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Allen Bradley 440N-Z21W1PA Guardmaster Non-Contact Switch 3M Cable

Allen Bradley 440N-Z21W1PA Guardmaster Non-Contact Safety Switch

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ManufacturerAllen Bradley

Part number440N-Z21W1PA

Actuator Standard

Connection Type 3 M Cable

Contact Configuration 2 NC Safety, 1 NO Aux

Contact Type Solid State Relay

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12-month warranty

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Veteran-owned

CAGE: 9NK75

2 NC safety contacts 1 NO auxiliary contact Solid state relay technology 3-meter PVC cable Standard actuator High tolerance to misalignment

Product description

The Allen Bradley 440N-Z21W1PA is a Guardmaster 440N Non-Contact Safety Switch designed for reliable machine safety applications. It features a standard actuator and provides 2 Normally Closed (NC) safety contacts and 1 Normally Open (NO) auxiliary contact, utilizing solid-state relay technology. This model comes with a 3-meter (3M) PVC cable for connection and operates within a voltage range of 20.4-26.4 VDC.

This non-contact safety switch is essential for monitoring the position of guards, doors, and access panels on industrial machinery. Its high tolerance to misalignment and magnetic coded sensing ensure dependable operation even in demanding environments. It is widely used in manufacturing, packaging, and material handling industries where ensuring machine safety and preventing unauthorized access to hazardous areas is critical.

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Technical specifications

Actuator	Standard
Connection Type	3 M Cable
Contact Configuration	2 NC Safety, 1 NO Aux
Contact Type	Solid State Relay
Voltage	20.4-26.4 VDC
Material	Plastic
Standards	CCC, CUL, KC, UL

Common applications

Machine Guard Monitoring

Safety Gate Interlocking

Access Panel Safety

Industrial Automation

Packaging Machinery

Material Handling Equipment

Compatible systems

Designed for use with specified Allen-Bradley controllers and safety relays. Verify compatibility with your existing safety system architecture.

Also known as

Allen Bradley Guardmaster 440N 3M Cable 440N Series Non-Contact Switch Rockwell Automation 440N-Z21W1PA

Replaces / compatible with

This switch is part of the Allen Bradley 440N series and is designed to provide reliable safety interlocking. It can replace other 440N series switches with similar contact configurations and cable lengths.

Technical note

Expert tip

Ensure the 3-meter cable length is adequate for your installation to prevent strain or damage. Proper cable management is recommended to maintain the IP rating and operational integrity.

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Frequently asked questions

What type of contacts does the Allen Bradley 440N-Z21W1PA use?

The Allen Bradley 440N-Z21W1PA utilizes Solid State Relay contacts. It provides two Normally Closed (NC) safety contacts and one Normally Open (NO) auxiliary contact, ensuring dependable switching for safety applications.