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Allen Bradley 150-S251NUD Smart Guard 2000 Safety Relay

Allen Bradley Smart Guard 2000 safety relay with 24VDC input and manual reset.

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ManufacturerAllen Bradley

Part number150-S251NUD

Input Voltage 24VDC

Fault Contacts 2 NO

Reset Type Manual

Series Smart Guard 2000

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Veteran-owned

CAGE: 9NK75

24VDC coil 2 NO safety outputs Manual reset input Monitors safety devices Compact and reliable

Product description

The Allen Bradley 150-S251NUD is a Smart Guard 2000 safety relay featuring a 24VDC input voltage. This model is equipped with two normally open (NO) fault contacts for safety outputs and one normally closed (NC) contact for manual reset functionality.

This safety relay is integral to safety control systems, commonly found in automated manufacturing environments. It is utilized for applications requiring monitored safety devices like safety mats, proximity sensors, and two-hand controls, ensuring operator and machine protection.

Stanlo Automation, a proud veteran-owned surplus distributor, provides the 150-S251NUD. We focus on delivering quality surplus industrial automation parts with dependable service to minimize downtime for your business.

Technical specifications

Input Voltage	24VDC
Fault Contacts	2 NO
Reset Type	Manual
Series	Smart Guard 2000

Common applications

Machine safety

Emergency stop systems

Safety interlocks

Production line safety

Automated assembly

Compatible systems

Suitable for use with manual reset safety circuits and compatible safety input devices.

Also known as

Allen Bradley 150S251NUD Smart Guard 2000 150-S251NUD AB 150-S251NUD relay

Replaces / compatible with

Designed as a reliable replacement for Allen Bradley safety relay circuits requiring a manual reset function and two NO fault contacts. Compatible with other Smart Guard 2000 series components.

Technical note

Expert tip

The manual reset function requires a specific wiring configuration to ensure it only engages after all safety input conditions have been met.

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Frequently asked questions

What is the reset type for the Allen Bradley 150-S251NUD safety relay?

The Allen Bradley 150-S251NUD safety relay is designed for manual reset. It features a specific NC contact for integration into manual reset safety circuits.