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Allen Bradley

Allen Bradley 440N-Z21U26H SensaGuard RFID Safety Switch

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ManufacturerAllen Bradley

Part number440N-Z21U26H

Interlock Type RFID unique-coded non-contact switch

Housing 18 mm plastic barrel

Operating Voltage 24 V DC

Safety Outputs Dual PNP, 0.2 A max

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12-month warranty

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Veteran-owned

CAGE: 9NK75

RFID unique-coded actuator 2 PNP safety outputs 1 PNP auxiliary output IP69K rating (washdown-capable) SIL 3 / PLe / Cat 4 safety levels 18 mm plastic barrel housing M12 connector

Product description

The Allen-Bradley 440N-Z21U26H is a SensaGuard non-contact safety interlock switch featuring RFID-coded actuator technology. It is housed in an 18 mm plastic cylindrical barrel and offers high-level protection for guard doors and safety enclosures. The switch provides two PNP safety outputs and one PNP auxiliary output, meeting stringent safety standards.

Designed for safety-rated control systems, this switch meets SIL 3, PLe, and Cat 4 performance levels. Its IP69K rating makes it suitable for washdown and harsh environments. Applications include guard door monitoring, machine safety interlocks, packaging equipment, and robotics.

Stanlo Automation, your veteran-owned surplus parts supplier, offers the Allen-Bradley 440N-Z21U26H. We are committed to providing reliable industrial automation components. Secure your safety equipment needs with Stanlo Automation for quality and dependable service.

Technical specifications

Interlock Type	RFID unique-coded non-contact switch
Housing	18 mm plastic barrel
Operating Voltage	24 V DC
Safety Outputs	Dual PNP, 0.2 A max
Auxiliary Output	Single PNP
Enclosure Rating	IP69K
Safety Ratings	SIL 3 / PLe / Cat 4
Connection	8-pin M12 micro QD

Common applications

Guard door monitoring

Machine safety interlocks

Packaging equipment

Robotics and automated systems

Harsh or washdown environments

Material handling

Compatible systems

Safety relays Safety controllers Allen-Bradley SensaGuard accessories

Also known as

440N-Z21U26H, Allen Bradley SensaGuard, RFID Safety Interlock, Non-Contact Safety Switch

Replaces / compatible with

Compatible with Allen-Bradley SensaGuard 440N series accessories.

Technical note

Expert tip

The 8-pin M12 connector on the 440N-Z21U26H facilitates connection to safety control systems while supporting its dual PNP safety outputs.

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Frequently asked questions

What are the safety performance levels of the Allen-Bradley 440N-Z21U26H safety switch?

The Allen-Bradley 440N-Z21U26H safety switch is designed to meet stringent safety standards, achieving SIL 3 (Safety Integrity Level 3), PLe (Performance Level e), and Cat 4 (Category 4) performance levels. This ensures a high degree of safety for personnel and equipment.