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Allen Bradley

Allen Bradley 440N-Z18PT GuardMaster Safety Switch

Allen Bradley 440N-Z21S16B GuardMaster safety switch.

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ManufacturerAllen Bradley

Part number440N-Z21S16B

Part Number 440N-Z21S16B

Manufacturer Allen Bradley

Series GuardMaster

Contact Type Z-S16B

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Reliable machine guarding interlock Z-S16B contact 18mm sensor head GuardMaster series Robust industrial design

Product description

The Allen Bradley 440N-Z21S16B is a GuardMaster safety switch featuring a Z-S16B contact and an 18mm sensor head. It is designed to provide robust and reliable interlocking for machine safety applications, ensuring personnel are protected by preventing machinery operation when guards are not properly secured.

This safety switch is commonly used in industrial environments such as manufacturing plants, automotive assembly, and packaging lines. Its applications include protecting operators from hazardous moving parts on machinery like conveyors, presses, and robotic work cells.

Stanlo Automation, a veteran-owned distributor of industrial surplus parts, offers the 440N-Z21S16B. We provide access to quality components, enabling you to maintain and repair your automation equipment efficiently and cost-effectively.

Technical specifications

Part Number	440N-Z21S16B
Manufacturer	Allen Bradley
Series	GuardMaster
Contact Type	Z-S16B
Sensor Head Diameter	18mm

Common applications

Machine Guarding

Safety Interlocks

Industrial Manufacturing

Assembly Lines

Packaging Machinery

Automation Systems

Compatible systems

Allen Bradley GuardMaster Actuators Industrial Safety Control Systems

Also known as

Allen Bradley 440N-Z21S16B GuardMaster 440N-Z21S16B Safety Interlock Switch 440N-Z21S16B

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 (sold separately) that is designed to align precisely with the switch for proper functioning.

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Frequently asked questions

What is the function of the Z-S16B contact in the Allen Bradley 440N-Z21S16B safety switch?

The Z-S16B contact in the Allen Bradley 440N-Z21S16B safety switch serves as the critical component for detecting the position of the guard actuator. When the actuator is inserted, the contact is made, signaling to the machine control that it is safe to operate.