High-Capacity Motor Braking Solution

The Fuji BU132-4E Dynamic Braking Unit Kit is an essential accessory for high-power Fuji 400V Variable Frequency Drives (VFDs). This kit is designed to efficiently dissipate the regenerative energy created when an AC motor is rapidly decelerating, ensuring quick and safe stopping of high-inertia loads without triggering VFD overvoltage faults.

The single BU132-4E unit covers two motor ratings (110kW and 132kW), but requires a specific, correctly-sized Braking Resistor (DB) to be selected below for optimal performance.

Key Features

Broad Compatibility: Works seamlessly with Fuji FRENIC-MEGA, FRENIC-ACE, and other 400V VFD series, particularly for high-power applications.
Safety and Compliance: Ensures controlled motor stops, protecting your VFD and machinery from damage.
Simple Installation: Designed for easy integration into control panels.

Technical Specifications & Component Pairing

The core BU132-4E unit is the same for both applications, but the resistance value changes to handle the different regenerative energy profiles of the 110kW and 132kW motors.

Option Selection (Kit)	BU Unit Model	Required Resistor Model	Resistance Value (?)
110kW	BU132-4E	DB110-4C	4.7
132kW	BU132-4E	DB132-4C	3.9

Outline Dimensions (BU Unit and Resistors)

Verify clearances for your control panel using the dimensions below (all measurements in millimeters).

Component	Width (mm)	Height (mm)	Depth (mm)	Weight (kg)
Braking Unit (BU132-4E)	200	450	220	12.0
Resistor (DB110-4C)	150	1400	180	30
Resistor (DB132-4C)	150	1600	180	35

Downloads

Engineering Tools

Access our range of industry-specific calculators.

Fuji BU132-4E Dynamic Braking Unit Kit

Have a question?