440N-Z21US2AN

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Overview of Allen Bradley 440N-Z21US2AN

The Allen Bradley 440N-Z21US2AN is part of the SensaGuard Guardmaster safety switch series, engineered for modern machine guarding and access control systems. This non-contact switch is designed for high-reliability applications where detecting the presence or absence of a guard door is critical to operator safety. Its rectangular flat pack housing and solid-state contacts provide dependable performance in demanding industrial environments. The Allen Bradley 440N-Z21US2AN supports integration into safety-related control systems, requiring a risk assessment prior to installation as per safety standards. Certified with compliance to regional safety regulations, it is a trusted component for OEMs and end users seeking to meet international safety requirements.

Key Features of Allen Bradley 440N-Z21US2AN

  • Non-contact, solid-state safety switch for reliable guard door detection
  • 24V DC Class 2 SELV or PELV power supply operation for enhanced safety
  • Two independently connected safety outputs (2 N.C. Safety, 1 N.O. Aux) for flexible integration
  • Fast response time (Off) of 45 ms and DC-12/DC-13 utilization category
  • Designed for use in safety-related control systems; risk assessment required before installation
  • Robust mechanical design with housing made from durable polycarbonate
  • High environmental resistance: IP66, IP67, IP69K washdown rating for demanding installations
  • Operating temperature range of -25°C to +70°C for use in harsh conditions
  • Compact, rectangular flat pack design for easy integration into machine guards
  • Suitable for high-availability applications with a maximum operating cycle frequency of 0.25 Hz

Technical Specs of Allen Bradley 440N-Z21US2AN

Parameter Specification
Housing Material Plastic Rectangular Flat Pack (Polycarbonate)
Electrical Connection PVC Cable, 2 x PNP Safety (0V safe), 1 x PNP Aux (24V run)
Operating Voltage 24V DC, Class 2 SELV/PELV
Output Current (Max) 200 mA
Response Time (Off) 45 ms
Assured Sensing Distance 25 mm
Operating Temperature -25°C to +70°C
Protection Rating IP66, IP67, IP69K
Mechanical Life 500,000 cycles
Dimensions (W x H x L) 16.2 x 5.2 x 18.5 cm
Weight 0.299 kg

Applications / Use Case

The Allen Bradley 440N-Z21US2AN is widely used in industrial automation for applications requiring access protection and machine safety monitoring. It is ideal for guarding hazardous areas such as robotic cells, presses, and assembly lines where non-contact, solid-state sensing can minimize maintenance and maximize reliability. The switch is suited for environments exposed to dust, moisture, or high-pressure washdowns thanks to its robust IP rating. Integrators and plant engineers select this model for safety systems that demand compliance with international machine safety standards and where downtime reduction is a priority. Replace older mechanical safety switches with the 440N-Z21US2AN for improved uptime and safety performance.

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440N-Z21US2AN

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Does it come with a warranty?

Yes, All products are offered wth 1-Year warranty.

What is the condition of the product?

All products sold are New & Unused.

How fast is shipping?

All products are delivered within 2-8 business days depending on our stock location.

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