Brake Resistor · 750 W 140 Ohm Dynamic Braking Accessory · Delta Electronics BR750W140
750 W, 140 Ohm braking resistor for Delta variable frequency drives and servo drive braking circuits. Commonly used to dissipate regenerated energy during deceleration; actual braking performance depends on drive sizing, duty cycle, wiring, and local installation requirements.
What this product is for
This is a 750 W, 140 Ohm brake resistor used with compatible Delta drives to absorb regenerated energy during motor deceleration. It is selected where a drive needs faster stopping or improved control of overvoltage during braking.
Use for
Use for VFD and servo applications with frequent deceleration, higher inertia loads, or stopping profiles that can push regenerated energy back into the drive. Typical applications include conveyors, fans, machinery, and motor systems that need controlled braking.
Avoid for
Avoid using this resistor as a general-purpose panel resistor or as a substitute where the drive manufacturer calls for a different resistance or wattage. Do not size by wattage alone; resistance value, duty cycle, and drive compatibility must all match the application.
Best for
Best for Delta drive installations where the specified brake resistor value is 140 Ohm and the required resistor power is 750 W. This type of resistor is commonly chosen when shorter deceleration times are needed without exceeding the drive's braking limits.
Installed in
Typically installed in industrial control panels, machine skids, OEM equipment, and automation systems using compatible Delta AC drives. Allow practical clearance for heat dissipation and follow the drive manual for mounting, wiring, and enclosure ventilation.
Why this product exists
When a motor decelerates, regenerated energy can raise DC bus voltage inside the drive. A brake resistor provides a controlled path to dissipate that energy as heat, helping the drive brake the motor more effectively and reducing nuisance overvoltage trips.
Compared with similar products
Compared with lower wattage brake resistors, this 750 W model is suited to applications with greater braking energy or more frequent deceleration. Compared with other 750 W models, the 140 Ohm resistance value is a key selection factor and must match the compatible drive requirement. As a rule of thumb, braking resistor selection should be based on the drive manual, motor size, deceleration time, and duty cycle, not on resistance alone. Actual performance depends on installation conditions, load inertia, braking frequency, and local electrical code.
Specifications
- Manufacturer: Delta Electronics
- Manufacturer part number: BR750W140
- Product type: Brake resistor
- Rated power: 750 W
- Resistance: 140 Ohm
- Application: Dynamic braking for compatible AC drives and servo drives
- ApplicationDynamic braking for compatible AC drives and servo drives
- Resistance140 Ohm
- Rated Power750 W
- BrandsDelta Electronics
- Stock in Elmira1
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