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Allen Bradley 440E-L22BNST Guardmaster Solenoid Interlock Switch

Allen Bradley 440E-L22BNST Guardmaster solenoid interlock switch, NEMA 4, 13; IP66.

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ManufacturerAllen Bradley

Part number440E-L22BNST

Enclosure Rating NEMA 4, 13

Ingress Protection IP66

Type Solenoid Interlock Switch

Series 440E Guardmaster

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Solenoid locking for safety NEMA 4, 13 enclosure IP66 rated High-reliability interlock Durable industrial construction

Product description

The Allen Bradley 440E-L22BNST is a robust Guardmaster safety switch incorporating solenoid interlock technology. Built for harsh industrial settings, it meets NEMA 4, 13 and IP66 standards, offering excellent resistance to dust, water, and corrosive environments. The solenoid ensures that guards remain locked during hazardous operations.

This safety switch is essential for machinery where unintended access must be prevented during operation, commonly found in automotive production, packaging lines, and complex automation systems. It provides an additional layer of protection by delaying guard opening until the machine is in a safe state.

Stanlo Automation, your trusted veteran-owned surplus industrial parts distributor, offers the Allen Bradley 440E-L22BNST. We are committed to providing quality components with efficient service to help you maintain operational continuity and safety.

Technical specifications

Enclosure Rating	NEMA 4, 13
Ingress Protection	IP66
Type	Solenoid Interlock Switch
Series	440E Guardmaster

Common applications

Machine guarding

Industrial safety systems

Automated manufacturing

Packaging machinery

Robotic cells

Conveyor systems

Compatible systems

Compatible with Allen Bradley Guardmaster actuators and safety control systems; requires appropriate solenoid control voltage

Also known as

Allen Bradley 440E-L22BNST Guardmaster 440E solenoid safety switch AB 440E-L22BNST

Replaces / compatible with

The 440E-L22BNST is suitable for replacing existing solenoid interlock switches or for upgrading machine safety. It is designed to integrate with Allen Bradley safety control architectures.

Technical note

Expert tip

When used in safety-critical applications, ensure the solenoid's de-energize-to-trip function is correctly wired into the safety control circuit for fail-safe operation.

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Frequently asked questions

What makes the Allen Bradley 440E-L22BNST a solenoid interlock switch?

The 440E-L22BNST is a solenoid interlock switch because it uses an electrically controlled solenoid to lock the guard mechanism. This prevents the guard from being opened until the solenoid is de-energized, ensuring a safe operating state.