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Allen Bradley 440N-Z21US3PH Guardmaster Magnetic Latch Switch

Allen Bradley 440N-Z21US3PH Guardmaster Non-Contact Safety Switch

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ManufacturerAllen Bradley
Part number440N-Z21US3PH
Actuator Integrated Magnetic Latch
Contact Configuration 2 NC Safety, 1 NO Aux
Contact Type Solid State Contacts
Voltage 24 VDC
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Integrated magnetic latch 2 NC safety contacts 1 NO auxiliary contact Solid state contacts 24 VDC operation 8-Pin DC QD connector

The Allen Bradley 440N-Z21US3PH is a Guardmaster 440N Non-Contact Safety Switch distinguished by its integrated magnetic latch. This feature provides an additional layer of security by requiring a specific actuator or de-energization to release. It is equipped with 2 Normally Closed (NC) safety contacts and 1 Normally Open (NO) auxiliary contact, both utilizing solid-state technology for dependable performance. The switch operates on 24 VDC and features an 8-Pin DC QD connection type.

This magnetic latching non-contact switch is engineered for applications where personnel safety is paramount and where a guard must remain securely closed even after a stop command, such as on high-inertia machinery. It is crucial in industries like packaging, automotive assembly, and automated manufacturing where the risk of unexpected machine startup must be mitigated. The magnetic latch ensures the guard remains closed until the safe state is confirmed.

Stanlo Automation, a veteran-owned surplus parts distributor, offers the Allen Bradley 440N-Z21US3PH as a reliable solution for your safety automation needs. We provide high-quality, cost-effective surplus components, ensuring you can maintain operational efficiency without compromising safety standards. Trust Stanlo Automation for your critical safety switch requirements.

ActuatorIntegrated Magnetic Latch
Contact Configuration2 NC Safety, 1 NO Aux
Contact TypeSolid State Contacts
Voltage24 VDC
Connection Type8 Pin DC QD
Temperature Rating10 - 55 degrees C
StandardsCCC, CUL, UL
High-Inertia Machine Guarding
Packaging Machinery Safety
Automotive Assembly Lines
Automated Manufacturing
Safety Gate Interlocking with Latch
Personnel Protection
Compatible with safety relays and controllers designed to accept 24 VDC inputs and monitor NC safety contacts. Verify compatibility with specific Allen-Bradley safety controllers.
Allen Bradley Guardmaster 440N Magnetic Latch 440N Series Magnetic Safety Switch Rockwell Automation 440N-Z21US3PH
This switch is part of the Allen Bradley Guardmaster 440N series. It is designed to replace or be compatible with other 440N series switches that offer similar safety and auxiliary contact configurations.
Expert tip
The magnetic latch functionality requires careful integration with the machine's safety control system to ensure it operates correctly in all hazardous scenarios. Consult the product's technical documentation for wiring and integration guidelines.
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What is the function of the integrated magnetic latch on the 440N-Z21US3PH?
The integrated magnetic latch on the 440N-Z21US3PH is a safety feature that keeps the guard or door securely closed until a safe condition is detected or the latch is de-energized. This prevents accidental restarts of machinery.