Overview
The Allen-Bradley 440G-EZS21STL05H is a Guardmaster electromagnetic switch engineered for safety-critical machine guarding. Designed to enhance machine safety as well as reliably help protect a working process from unplanned downtime, which will help improve productivity and increase efficiency. This guard locking switch combines safety contact redundancy with position-sensing capability in a compact, sealed design suitable for harsh industrial environments.
Key Features
- 2 N.C. (normally closed) safety contacts and 1 N.O. (normally open) auxiliary contact
- 500N holding force magnetic actuator for secure door locking
- 24 VDC operating voltage
- 6-inch (150mm) pigtail with M12 male 8-pin quick-disconnect connector
- Aluminum construction for corrosion resistance
- Power-to-lock operation (solenoid voltage N/A)
Technical Specifications
- Product Type: Guard locking switch
- Actuator Type: Magnetic
- Safety Contacts: 2 N.C., 1 N.O. auxiliary
- Operating Voltage: 24 VDC
- Holding Force: 500N
- Connection: M12 QD (quick-disconnect), 8-pin
- Cable Length: 6 inches (150mm) pigtail
- Housing Material: Aluminum
- Series: 440G-EZ Guardmaster
- UPC: 194033228408
- Condition: New in Box
Typical Applications
- Machine safety door interlocks and guarding systems
- Access gates and protective enclosures requiring safety-rated feedback
- Conveyor and robotic cell safeguards
- Press and injection molding machine guards
- Industrial equipment requiring safety-level door position verification
Compatibility & Replacements
The 440G-EZS21STL05H features a cable with 8-pin M12 connector, differentiating it from the 440G-EZS21STL05J variant which uses a 5-pin M12 connector. Both are part of the Guardmaster 440G-EZ electromagnetic switch family. Consult Rockwell Automation technical documentation or contact a distributor for cross-reference and legacy replacement options specific to your application.
