GKNC21 Honeywell

Honeywell GKN Series - MICRO SWITCH Key-Actuated Safety Switches: The GKN Series key-actuated safety interlocking limit switches are designed for applications where machine guarding is required. Up to 3 normally closed contacts are available per switch to meet most control circuit applications. All normally closed contacts are positive opening . Direct mechanical linkage within the switch force the normally closed contacts open when the actuator key is removed from the switch. When the actuator key is re-inserted into the switch, the contacts change state. The double-insulated plastic housing and stainless steel actuator-key are designed for demanding environments with the internal switch enclosure being environmentally sealed. The design of the switch allows 4 actuator-key entry locations for installation flexibility. Three conduits are integral to each switch for convenience of electrical connections. Features:

Up to three NC contacts for control, signaling, or contact redundancy

Four actuator key entry positions

Optional flexible key for small door radius

Optional funnel key where door misalignment may occur

Red switch body for easy safety recognition

Four different styles of stainless steel actuator keys

Three conduits with 0.5-14 NPT or M20 thread connection

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

Three contacts; 2NC/1NO or 3NC

Switch chamber environmentally sealed to IP67 and NEMA 1, 4X (indoor), 12, and 13

CCC, CE, and UL certifications

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

Safety interlock for guards or doors on equipment and machinery

Designed for hinge or sliding guards or doors