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Allen Bradley 440N-Z21S26H GuardMaster Safety Switch

Allen Bradley 440N-Z21S26H GuardMaster safety switch.

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ManufacturerAllen Bradley

Part number440N-Z21S26H

Part Number 440N-Z21S26H

Manufacturer Allen Bradley

Series GuardMaster

Contact Type Z-S26H

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Robust safety interlock functionality Z-S26H contact 18mm sensor head GuardMaster series Designed for industrial applications

Product description

The Allen Bradley 440N-Z21S26H is a GuardMaster safety switch featuring a Z-S26H contact and an 18mm sensor head. This switch is engineered for reliable interlocking of machine guards, ensuring that machinery cannot operate when access points are compromised, thereby protecting personnel.

This safety switch is widely implemented in industrial automation, manufacturing, and assembly lines where machine guarding is critical. It is applied to robotic work cells, presses, and safety doors to prevent unauthorized access during operation.

Stanlo Automation, a veteran-owned distributor of industrial surplus parts, offers the 440N-Z21S26H. We are dedicated to providing quality, dependable components to keep your operations running efficiently and to help you source necessary parts quickly and affordably.

Technical specifications

Part Number	440N-Z21S26H
Manufacturer	Allen Bradley
Series	GuardMaster
Contact Type	Z-S26H
Sensor Head Diameter	18mm

Common applications

Machine Guarding

Safety Gates

Industrial Automation

Manufacturing

Assembly Lines

Robotic Cells

Compatible systems

Allen Bradley GuardMaster Actuators Industrial Safety Systems

Also known as

Allen Bradley 440N-Z21S26H GuardMaster 440N-Z21S26H Safety Interlock Switch 440N-Z21S26H

Replaces / compatible with

This part is part of the Allen Bradley GuardMaster series. For specific replacement information, please consult the manufacturer's documentation.

Technical note

Expert tip

The 18mm sensor head requires a specific actuator designed for proper engagement to ensure the Z-S26H contact reliably signals the guard status.

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Frequently asked questions

What is the role of the Z-S26H contact in the Allen Bradley 440N-Z21S26H safety switch?

The Z-S26H contact within the Allen Bradley 440N-Z21S26H safety switch is designed to create a secure connection within a safety circuit. When the actuator is correctly inserted, it closes the safety circuit, indicating that the guard is in a safe position. The 'H' designation may indicate specific contact behavior or reliability features.