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Allen Bradley 440G-T27178 Guardmaster TLS-GD2 Guardlock Switch

Allen Bradley 440G-T27178: Guardmaster TLS-GD2 Guardlock Switch

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ManufacturerAllen Bradley

Part number440G-T27178

Actuator Standard

Contacts (Safety/Auxiliary) 2 NC, 1 NO

Solenoid Voltage 110V AC/DC

Function Power to Lock

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12-month warranty

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Veteran-owned

CAGE: 9NK75

Standard Actuator Power to Lock Function 2 NC Safety Contacts 1 NO Aux Contact 110V AC/DC Solenoid High Locking Force (2000N)

Product description

The Allen Bradley 440G-T27178 is a Guardmaster TLS-GD2 Guardlock Switch featuring a standard 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 110V AC/DC, and it includes M20 conduit with a 1/2in NPT adapter for connections. This switch meets CCC, CE, CUL, KC, and UL standards, ensuring compliance and reliability in safety-critical applications.

This guardlock switch is designed to ensure machine guards remain closed and locked while the machine is in operation. The standard actuator and 'Power to Lock' mechanism make it suitable for a wide range of industrial machinery, including conveyors, presses, and assembly lines. Its high locking force (2000N) and IP69K rating make it resilient in harsh environments and washdown applications.

Stanlo Automation, a veteran-owned distributor, offers the Allen Bradley 440G-T27178 as part of our comprehensive inventory of industrial surplus parts. We are committed to providing our customers with high-quality components and fast, reliable service to keep your operations running smoothly and safely. Partner with Stanlo Automation for your industrial automation needs.

Technical specifications

Actuator	Standard
Contacts (Safety/Auxiliary)	2 NC, 1 NO
Solenoid Voltage	110V 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

Conveyors

Presses

Assembly Lines

Compatible systems

Control Panels Safety Systems Machine Controllers

Also known as

Allen Bradley 440G-T27178 Guardmaster TLS-GD2 Guardlock Switch 440G-T27178 Safety Interlock

Replaces / compatible with

This TLS-GD2 guardlock switch is designed as a direct replacement or upgrade for safety interlocking systems requiring reliable guard monitoring.

Technical note

Expert tip

The standard actuator for the 440G-T27178 requires precise insertion into the switch for proper operation, ensuring the guard is fully closed before locking.

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Frequently asked questions

What voltage is required for the solenoid on the Allen Bradley 440G-T27178?

The Allen Bradley 440G-T27178 uses a solenoid that operates on 110V AC/DC. This voltage is standard for many industrial control systems, ensuring broad compatibility.