Allen-Bradley 440K-T11210 Door Interlock Switch

Allen-Bradley Guardmaster Trojan 5 440K-T11210 door interlock switch provides guarded access control for hinged, sliding, or lift-off guards using a universal tongue actuator that engages the guard edge on closing. The Trojan 5 tongue interlock includes two normally closed safety contacts and one normally open contact for primary interlock logic, plus an auxiliary contact (MBB) for monitoring or signaling, and it ships with a 1/2 in. NPT conduit adapter for wiring. It features a metal guide and a fully flexible actuator path to accommodate guard misalignment and varied mounting situations, making it suitable for a range of industrial safety installations. Common applications include safeguarding machine doors in packaging, manufacturing, and automated systems where the guard must remain interlocked while the equipment operates, and the interlock is designed to be integrated into Guardmaster safety circuits for compliant shut-down when the door is open.