Allen Bradley 150-C251NBD SMC-3 Soft Starter – 75kW (251A) 200–480V, 3-Phase, 100–240V AC Control, Open Type Motor Controller

The Allen Bradley 150-C251NBD is a high-capacity SMC-3 soft starter designed to provide controlled motor acceleration and deceleration while reducing electrical and mechanical stress. With a 251A rated continuous operating current and support for 200–480V 3-phase supply systems, this unit can start motors up to 75kW at 400V, making it suitable for heavy-duty and high-inertia industrial applications.

Featuring a 100–240V AC control input, 3-wire control logic, and integrated electronic motor overload protection, the 150-C251NBD provides reliable and repeatable performance in pumps, conveyors, compressors, crushers, agitators, blowers, and continuous process plant equipment.

Technical Specifications

Model: 150-C251NBD Allen Bradley
Brand: Allen Bradley
Series: SMC-3 Soft Starters
Type: Solid-State 3-Wire Soft Starter
Rated Motor Power: 75 kW (at 400 V)
Rated Operating Current: 251 A
Rated Operating Voltage (Ue): 200–480 V AC, 3-Phase
Control Voltage: 100–240 V AC
Frequency: 50/60 Hz
Ideal For: Pumps, conveyors, crushers, mixers, blowers, and continuous heavy-duty industrial use

Electrical Specifications

• Voltage Range: 200–480 V AC, 3-Phase
• Rated Current: 251 A continuous
• Motor Rating: 75 kW at 400 V
• Control Voltage: 100–240 V AC
• Control Logic: 3-wire Start/Stop
• Overload Protection: Integrated electronic thermal protection
• Additional Protection: Phase loss, stall detection, undervoltage monitoring
• Ramp Control: Fully adjustable soft start and stop profiles

Mechanical Specifications

• Mounting Style: Panel-mount (Open Type)
• Chassis Construction: Robust industrial open-frame for cabinet installation
• Cooling Method: Forced or natural ventilation depending on enclosure configuration
• Power Terminals: Heavy-duty screw clamp lugs
• Protection Rating: IP2X (when installed in a proper control cabinet)

Environmental Specifications

• Max Ambient Temperature: 50°C without derating
• Humidity: 5–95% RH, non-condensing
• Altitude: Up to 1,000 m without derating
• Application Category: Heavy industrial continuous-duty environments

Compliance & Certifications

• CE Marked: Yes
• UL / cUL Listed: Yes
• RoHS Compliant: Yes
• Standards: IEC / EN 60947-4-2, IEC / EN 60947-1

Key Features & Benefits

✅ High Current Capability. Suitable for continuous-duty loads up to 251A.

✅ Smooth Start & Stop Control. Reduces stress on gear trains, belts, couplings, and pumps.

✅ Integrated Overload Protection. Removes need for an external overload relay.

✅ 100–240V Control Input. Easily interfaces with automation and control panels.

✅ Built for Harsh Environments. Reliable performance in demanding industrial settings.

✅ Backed by Allen Bradley Quality. Proven engineering trusted worldwide.

📦 Order the Allen Bradley 150-C251NBD from Drive Outlet Megastore

At Drive Outlet Megastore we offer unbeatable Allen Bradley 150-C251NBD prices, with fast delivery and full technical support across the UK and Europe.

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