA 230V - 24V - IP65 - 2 SI-QS90
RS Stock No. 362-2782
Mfr. Part No.AZ16-12ZI-B1-M20
BrandSchmersal
PHP5,054.24
Each
units
M20 Key 2NC/1NO - Yes Glass Fibre Reinforced Thermoplastic 230V 2NC 24V - IP67 - 3 AZ16
RS Stock No. 240-8709
Mfr. Part No.BD5935.48 AC50/60Hz 230V
BrandDold
PHP24,038.96
Each
units
- - - - - - - 3 - Safemaster - - - BD 5935
RS Stock No. 698-8723
Mfr. Part No.EX-AZ16-12ZVRK-M20-3D
BrandSchmersal
PHP4,957.44
Each
units
Screw Key 2NC/1NO - - Glass Fibre Reinforced Thermoplastic 230V 2NC 24V - IP67 ATEX 3 EX-AZ16
RS Stock No. 623-3054
Mfr. Part No.AZ16-12ZVRK-M20
BrandSchmersal
PHP3,284.82
Each
units
M20 Key 2NC/1NO - - Glass Fibre Reinforced Thermoplastic 230V 2NC 24V - IP67 - 3 AZ16
RS Stock No. 861-4644
Mfr. Part No.D4GS-N4R
BrandOmron
PHP4,890.15
Each
units
Cable Key 3NC - - Plastic 240V 2NC 250V - IP67 - 2 D4GS
RS Stock No. 410-7212
Mfr. Part No.SKT-U1Z M3
PHP2,135.22
Each
units
Screw Key 1NC/1NO - Yes Glass Fibre Reinforced Thermoplastic 240V 1NC/1NO 250V - IP65 - 4 SKT
RS Stock No. 826-3880
Mfr. Part No.208026
BrandIDEM
PHP20,402.40
Each
units
Cable Key 2NC/2NO - - Stainless Steel 240V 2NC/1NO - Kobra IP67, IP69K ATEX 4 K-SS-Ex