Allen-Bradley 150-F108NCR SMC-Flex Solid State Motor Controller, 108A

Introduction

Struggling with motor starting stress and unreliable control in demanding industrial environments? The Allen-Bradley 150-F108NCR SMC-Flex solid state motor controller delivers precise, soft starting and stopping for three-phase motors up to 108 amps. Part of the trusted SMC-Flex family, this open-type controller handles 200–575V AC input at 50 or 60 Hz and offers flexible control voltage options.

Technical Specifications

The 150-F108NCR operates on a 200–575V AC three-phase input line at 50 or 60 Hz. It uses a 24V AC/DC control voltage (for 5–480 A units). The controller rating is 108 A and 75 HP at 460V AC. At a rated voltage of 500/575V AC, motor current ranges from 27 to 108 A, with maximum power of 75 kW at 50 Hz and 100 HP at 60 Hz. The unit weighs 40.00 lbs (18.14 kg) and is suitable for Wye-Delta, six-lead, and standard squirrel-cage motors.

Industry Applications

This controller excels in applications requiring smooth acceleration and deceleration to reduce mechanical shock and extend equipment life. Typical uses include conveyors, pumps, fans, compressors, and material handling systems. The 150-F108NCR supports multiple start and stop modes—dual ramp start, current limit start, preset slow speed, soft stop, soft start, full voltage, and linear speed acceleration—making it adaptable to diverse load profiles.

Installation & Setup Guidance

Mount the open-type controller in a clean, dry enclosure with adequate ventilation. Ensure the input line voltage matches the 200–575V AC three-phase supply and that the control voltage is 24V AC/DC. Connect the motor leads according to the wiring diagram for your motor type (Wye-Delta, six-lead, or squirrel-cage). Use the front keypad and backlit LCD to configure start/stop modes and monitor status indicators for faults such as undervoltage, overload, phase reversal, and jam.

Maintenance & Reliability

To maximize uptime, inspect the controller periodically for dust buildup, loose connections, and signs of overheating. The ambient temperature range for storage is –4 to 167 °F, and for operation it is 23 to 104 °F. Operating altitude should not exceed 2000 m. Regularly check the status indicators for fault alerts and verify that the control voltage remains stable. Following these simple steps helps prevent unexpected downtime and extends the service life of the 150-F108NCR.

Selection Guide & Purchasing Advice

Before purchasing, confirm that your motor's full-load current does not exceed 108 A and that your supply voltage falls within 200–575V AC three-phase. The 150-F108NCR requires a 24V AC/DC control source. For complete technical specifications, please contact BluePLC Industrial. Our team can help verify compatibility with your existing system and ensure you receive the correct unit for your application.