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Fuji Electric BU55-4E
SKU: BU55-4E
We have 3 in stock
Estimated delivery: August 9th - August 11th
Order for next-day shipment.
- Regular price
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€1.208,95
- Sale price
- €1.208,95
Default Title
€1.208,95
3 in stock
Ships today
Description
The Fuji Electric BU55-4E is an external dynamic braking unit (DBU) rated for 55 kW drive systems at 400V for use with Fuji Electric FRENIC series variable frequency drives.
When a VFD rapidly decelerates a high-inertia load, the motor becomes a generator, returning regenerative energy back to the drive's DC bus and causing the bus voltage to rise. The BU55-4E monitors the DC bus voltage and, when it rises above a set threshold, routes this regenerative energy through an external braking resistor where it is safely dissipated as heat — preventing overvoltage faults and enabling fast, controlled deceleration.
Required for large cranes, overhead hoists, winders, centrifuges, and high-inertia fan and pump systems where regenerative braking energy exceeds the drive's built-in braking transistor capacity. Must be paired with a compatible external braking resistor sized to the application's braking duty cycle and power level. Consult the drive's technical manual for braking unit and resistor selection guidelines. Genuine Fuji Electric OEM component.
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Buying Options
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Description
The Fuji Electric BU55-4E is an external dynamic braking unit (DBU) rated for 55 kW drive systems at 400V for use with Fuji Electric FRENIC series variable frequency drives.
When a VFD rapidly decelerates a high-inertia load, the motor becomes a generator, returning regenerative energy back to the drive's DC bus and causing the bus voltage to rise. The BU55-4E monitors the DC bus voltage and, when it rises above a set threshold, routes this regenerative energy through an external braking resistor where it is safely dissipated as heat — preventing overvoltage faults and enabling fast, controlled deceleration.
Required for large cranes, overhead hoists, winders, centrifuges, and high-inertia fan and pump systems where regenerative braking energy exceeds the drive's built-in braking transistor capacity. Must be paired with a compatible external braking resistor sized to the application's braking duty cycle and power level. Consult the drive's technical manual for braking unit and resistor selection guidelines. Genuine Fuji Electric OEM component.
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Need help with installation, configuration, or troubleshooting? Our technical experts are available to assist you.
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