440K-T11204

Overview of Allen Bradley 440K-T11204

The Allen Bradley 440K-T11204 is a Guardmaster Trojan 5 tongue interlock safety switch, engineered to provide reliable door position monitoring and safeguard personnel in industrial environments. The device uses a flexible fully-guided actuator and robust plastic housing to prevent ergonomic damage and tampering. It includes dual key entry slots for enhanced installation versatility and a rotatable head, which allows four actuator entry options. The safety switch features "Break Before Make" contacts for improved safety logic, reducing risk during maintenance or access stage changes. The Trojan 5 series by Allen Bradley is widely recognized for dependable machine guarding and integration compatibility with most industrial control systems. The 440K-T11204 is well suited to environments requiring consistent safety circuit integrity and compliance with international standards.

Key Features of Allen Bradley 440K-T11204

• Flexible actuator design for various mounting positions
• Dual key entry slots and rotatable head with four actuator entry options
• Break Before Make contact operation guarantees safer switching
• 2 Normally Closed safety contacts and 1 Normally Open auxiliary contact
• Plastic housing designed for tamper resistance
• Contact rating up to 6A at 125V AC

Technical Specs of 440K-T11204

• Contact Configuration: 2 N.C. safety, 1 N.O. auxiliary
• Contact Rating: 6A at 125V AC
• Housing Type: Plastic
• Actuator: Fully-flexible, tongue style
• Conduit Entries: M20 and 1/2" NPT adapter
• Operation: Break Before Make

Applications / Use Case

Allen Bradley 440K-T11204 is ideally employed in safeguarding doors, gates, and access points in automation equipment or processing lines where machine hazards must be controlled. The Trojan 5 tongue interlock switch ensures machines remain in a safe state while guards or covers are open. It fits both new and retrofit machine safety systems across industries such as packaging, assembly, robotics, and food processing. Typical installation involves mounting the actuator on the opening part of a guard and positioning the switch on a fixed machine surface. When the guard is opened, the interlock breaks the safety circuit, immediately stopping hazardous motion or processes. The flexible installation options and proven contact reliability make this model suitable for high-usage sites requiring SIL-rated machine guarding solutions.

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