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440N-Z21SS2H

440N-Z21SS2H

Manufacturer: ALLEN BRADLEY

Condition: New and Unused, Surplus.

Price: Available on Request

Overview of Allen Bradley 440N-Z21SS2H

The Allen Bradley 440N-Z21SS2H is a plastic rectangular safety switch from the SensaGuard product family, designed for reliable guarding and door safety applications. Featuring a plastic rectangular housing and a flat pack standard coded actuator, this non-contact safety switch ensures precise and dependable detection with an assured sensing distance of 25 mm (0.98 in). It is equipped with dual PNP safety outputs and an auxiliary output for clear status signaling and diagnostics through LED indicators. The 440N-Z21SS2H operates on a 24 V DC power supply and includes a 6-inch pigtail with an 8-pin micro M12 connector for simple integration. This device meets a range of safety standards, making it suitable for demanding industrial environments where safety and durability are critical.

Key Features of Allen Bradley 440N-Z21SS2H

  • Plastic rectangular housing with flat pack standard coded actuator
  • Assured sensing distance of 25 mm (0.98 in) for precise detection
  • Two safety outputs (2 x PNP) with 0.2 A max current capacity
  • One auxiliary output (1 x PNP) for additional signaling needs
  • LED door status and diagnostic indication for easy troubleshooting
  • Operates at 24 V DC with low power consumption
  • 6-inch pigtail cable with 8-pin micro M12 connector for flexible wiring
  • Durable plastic construction suitable for industrial applications
  • Compliant with multiple safety certifications for reliable performance

Technical Specs of 440N-Z21SS2H

Specification Details
Product Family SensaGuard
Housing Style Plastic Rectangular Flat Pack
Assured Sensing Distance 25 mm (0.98 in)
Safety Outputs 2 x PNP, 0.2 A max
Auxiliary Output 1 x PNP, 0.2 A max
Operating Voltage 24 V DC ±10% / -15%
Connection 6-inch pigtail with 8-pin micro M12 connector
LED Indicators Status/Diagnostic LED for door and fault detection
Operating Temperature -25 to +70 °C (-13 to +158 °F)
Ingress Protection IP66, IP67, IP69K ratings

Applications / Use Case

The Allen Bradley 440N-Z21SS2H safety switch is ideal for protecting personnel and equipment by monitoring the position of guards, doors, or gates in industrial automation settings. Its non-contact sensing technology reduces mechanical wear and provides reliable operation in harsh environments including washdown and dust-prone areas due to its high ingress protection ratings. Typical applications include machine safety interlocks, access control on industrial machinery, conveyor guarding, and robotic cell safety. The switch’s diagnostic LED feature facilitates quick status checks and troubleshooting, reducing downtime and maintenance efforts. It integrates well into safety control systems requiring SIL (Safety Integrity Level) or PLe Category 4 certification, supporting compliance with rigorous safety standards.

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