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Allen Bradley 440F-C252D Guardmaster SafeEdge Controller - 24V AC/DC

Allen Bradley 440F-C252D Guardmaster SafeEdge Safety Controller

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ManufacturerAllen Bradley

Part number440F-C252D

Part Number 440F-C252D

Manufacturer Allen Bradley

Type Guardmaster SafeEdge Control Unit

Voltage 24V AC/DC

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Veteran-owned

CAGE: 9NK75

SAFE EDGE input NO safety output NC auxiliary output 24V AC/DC operation Category 3 rated DIN rail mountable

Product description

The Allen-Bradley 440F-C252D is a Guardmaster SafeEdge control unit designed for safety-sensitive applications. It operates on 24V AC/DC and features one SAFE EDGE input and one safety output, along with a normally closed auxiliary relay output. This unit is DIN rail mountable and rated for Category 3 safety.

This safety controller is ideal for use with pressure-sensitive safety edge systems on moving machine guards to prevent accidents. It is commonly applied in industries such as automotive manufacturing, material handling, and packaging, where automated machinery requires reliable safety interlocks.

Stanlo Automation, a veteran-owned surplus parts distributor, offers the Allen-Bradley 440F-C252D. We provide competitive pricing and efficient service to keep your safety systems are operational with minimal downtime.

Technical specifications

Part Number	440F-C252D
Manufacturer	Allen Bradley
Type	Guardmaster SafeEdge Control Unit
Voltage	24V AC/DC
Safety Input	1 x SAFE EDGE
Safety Output	1 x NO
Auxiliary Output	1 x NC
Safety Rating	Category 3
Mounting	DIN Rail
Reset Type	Automatic/Manual

Common applications

Safety edge systems

Moving machine guards

Automated doors

Material handling

Packaging machinery

Robotics

Compatible systems

Safedge Pressure Sensitive Safety Edge Systems

Also known as

SECD252, Allen Bradley SafeEdge Controller, Guardmaster Safety Relay

Replaces / compatible with

The 440F-C252D is part of the Allen Bradley Guardmaster SafeEdge system. Consult Rockwell Automation documentation for specific system compatibility and accessory recommendations.

Technical note

Expert tip

Ensure the correct end-of-line resistor is used with the Safedge profile to maintain circuit integrity and proper function.

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Frequently asked questions

What type of safety features does the Allen Bradley 440F-C252D offer?

The Allen Bradley 440F-C252D is a Category 3 safety controller with one SAFE EDGE input and one NO safety output. It also includes a NC auxiliary relay output for status monitoring.