The Allen-Bradley 150-F625NBAD, also cataloged as the 150-F625 Solid-State Soft Starter, operates as a dedicated hardware component for high-current induction motor soft starting and controlled braking execution within industrial power networks. The unit supports up to 625 A continuous line current with power throughput ratings up to 355 kW inline and 630 kW inside-delta at 400 VAC. Internal silicon-controlled rectifiers (SCRs) adjust applied line phase angles to control voltage ramp rates, reducing peak electromechanical torque transients during initial system acceleration and controlled deceleration cycles.

Catalog Designation Structure

• 150-F: Specifies the Bulletin 150 SMC Flex solid-state soft starter controller platform.
• 625: Indicates the 625 A nominal continuous current rating for standard inline load wiring.
• N: Standard open enclosure structural assembly (IP00 rated) for integration in panel enclosures.
• B: Denotes input line operational voltage parameters of 200...480 VAC, 3-Phase, 50/60 Hz.
• A: Designates a control circuit operating power voltage rating of 230...240 VAC.
• D: Factory-installed internal option board enabling Smart Motor Braking (SMB) control algorithms.

Hardware Electrical Specifications

EtherNet/IP Networks & Controller Backplane Integration

The controller communicates with Logix PAC processors through optional DPI expansion interfaces, maintaining deterministic network links over EtherNet/IP backplane structures. Firmware flash compatibility across internal control modules ensures synchronous firing pulse timing across high-power SCR assemblies. Direct control bus integration allows continuous transmission of phase current metrics, operating state diagnostics, and fault condition flags to the main supervisory controller without requiring external signal conversion hardware.

Dispatch Package Components

• 1 x Allen-Bradley 150-F625NBAD Solid-State Controller Assembly
• 1 x Factory-Integrated Braking Option Card
• 1 x Set of Protective Terminal Shields
• 1 x Hardware Mounting Sheet and Installation Manual

Enclosure Mounting and Wiring Protocols

• Cabinet Mounting Requirements
  • Secure the chassis vertically on an unpainted, conductive grounding panel inside a protective NEMA or IP-rated enclosure.
  • Maintain at least 150 mm of vertical clearance above and below the assembly for unimpeded natural thermal convection.
• Electrical Cabling Limits
  • Run high-voltage 3-phase line and load power conductors in dedicated wire conduits separated from low-voltage control lines.
  • Bond the grounding lug to the enclosure ground bus bar using a low-impedance copper grounding conductor.

Frequently Asked Questions

• What is the continuous operational current rating of the 150-F625NBAD?

  The unit handles a continuous line current rating of 625 A in standard inline motor drive configurations.

• Which control supply voltage is required to power the logic board?

  The control terminal block requires a dedicated single-phase AC control voltage of 230...240 VAC at 50/60 Hz.

• What function does the internal option code D provide?

  Option code D adds an internal option board for Smart Motor Braking (SMB), supplying controlled DC injection to stop motors rapidly.

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

  Yes, it supports inside-delta wiring configurations, raising the continuous power capacity to 630 kW at 400 VAC.

• Is the open enclosure framework rated for harsh outdoor environments?

  No, the open frame IP00 enclosure must be mounted inside a suitably rated protective industrial panel cabinet.

• How are fieldbus diagnostics transmitted to central PLC controllers?

  The unit routes telemetry via optional DPI communication modules over EtherNet/IP networks directly to the PLC controller.

• Does the controller incorporate internal bypass contacts?

  Yes, internal bypass contactors close automatically upon reaching full line voltage to minimize power dissipation across the SCRs.

• How are fault logic conditions cleared after a protective shutdown?

  Faults are cleared by activating the hardware reset input terminal, cycling control supply power, or sending a network reset command.