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Allen Bradley 440K-C21052 Guardmaster Cadet 3 Tongue Interlock

Allen Bradley 440K-C21052 Guardmaster Cadet 3 Tongue Interlock.

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ManufacturerAllen Bradley

Part number440K-C21052

Actuator Flat

Connection Type M16 Conduit

Contact Configuration 2 NC Safety, 1 NO Aux

Contact Type Make Before Break (or Break Before Make - verify)

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12-month warranty

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Veteran-owned

CAGE: 9NK75

2 NC Safety Contacts 1 NO Auxiliary Contact Flat Actuator M16 Conduit Terminal Robust Design

Product description

The Allen Bradley 440K-C21052 is a Guardmaster Cadet 3 Tongue Interlock Switch designed for reliable safety applications. It offers 2 Normally Closed (NC) safety contacts and 1 Normally Open (NO) auxiliary contact. This model features a flat actuator and M16 Conduit connection. Note: Some sources indicate Make Before Break contact type, while others specify Break Before Make, verify specific application needs.

This interlock switch is essential for safeguarding machinery by ensuring guards are closed before operation. It is widely used in manufacturing and automation to prevent access to hazardous zones during machine cycles, thereby enhancing worker safety.

Stanlo Automation, your trusted veteran-owned surplus parts distributor, carries the Allen Bradley 440K-C21052. We are committed to providing quality automation components and reliable service to meet your industrial needs.

Technical specifications

Actuator	Flat
Connection Type	M16 Conduit
Contact Configuration	2 NC Safety, 1 NO Aux
Contact Type	Make Before Break (or Break Before Make - verify)
Standard	C-TICK,CCC,KC

Common applications

Machine Guarding

Industrial Automation

Manufacturing Safety

Access Control

Compatible systems

Compatible with safety control systems requiring tongue interlock functionality.

Also known as

Allen Bradley 440K-C21052 Guardmaster

Replaces / compatible with

This switch is part of the Guardmaster Cadet 3 series and is designed to monitor the position of machine guards.

Technical note

Expert tip

While some sources indicate Make Before Break, standard safety interlock applications typically require Break Before Make; confirm the contact type for your specific safety requirements.

What happens next?

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Confirms your part's spec and condition

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Tailored to your specific requirements

Frequently asked questions

What is the difference between Make Before Break and Break Before Make for the 440K-C21052?

Make Before Break (MBB) ensures a connection is made before the old one is broken, useful in some sequencing. Break Before Make (BBM) ensures the circuit is broken before a new one is made, providing a definite separation for safety. It's crucial to verify which type is specified for your safety application.