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Allen Bradley 440G-T27177 TLS-GD2 Guardlock Switch

Allen Bradley 440G-T27177: Guardmaster TLS-GD2 Guardlock Switch

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ManufacturerAllen Bradley

Part number440G-T27177

Actuator Fully Flex

Contacts (Safety/Auxiliary) 2 NC, 1 NO

Solenoid Voltage 24V AC/DC

Function Power to Lock

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12-month warranty

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Veteran-owned

CAGE: 9NK75

Fully Flex Actuator Power to Lock Function 2 NC Safety Contacts 1 NO Aux Contact 24V AC/DC Solenoid High Locking Force (2000N)

Product description

The Allen Bradley 440G-T27177 is a Guardmaster TLS-GD2 Guardlock Switch featuring a fully flexible actuator and a 'Power to Lock' function. It is equipped with two normally closed (NC) safety contacts and one normally open (NO) auxiliary contact. The solenoid operates on 24V AC/DC, and the unit includes M20 conduit with a 1/2in NPT adapter for connections. Manufactured to high standards (CCC, CE, CUL, KC, UL), this plastic-housed switch is built for reliable safety interlocking.

This guardlock switch is designed to secure machine guards, preventing operation while access points are open. Its fully flexible actuator and 'Power to Lock' mechanism are ideal for applications where immediate locking upon guard closure is required. The switch is suitable for industries such as automotive manufacturing, material handling, and heavy machinery operations where personnel safety is critical and harsh environments are common.

Stanlo Automation specializes in providing high-quality surplus industrial automation components, including the Allen Bradley 440G-T27177. As a veteran-owned company, we are dedicated to offering dependable parts and exceptional service to minimize your downtime and ensure the safety of your operations. Trust Stanlo Automation for your industrial needs.

Technical specifications

Actuator	Fully Flex
Contacts (Safety/Auxiliary)	2 NC, 1 NO
Solenoid Voltage	24V AC/DC
Function	Power to Lock
Connection Type	M20 Conduit, 1/2in NPT Adapter
Material	Plastic
Standards	CCC, CE, CUL, KC, UL

Common applications

Machine Guarding

Industrial Safety

Manufacturing

Material Handling

Heavy Machinery

Automation

Compatible systems

Safety Relays PLC Systems Control Panels

Also known as

Allen Bradley 440G-T27177 Guardmaster TLS-GD2 Guardlock Switch 440G-T27177 Safety Interlock

Replaces / compatible with

Part of the robust Allen-Bradley TLS-GD2 series, this switch provides advanced safety interlocking solutions for machine guarding.

Technical note

Expert tip

The fully flexible actuator on the 440G-T27177 allows for easier alignment and operation, even with slight guard misalignments, reducing wear and tear.

What happens next?

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Frequently asked questions

What is the 'Power to Lock' feature of the Allen Bradley 440G-T27177?

The 'Power to Lock' function means the guard remains locked as long as power is supplied to the solenoid. The lock is released only when power is removed, ensuring the guard stays secured during operation.