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440G-TZS21UPRH

440G-TZS21UPRH

Manufacturer: ALLEN BRADLEY

Condition: New and Unused, Surplus.

Price: Available on Request

Overview of Allen Bradley 440G-TZS21UPRH

The Allen Bradley 440G-TZS21UPRH Guardmaster TLS-Z GD2 Guard Locking Switch is a safety device designed for secure machine guarding applications. Operating with a power-to-release principle, it prevents unintended access to hazardous areas by controlling the locking mechanism through a 24V DC supply. This guard locking switch features solid-state contacts, offering reliable safety outputs with two normally closed safety contacts and one normally open auxiliary contact. Its robust design includes UL-approved glass-filled PBT housing and stainless steel actuator parts, ensuring durability in industrial environments. The model supports lock status monitoring and is compatible with systems requiring precise, fail-safe door interlocking. Ideal for applications demanding high locking forces and strict safety standards, the 440G-TZS21UPRH helps maintain operational safety with integrated fault protections and status indicators.

Key Features of Allen Bradley 440G-TZS21UPRH

  • Power-to-release locking principle for enhanced safety control
  • Two solid-state normally closed safety contacts and one normally open auxiliary contact
  • Compatibility with 24V DC operating voltage with up to +10% / -15% tolerance
  • High locking force capacity: up to 2600 N with steel bolts and 1950 N with plastic pins
  • Auxiliary output for lock status indication, independent of safety output status
  • M12 8-pin connector for easy wiring and integration
  • Built-in protection: short circuit, overload, false pulse, transient noise, reverse polarity, overvoltage, and thermal shutdown
  • Operating frequency up to 1 Hz and fast response times for safety switching
  • Certified to multiple industrial safety standards including UL and CE compliance

Technical Specs of 440G-TZS21UPRH

Specification Details
Operating Voltage 24V DC +10% / -15%
Safety Contacts 2 Normally Closed (PNP)
Auxiliary Contact 1 Normally Open (PNP)
Locking Force (Steel Bolts) 2600 N (585 lb)
Locking Force (Plastic Pins) 1950 N (488 lb)
Maximum Current per Output 200 mA
Power Consumption (idle) 50 mA
Power Consumption (energized) 120 mA (260 mA inrush)
Response Time 45 ms (first switch), +10 ms for additional
Actuation Speed Max 160 mm/second
Connector Type M12 8-pin
Material UL Approved glass-filled PBT housing; Stainless steel actuator
Protection Ratings Short circuit, overload, reverse polarity, thermal shutdown, and more

Applications / Use Case

The Allen Bradley 440G-TZS21UPRH is primarily used in industrial safety guarding where access control is critical. Its power-to-release mechanism ensures that doors or guards remain locked during hazardous machine operation and only unlock when it is safe, preventing accidental or unauthorized entry. Typical use cases include assembly lines, packaging machinery, robotic work cells, and automated manufacturing systems. The switch’s strong locking force and status monitoring reduce downtime by providing clear lock state feedback to control systems. Integration with safety PLCs and control panels enables seamless safety interlocking within complex automation architectures. This switch is suitable for environments requiring compliance with stringent safety regulations and where reliable guard locking is essential to protect personnel and equipment.

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