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 Number of Head Directions Series Auxiliary Contacts
RS Stock No. 147-483
Mfr. Part No.GKMA13
BrandHoneywell
TWD2,892.00
Each
units
Cable Key 1NC/1NO - - Glass Filled PET 50V 1NC/1NO 50V - IP66, IP67 2 GKM -
RS Stock No. 153-185
Mfr. Part No.GKEC03L
BrandHoneywell
TWD1,723.00
Each
units
M20 Key 1NC/1NO - - Glass Filled PET 600V 1NC/1NO 250V - IP66, IP67 2 GKE -
RS Stock No. 147-512
Mfr. Part No.GKMB13
BrandHoneywell
TWD2,827.00
Each
units
Cable Key 1NC/1NO - - Glass Filled PET 50V 1NC/1NO 50V - IP66, IP67 2 GKM -
RS Stock No. 337-3799
Mfr. Part No.GKBC1L7
BrandHoneywell
TWD5,366.00
Each
units
M20 Key 1NC/1NO - Yes Glass Filled PET 600V 1NC 250V - IP67 2 GKB 1NO
RS Stock No. 153-141
Mfr. Part No.GKNC21
BrandHoneywell
TWD2,719.00
Each
units
M20 Key 2NC/1NO - - Glass Filled PET 600V 2NC/1NO 250V - IP67 4 GKN -
RS Stock No. 147-556
Mfr. Part No.GKMB16
BrandHoneywell
TWD2,746.00
Each
units
Cable Key 2NC - - Glass Filled PET 50V 2NC 50V - IP66, IP67 2 GKM -
RS Stock No. 147-499
Mfr. Part No.GKMC09
BrandHoneywell
TWD4,136.00
Each
units
M12 Key 1NC/1NO - - Glass Filled PET 50V 1NC/1NO 50V - IP66, IP67 2 GKM -
RS Stock No. 843-5690
Mfr. Part No.GKMD06
BrandHoneywell
TWD3,080.80
Each (In a Pack of 5)
units
Cable Key 2NC - Yes Glass Filled PET 50V - 50V - IP66, IP67 2 GKM -
RS Stock No. 337-3812
Mfr. Part No.GKCC1L6
BrandHoneywell
TWD7,193.00
Each
units
M20 Key 1NC/1NO - Yes Glass Filled PET 600V 1NC 250V - IP67 2 GKC 1NO
RS Stock No. 147-534
Mfr. Part No.GKMD03
BrandHoneywell
TWD3,598.00
Each
units
M12 Key 1NC/1NO - - Glass Filled PET 50V 1NC/1NO 50V - IP66, IP67 2 GKM -
RS Stock No. 147-506
Mfr. Part No.GKMB39
BrandHoneywell
TWD2,964.00
Each
units
Cable Key 1NC/1NO - - Glass Filled PET 50V 1NC/1NO 50V - IP66, IP67 2 GKM -
RS Stock No. 820-3507
Mfr. Part No.GKMB33
BrandHoneywell
TWD3,054.00
Each
units
Cable Key 1NC/1NO - Yes Glass Filled PET 240V - 250V - IP66, IP67 2 GKM -
RS Stock No. 820-3519
Mfr. Part No.GKMC03
BrandHoneywell
TWD3,998.00
Each
units
M12 Key 1NC/1NO - Yes Glass Filled PET 240V - 250V - IP66, IP67 2 GKM -
RS Stock No. 820-3500
Mfr. Part No.GKMA33
BrandHoneywell
TWD3,171.00
Each
units
Cable Key 1NC/1NO - Yes Glass Filled PET 240V - 250V - IP66, IP67 2 GKM -