Overview
The Allen-Bradley 440G-EZS21STL05H is a safety interlock switch from the Guardmaster 440G-EZ series. This electromagnetic guard locking switch uses a magnetic actuator to monitor movable physical guards and provide process protection without contact. Designed for safety-critical applications, the 440G-EZS21STL05H operates at 24 VDC and delivers 500N holding force to prevent unauthorized access during machine operation.
Key Features
- Magnetic Actuator Technology: Non-contact operation eliminates mechanical wear and ensures reliable guard monitoring
- 500N Holding Force: Robust locking mechanism prevents guard opening during machine cycle
- 2 x PNP Safety Contact Configuration: 2 N.C. (normally closed) safety contacts plus 1 N.O. auxiliary contact for flexible control logic integration
- M12 Quick-Disconnect Connector: 8-pin pigtail connector (6-inch cable) enables fast installation and maintenance
- Aluminum Construction: Lightweight, corrosion-resistant housing suitable for industrial environments
- Safety Certifications: CE, TUV General Safety, UL Listed, RCM, and KC certifications validate compliance with global safety standards
Technical Specifications
- Voltage: 24 VDC
- Actuator Type: Magnetic
- Holding Force: 500 N
- Safety Contacts: 2 x PNP (N.C.)
- Auxiliary Contacts: 1 x N.O.
- Connection Type: M12 QD, 8-pin male
- Cable Length: 6 inches (150 mm) pigtail
- Material: Aluminum
- Switch Type: Guard Locking (Power to Lock)
- Operating Temperature: Industrial range
- Certifications: CE, TUV General Safety, UL Listed, Australian RCM, Korean KC
- Country of Origin: Malaysia
- UPC: 194033228408
Typical Applications
- Machine press and stamping equipment guard interlocking
- Injection molding machine access control
- Robotic cell and collaborative robot perimeter gates
- Conveyor system safety gates and access doors
- Assembly line safety enclosures requiring positive lock confirmation
- Process equipment requiring guard position monitoring during operation
Compatibility & Replacements
The 440G-EZS21STL05H is part of the Guardmaster 440G-EZ safety interlock switch family, which also includes the 440G-ZS21STL models for different mounting and connector configurations. Compatible with Allen-Bradley safety control modules and third-party safety PLCs supporting standard safety contact logic. Always verify voltage, contact configuration, and connector type when substituting or upgrading legacy guard switches. For system integrations, consult Rockwell Automation technical support or your distributor to confirm compatibility with existing machine safety circuits.
