55kw HP 575 V Braking Module For Vfd · Delta Electronics VFDB5055
Delta Electronics VFDB5055 is a 575V braking module for compatible Delta AC motor drives, with a maximum motor capacity of 55 kW. It is used with a suitable braking resistor to absorb regenerated energy during deceleration in industrial stop-start applications.
What this product is for
The VFDB5055 is a braking module for compatible 575V Delta AC motor drives. It helps manage regenerated energy during motor deceleration by working with an external braking resistor, supporting controlled stopping in industrial drive systems.
Use for
Use for conveyors, fans, pumps, machine tools, and other equipment where a Delta VFD needs faster or more controlled deceleration than the drive alone can provide. Commonly used where repeated stopping or overvoltage during decel is a concern.
Avoid for
Avoid using this module as a standalone braking device or without a correctly selected braking resistor. It is not for general power distribution use, and it should not be applied to non-compatible drives or voltage classes.
Best for
Best for 575V industrial VFD installations up to 55 kW where controlled deceleration, reduced nuisance overvoltage trips, and repeat stop-start duty are required.
Installed in
Typically installed in industrial control panels and drive cabinets in manufacturing plants, process equipment, material handling systems, and OEM machinery. The unit is wall-mounted in an upright position with clearance for heat dissipation.
Why this product exists
When a motor decelerates, regenerated energy can raise DC bus voltage in the drive. This braking module diverts that energy to a dedicated resistor so the drive can decelerate more effectively and operate with better control in demanding applications.
Typical buying guidance: if your application has frequent decel cycles or overvoltage faults during stopping, a brake module and correctly matched resistor are commonly used to improve braking performance. Actual performance depends on drive programming, resistor selection, duty cycle, installation conditions, and local electrical code.
Compared with similar products
Compared with smaller VFDB series units, the VFDB5055 is the 575V model in this group with a higher maximum motor capacity of 55 kW, higher 10% ED discharge current, and a lower minimum equivalent resistor requirement than some lower-capacity variants. It is intended for larger 575V Delta drive applications that need external dynamic braking.
Specifications
- Manufacturer: Delta Electronics
- Manufacturer part number: VFDB5055
- Product type: VFD braking module / brake unit
- Compatible drive voltage: 575V series
- Maximum motor capacity: 55 kW
- Maximum discharge current: 60 A at 10% ED
- Continuous discharge current: 20 A
- Braking start-up voltage: 950 VDC plus or minus 8V
- Input rating: 607 to 1000 VDC
- Minimum equivalent resistor for each braking unit: 15.8 ohm
- Installation location: Indoor
- Operating temperature: -10 deg C to +50 deg C (14 deg F to 122 deg F)
- Storage temperature: -20 deg C to +60 deg C (-4 deg F to 140 deg F)
- Humidity: 90% non-condensing
- Enclosure / construction: Wall-mounted enclosed type, IP50
- Certifications noted in source material: UL and cUL
- Typical mounting clearance: 60 mm top, 30 mm side, 20 mm bottom, 0 mm back (approximately 2.4 in top, 1.2 in side, 0.8 in bottom)
- Typical wiring guidance from source sheet: for 15 to 55 kW systems, maximum wiring distance is 10 m (32.8 ft) on one side and 5 m (16.4 ft) on the brake resistor side, depending on layout shown by the manufacturer
- Operating Temperature-10 deg C to +50 deg C (14 deg F to 122 deg F)
- Storage Temperature-20 deg C to +60 deg C (-4 deg F to 140 deg F)
- Installation LocationIndoor
- BrandsDelta Electronics
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