Allen-Bradley 150-F43NBR SMC Flex Solid State Motor Controller

Gain precise control and protection for your industrial motors. The Allen-Bradley 150-F43NBR is a solid-state controller (soft starter) designed for smooth operation. It manages motors up to 30 HP, reducing startup stress with multiple control modes. The reliable 150-F43NBR helps extend equipment life and prevent downtime.

Core Benefits of This Controller:

• Gentle Motor Start: Minimizes inrush current and mechanical shock during startup.
• Flexible Control: Offers Soft Start, Current Limit, Dual Ramp, and Full Voltage start modes.
• Compact Low-Voltage Control: Uses standard 24V AC/DC control power for easy integration.
• Onboard Programming: Built-in keypad and LCD display for easy setup without extra tools.
• Robust Protection: Provides electronic overload protection with thermal memory.

Complete Product Specifications

Brand: Allen-Bradley (Rockwell Automation)

Series: SMC-Flex Solid State Controller

Model: 150-F43NBR

Rated Current: 43 Amperes

Horsepower Rating: 30 HP @ 460V AC

Input Power: 200-460V AC, 3-Phase, 50/60 Hz

Control Voltage: 24V AC or DC

Enclosure Type: Open (Must be panel-mounted)

Starting Modes: Soft Start, Current Limit, Dual Ramp, Full Voltage, Preset Slow Speed, Soft Stop

Kickstart Feature: Selectable kickstart pulse available in several modes.

User Interface: Integrated LCD Display and Keypad

Optional Interface: Compatible with HIM (Human Interface Module)

Motor Compatibility: Standard 3-Phase Squirrel Cage or 6-Lead Wye-Delta Motors

Protection: Electronic Overload Protection with Thermal Memory

Safety Recommendation: Requires a line-side isolator or circuit breaker.

Product Weight: 6.80 kg (15.00 lbs)

Installation & Wiring Instructions

Install the 150-F43NBR inside a suitable industrial control panel. Ensure proper spacing for cooling. Always install a fused disconnect switch or circuit breaker on the LINE side input for safety. Connect the 3-phase mains power (200-460V AC) to the input terminals. Wire the motor to the load terminals. Connect the 24V AC or DC control power supply. Use the onboard keypad to configure start parameters and motor full load current (FLA) for proper protection.

Our Warranty Promise

This Allen-Bradley product is guaranteed with a 12-month warranty from the date of purchase, covering any manufacturing defects.

Professional FAQs

What is the "thermal memory" feature?

It tracks motor heating over time, even during power outages. This prevents a hot motor from restarting too soon and ensures accurate overload protection based on actual thermal conditions.

When should I use the "Kickstart" function?

Use it for applications with high breakaway friction, like conveyor belts or compressors. It provides an initial torque jolt to overcome static resistance before the main soft-start ramp begins.

Can I use DC control power?

Yes, the 150-F43NBR accepts both 24V AC and 24V DC control power, offering wiring flexibility for your control cabinet design.

Why is a line-side isolator mandatory?

It provides a safe means to de-energize the controller for maintenance, protecting personnel. It also protects the controller from upstream electrical faults.

How do I set the motor Full Load Amps (FLA)?

This is a critical setup step. Enter the exact FLA from the motor nameplate using the built-in keypad. This ensures the electronic overload and current-based functions work correctly.

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