The HONEYWELL part GKNA30 is a reliable safety interlock switch designed for industrial applications. This 3PST (3 Normally Closed) key-operated switch can handle up to 240VAC or 250VDC. With a sturdy screw mount and conduit for easy installation, this switch is built to last with a lifespan of up to 1,000,000 cycles. Ideal for ensuring safety and security in machinery and equipment, the GKNA30 is a dependable choice for demanding environments.