Allen-Bradley 150-C251NBD

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Allen-Bradley 150-C251NBD SMC-3 Motor Controller / Soft Starter

Overview

The Allen-Bradley 150-C251NBD is an advanced SMC-3 solid-state motor controller built for the efficient soft starting of 3-phase induction motors. With a current capacity of 251 amps and capable of handling 480V line voltage, it is perfect for challenging industrial settings. The unit features a universal control voltage range of 100–240V AC and is designed with open-type construction for straightforward integration into control panels.

Key Features

Rated Operational Current: 251 Amps
Input Line Voltage: Up to 480V AC, 3-Phase, 50/60 Hz
Control Voltage Range: 100–240V AC
3-Wire Control Configuration
Open Type Construction
Built-in motor overload and short-circuit protection
Diagnostic LEDs for status and fault monitoring
Compact footprint for panel-mounted applications

Technical Specifications

Manufacturer: Allen-Bradley / Rockwell Automation
Part Number: 150-C251NBD
Series: SMC-3
Rated Current: 251A
Input Voltage: 200–480V AC
Control Voltage: 100–240V AC
Frequency: 50/60 Hz
Control Type: 3-Wire
Enclosure Type: Open (IP20)
Mounting: Panel Mount
Ambient Operating Temperature: 0°C to 60°C (32°F to 140°F)
Certifications: UL, CE, CSA, C-Tick

Applications

High-inertia Fan Systems
Large Water and Sewage Pumps
Industrial Compressors
Conveyor Drives
HVAC Blower Motors

Benefits

Minimizes mechanical wear with controlled start/stop
Reduces energy demand during motor startup
Simplifies integration with standard control systems
Supported by Allen-Bradley’s global reliability and compatibility

Order with Confidence

The 150-C251NBD SMC-3 soft starter is available and ready to ship globally. Request your quote today.

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