Configured for three-phase induction motor acceleration and pump hydraulic control in industrial distribution networks, the Allen-Bradley 150-F43NBRB (150-F43NBRB Solid-State Soft Starter) provides direct physical/electrical execution. It handles a continuous operational current rating of 43 A across line voltages spanning 200 to 480 VAC. The integrated micro-controller regulates voltage ramps to eliminate mechanical shock on drivetrain assemblies and prevent fluid hammer effects during motor startup and shutdown sequences.

Model Suffix Engineering Breakdown

• 150-F: Identifies the Bulletin 150 SMC Flex solid-state motor controller product line.
• 43: Represents the 43 A nominal current rating for standard inline load configurations.
• N: Designates an Open Enclosure IP00 unit intended for panel integration.
• B: Denotes an operating voltage range of 200...480 VAC, 3-Phase, at 50/60 Hz.
• R: Indicates a control voltage rating of 230...240 VAC (50/60 Hz).
• B: Specifies factory integration of the dedicated Pump Control option module.

Core Electrical & Physical Data

EtherNet/IP & Deterministic Backplane Execution

The controller interfaces directly with Allen-Bradley ControlLogix and CompactLogix architectures via optional DPI communication modules. Fieldbus integration enables deterministic network polling over EtherNet/IP platforms, ensuring rapid instruction execution and real-time power telemetry feedback. The internal control bus uses high-speed firmware flash compatibility routines to synchronize firing pulses across internal silicon-controlled rectifiers (SCRs), mitigating harmonic distortion and network voltage sags during initial high-torque starting phases.

Package Contents & Ordering Info

• 1 x Allen-Bradley 150-F43NBRB SMC Flex Controller Unit
• 1 x Factory-installed Pump Control Option Board
• 1 x Protective Terminal Shield Cover
• 1 x Printed Mounting and Safety Instruction Sheet

Physical Installation & Enclosure Mounting Rules

• Mount the unit vertically on a flat, rigid vertical surface within an IP54 or higher rated protective enclosure.
• Maintain a minimum clearance of 150 mm above and below the chassis to enable unobstructed convective heat dissipation.
• Route control logic wire harnesses separately from main 3-phase power line cables to eliminate inductive noise coupling.
• Connect the earth grounding lug directly to the central panel ground bus bar using a low-impedance conductor.

Frequently Asked Questions

• What input control voltage range does the 150-F43NBRB require?

  The control terminal block requires a dedicated 230...240 VAC single-phase power supply at 50/60 Hz for internal logic and gate drive circuits.

• How does the integrated pump control feature function?

  It applies specialized deceleration algorithms to control starting and stopping ramp times, preventing fluid surge and water hammer in piping networks.

• Can this soft starter be connected in an inside-delta configuration?

  Yes, the controller supports both standard inline wiring setups and inside-delta configurations for increased power handling.

• Is the enclosure suitable for direct outdoor exposure?

  No, this unit features an Open IP00 frame design and must be housed within a suitable protective industrial enclosure.

• What primary protection features are embedded in the controller?

  It includes electronic motor overload protection, SCR short circuit detection, phase unbalance monitoring, and over-temperature limits.

• Does the unit require an external bypass contactor?

  No, the SMC Flex includes internal power bypass contacts that close after full voltage output is reached to lower thermal losses.

• What is the maximum operating ambient temperature for full rating?

  The controller operates at its full rated output current in ambient temperatures ranging from 0 up to 50 deg C without derating.

• How are fault conditions cleared on this soft starter?

  Faults are cleared by toggling the physical reset terminal input, cycling control power, or issuing a software reset via network communication.