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Allen Bradley

Allen Bradley 440NG02123 TLS-GD2 Guard Locking Safety Switch

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ManufacturerAllen Bradley

Part number440NG02123

Operating Voltage 24V DC

Locking Principle Power-to-release

Contact Configuration 3 N.C. safety + 1 N.O. auxiliary

Holding Force 1400 N

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Veteran-owned

CAGE: 9NK75

Power-to-release locking mechanism 3 N.C. safety contacts, 1 N.O. auxiliary 24V DC operation 1400 N holding force IP67-rated metal head

Product description

The Allen-Bradley 440NG02123 is a Guard Locking Safety Interlock Switch from the TLS-GD2 series. It operates on a 24V DC power-to-release principle, featuring three normally closed (N.C.) safety contacts and one normally open (N.O.) auxiliary contact. The switch boasts a robust metal head and an IP67 enclosure rating.

This high-holding force switch (1400 N) is designed for heavy-duty safety applications, ensuring that hazardous machine access points remain securely locked until safe conditions are met. Its power-to-release function means the solenoid unlocks when energized.

Stanlo Automation, a veteran-owned surplus parts distributor, offers the Allen-Bradley 440NG02123. We provide reliable industrial automation components with competitive pricing and fast shipping worldwide.

Technical specifications

Operating Voltage	24V DC
Locking Principle	Power-to-release
Contact Configuration	3 N.C. safety + 1 N.O. auxiliary
Holding Force	1400 N
Enclosure Protection	IP67
Material	Metal head

Common applications

Machine safety doors

Hazardous area access control

Presses

Packaging machines

Robotic cells

Compatible systems

Control systems requiring 3 N.C. safety outputs and 1 N.O. auxiliary output for guard locking applications

Also known as

440NG02123 Switch TLS-GD2 Safety Switch Guard Locking Switch

Replaces / compatible with

This TLS-GD2 series switch is designed for safety interlock applications on machine guards and doors.

Technical note

Expert tip

This switch requires a specific actuator (sold separately) for proper operation and locking.

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Frequently asked questions

What is the locking mechanism of the Allen-Bradley 440NG02123?

The Allen-Bradley 440NG02123 features a 'power-to-release' locking mechanism. This means the solenoid is energized to unlock the guard, and it remains locked when de-energized, ensuring safety even during power interruptions.