Allen-Bradley 440K-T11449 Tongue Interlock Switch

Allen-Bradley 440K-T11449 Trojan 6 Universal Tongue Interlock Switch is a guard-locking safety interlock designed for access control on hazardous machinery. The Trojan 6 tongue switch uses an integrated tongue actuator (no external actuator) and a guard-locking mechanism to secure the guard until safe conditions are restored. It features four contacts: three normally closed safety contacts and one normally open auxiliary contact, with Break-Before-Make (BBM) operation to minimize switching hazards. Conduit entry is M20 for standard industrial wiring, and the unit is part of Rockwell Automation’s Guardmaster line under the 440K family. The device is intended for mounting on guarded equipment such as presses and other machinery where the guard must remain locked while the machine is energized or unsafe movement is possible, aligning with common machine guarding safety requirements. The 440K-T11449 designation identifies the Trojan 6 Tongue Interlock within Allen-Bradley’s 440K family, signaling a universal tongue interlock configuration suitable for use with compatible guards and frames in industrial automation environments.