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Overview

MICRO SWITCH GK Series switches are key-operated safety interlock rugged metal switches which monitor the positions of gates, guards, or doors. The key is attached to the moving portion of the gate, guard, or door. When the gate is closed, the key is inserted into the GK switch indicating a safe position (gate closed) and the machine process can start. The positive opening normally closed contacts are held closed when the key is inserted into the GK switch. Opening the gate, removes the key from the switch. This action opens the normally closed contacts of the switch and interrupts the machine’s control circuit.

GK Series switches are designed with dual-entry positions for the key. The key can be inserted from the top or side of the switch which allows more flexibility in mounting the switch in the application. There are four different styles of keys and a variety of switch contact arrangements to satisfy the requirements for most applications requiring a safety interlock key switch. GK Series switches are designed with a unique friction feature for key retention. GK Series switches have been evaluated for safety functions up to and including a safety integrity level (SIL) of SIL3 when evaluated to the requirements of IEC 61508-2:2010.

Documents

TITLE DOCUMENT TYPE LANGUAGE SIZE
GK Series Global Key Operated Safety Interlock Switch Datasheet English 2MB
PK 81590: GK Series Key Operated Safety Interlock Switch, Issue 3 Installation Instructions and Approvals Documentation English 110KB
PK 80109: GK Series Dual Entry Key Operated Safety Interlock Switch Installation Instructions and Approvals Documentation English 541KB
MICRO SWITCH Safety Switches Comparison Product Range Guide English 504KB
Industrial Product Line Card Line Card/Selection Chart English 571KB
Limit Switches and Machine Safety Range Guide Product Range Guide English 22MB
Electromechanical Safety Switch Product Selection Guide Catalog Information English 351KB
GK switch electrical endurance certificate Certificate English 27KB
GK switch mechanical endurance certificate Certificate English 27KB
GK switch SIRA certificate Certificate English 58KB

Browse GK Series Products

Product Switch Type Circuitry Actuator Termination Type Housing Material
GKBA1LX 1NC/1NO Direct Opening, Snap Action Key 1/2 NPT Zinc Die-Cast
GKBA30LX 4NC Direct Opening Key 1/2 NPT Zinc Die-Cast
GKBA36LX 3NC/1NO Direct Opening, Slow Action Key 1/2 NPT Zinc Die-Cast
GKBA6LX 2NC Direct Opening, Slow Action Key 1/2 NPT Zinc Die-Cast
GKBC1LX 1NC/1NO Direct Opening, Snap Action Key 20 mm Zinc Die-Cast
GKBC30LX 4NC Direct Opening Key 20 mm Zinc Die-Cast
GKBC36LX 3NC/1NO Direct Opening, Slow Action Key 20 mm Zinc Die-Cast
GKBC6LX 2NC Direct Opening, Slow Action Key 20 mm Zinc Die-Cast
GKCA1LX 1NC/1NO Direct Opening, Snap Action Key 1/2 NPT Zinc Die-Cast
GKCA30LX 4NC Direct Opening Key 1/2 NPT Zinc Die-Cast