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Allen Bradley 440N-Z21X16H Guardmaster Non-Contact Switch

Allen Bradley 440N-Z21X16H Guardmaster Non-Contact Safety Switch

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ManufacturerAllen Bradley

Part number440N-Z21X16H

Actuator No Actuator (requires external coded actuator)

Contact Configuration 2 NC Safety, 1 NO Aux

Contact Type Solid State Contacts

Connection Type 8-Pin Micro (M12) Connector

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2 NC safety contacts 1 NO auxiliary contact Solid state contacts 8-Pin Micro (M12) connector Part of SensaGuard family Requires coded actuator

Product description

The Allen Bradley 440N-Z21X16H is a Guardmaster 440N Non-Contact Safety Switch featuring an 8-Pin Micro (M12) connector. This model is equipped with 2 Normally Closed (NC) safety contacts and 1 Normally Open (NO) auxiliary contact, utilizing solid-state contact technology. It is designed without a specific actuator (No Actuator), implying it relies on an external coded actuator for sensing, and is part of the SensaGuard product family.

This non-contact safety switch is essential for safeguarding machinery by monitoring the status of protective barriers. Its design allows for integration into various safety circuits, providing a critical safety function in manufacturing, packaging, and other industrial automation environments. The switch's ability to detect the presence or absence of the correct actuator ensures that guards remain closed during hazardous operations.

Stanlo Automation, a veteran-owned surplus industrial parts distributor, offers the Allen Bradley 440N-Z21X16H. We provide high-quality surplus components, enabling you to maintain your automation systems efficiently and economically. Trust Stanlo Automation for reliable access to essential safety components like this non-contact switch.

Technical specifications

Actuator	No Actuator (requires external coded actuator)
Contact Configuration	2 NC Safety, 1 NO Aux
Contact Type	Solid State Contacts
Connection Type	8-Pin Micro (M12) Connector
Material	Plastic
Product Family	SensaGuard
Standards	CCC, KC

Common applications

Machine Guard Monitoring

Safety Gate Interlocking

Access Control Systems

Industrial Automation

Manufacturing Safety

Packaging Machinery

Compatible systems

Designed for integration with Allen-Bradley safety controllers and relays. Requires a compatible coded actuator from the Guardmaster or SensaGuard series for proper function.

Also known as

Allen Bradley SensaGuard 440N 440N Series Non-Contact Switch Rockwell Automation 440N-Z21X16H

Replaces / compatible with

This switch is part of the Allen Bradley 440N series and is designed to work with compatible coded actuators. It serves as a replacement for similar non-contact switches within the Guardmaster and SensaGuard product lines.

Technical note

Expert tip

The SensaGuard family, including the 440N-Z21X16H, often utilizes RFID coded actuators for enhanced tamper resistance and safety system integrity. Ensure the actuator used is from the compatible SensaGuard series.

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Frequently asked questions

Does the Allen Bradley 440N-Z21X16H come with an actuator?

No, the Allen Bradley 440N-Z21X16H is designed to be used with a separate, compatible coded actuator. This allows for flexible integration into safety systems that require specific magnetic coding for enhanced security.