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Allen-Bradley 440F-C251D safety limit switch, 2NC contacts, roller plunger actuator, IP67 rated, direct opening action

Allen-Bradley 440F-C251D

SKU: 440F-C251D
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$820.00
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Allen-Bradley 440F-C251D

Overview

The Allen-Bradley 440F-C251D is a Guardmaster safety limit switch designed for reliable detection in safety-critical applications. Featuring 2 normally closed (2NC) contacts, a roller plunger actuator, and direct opening action, this device ensures fail-safe operation in the event of actuator displacement or mechanical failure. With an IP67 rating, it is built to withstand harsh industrial environments.

Key Features

  • Contact Configuration: 2 Normally Closed (2NC)

  • Actuator Type: Roller Plunger

  • Direct Opening Action: Yes

  • Ingress Protection: IP67 (dust-tight and waterproof)

  • Housing Material: Thermoplastic

  • Electrical Ratings: 10A @ 240V AC

  • Certifications: CE Marked, cULus Listed, EN 60947-5-1 compliant

Technical Specifications

  • Catalog Number: 440F-C251D

  • Contact Type: Positive Opening (Direct Opening)

  • Switch Type: Safety Limit Switch

  • Actuator Travel: 18 mm pre-travel, 4 mm over-travel

  • Operating Force: Approx. 14 N

  • Ambient Temperature Range: -25°C to +70°C

  • Mechanical Life: >10 million operations

  • Mounting: Panel or machine surface mounting

  • Connection Type: Screw terminals

Applications

  • Guard door position monitoring

  • Machine tool interlocks

  • Conveyor safety systems

  • Robotics and automated systems

  • Packaging machinery

Why Choose the 440F-C251D

  • Reliable Safety Detection: Designed for critical safety applications requiring fail-safe switching

  • Durable Construction: IP67 rating provides protection in demanding environments

  • Roller Plunger Actuation: Suitable for sliding or cam-operated mechanisms

  • Direct Opening Mechanism: Ensures contacts physically open in case of actuator failure

  • Compliance: Meets international safety standards for machine guarding

Order Now

The Allen-Bradley 440F-C251D safety limit switch is in stock and available for global shipping. 

New & Genuine Products – Factory Sealed At PLCpartssolution, all our products are 100% new, genuine, and come in original factory-sealed packaging. We guarantee authentic components that meet the highest industry standards for performance and reliability.
1-Year Warranty Included All new products sold by PLCpartssolution come with a 1-year warranty. We stand behind the quality and reliability of our parts, ensuring coverage against manufacturing defects under normal operating conditions.
Disclaimer: PLCpartssolution is an independent supplier of surplus and refurbished industrial automation products. We are not an authorized distributor, reseller, or representative of the brands listed on this website. All trademarks, brand names, and logos are the property of their respective owners. PLCpartssolution is not affiliated with, endorsed by, or approved by ABB, Fanuc, B&R, Rockwell Automation, Schneider Electric, Siemens, or any other manufacturers mentioned.

Description

Allen-Bradley 440F-C251D

Overview

The Allen-Bradley 440F-C251D is a Guardmaster safety limit switch designed for reliable detection in safety-critical applications. Featuring 2 normally closed (2NC) contacts, a roller plunger actuator, and direct opening action, this device ensures fail-safe operation in the event of actuator displacement or mechanical failure. With an IP67 rating, it is built to withstand harsh industrial environments.

Key Features

  • Contact Configuration: 2 Normally Closed (2NC)

  • Actuator Type: Roller Plunger

  • Direct Opening Action: Yes

  • Ingress Protection: IP67 (dust-tight and waterproof)

  • Housing Material: Thermoplastic

  • Electrical Ratings: 10A @ 240V AC

  • Certifications: CE Marked, cULus Listed, EN 60947-5-1 compliant

Technical Specifications

  • Catalog Number: 440F-C251D

  • Contact Type: Positive Opening (Direct Opening)

  • Switch Type: Safety Limit Switch

  • Actuator Travel: 18 mm pre-travel, 4 mm over-travel

  • Operating Force: Approx. 14 N

  • Ambient Temperature Range: -25°C to +70°C

  • Mechanical Life: >10 million operations

  • Mounting: Panel or machine surface mounting

  • Connection Type: Screw terminals

Applications

  • Guard door position monitoring

  • Machine tool interlocks

  • Conveyor safety systems

  • Robotics and automated systems

  • Packaging machinery

Why Choose the 440F-C251D

  • Reliable Safety Detection: Designed for critical safety applications requiring fail-safe switching

  • Durable Construction: IP67 rating provides protection in demanding environments

  • Roller Plunger Actuation: Suitable for sliding or cam-operated mechanisms

  • Direct Opening Mechanism: Ensures contacts physically open in case of actuator failure

  • Compliance: Meets international safety standards for machine guarding

Order Now

The Allen-Bradley 440F-C251D safety limit switch is in stock and available for global shipping. 

Condition

New & Genuine Products – Factory Sealed At PLCpartssolution, all our products are 100% new, genuine, and come in original factory-sealed packaging. We guarantee authentic components that meet the highest industry standards for performance and reliability.

Warranty

1-Year Warranty Included All new products sold by PLCpartssolution come with a 1-year warranty. We stand behind the quality and reliability of our parts, ensuring coverage against manufacturing defects under normal operating conditions.

Disclaimer

Disclaimer: PLCpartssolution is an independent supplier of surplus and refurbished industrial automation products. We are not an authorized distributor, reseller, or representative of the brands listed on this website. All trademarks, brand names, and logos are the property of their respective owners. PLCpartssolution is not affiliated with, endorsed by, or approved by ABB, Fanuc, B&R, Rockwell Automation, Schneider Electric, Siemens, or any other manufacturers mentioned.
Allen-Bradley 440F-C251D

Allen-Bradley 440F-C251D

$820.00
Add to wishlist
Allen-Bradley 440F-C251D

Allen-Bradley 440F-C251D

Your Price:
$820.00
Item Added to Your Cart
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