Product Attribute	Attribute Value	Search
Series	GK Series
Type	Interlock Key

Honeywell GK Series - MICRO SWITCH Key-Operated Safety Interlock Switches: 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. Features:

Up to four contacts within each switch for control circuit applications (NC contacts) and auxiliary contacts (NOcontacts) to indicate the key removal from the switch

Optional one integral LED to indicate power to the switch or two integral LEDs to indicate power to the switch and output status of the switch

Designed and evaluated for safety functions up to and including a SIL3 level

Electrostatic epoxy coated die-cast zinc housing with the EN50041 30 x 60 mm mounting

Four different types of stainless steel keys

1NC/1NO, 2NC, 2NC/1NO, 2NC/2NO, 3NC/1NO, 4NC contact options

Positive opening operation of normally closed contacts to EN/IEC 60947-5-1-3 specification

Normally open (NO) contacts to indicate key has been removed

Unique friction feature design for key retention

Dual entry head design (side or top entry) for key; up to eight different key entry positions

Optional one or two integral LEDs in cover of switch for monitoring switch signal and/or output status

Different conduit options for global applications

Operating temperature range of -25 °C to 85 °C [-13 °F to 185 °F]

Switch body environmentally sealed to IP67 and NEMA 1, 4, 12, & 13

CE, CSA, and UL agency certifications

Designed and agency evaluated for safety functions up to and including a SIL3 level Applications:

Hinged or sliding gates, guards, or doors for:

Machine tool and metalworking equipment

Plastic molding equipment

Robotic cells

Special purpose machinery

• Delivery of spare parts and industrial equipment throughout the USA by Fedex transport company.
• Flexible payment system accepting bank transfers, MasterCard, VISA, PayPall, App Pay, Google Pay.
• Directly from stock and on order.