Product Overview
The ABB NBRA-656C is a braking chopper that supports electric drive systems by managing the energy generated during rapid motor deceleration. In industrial applications requiring rapid deceleration of drive loads-such as conveyors, cranes, and heavy machinery-this chopper safely dissipates regenerative energy, thereby protecting drive components and maintaining process stability.
Key Functional Highlights
Frequently starting and stopping conveyor systems
Cranes and hoists with controlled braking
High-inertia fans or centrifuges
Test benches requiring rapid deceleration
Technical Parameters
| Parameter | Value |
|---|---|
| Product type | Braking chopper |
| Drive family | ABB ACS600 |
| Rated braking power | 88 kW |
| DC bus voltage (max) | ≈ 750 V DC |
| AC supply compatibility | 380–690 V AC drives |
| Braking control | DC bus voltage controlled |
| External resistor | Required (not included) |
| Braking duty | Intermittent / heavy deceleration |
| Operating temperature | -10 °C to +50 °C |
| Storage temperature | -40 °C to +70 °C |
| Installation | Control cabinet mounting |
| Cooling | Forced air (drive cabinet airflow) |
Installation Notes
Must be matched with a braking resistor of the correct rated value
Keep the cable length between the chopper and resistor as short as possible
Ensure cabinet ventilation meets heat dissipation requirements
Braking parameters must be set in the ACS600 drive, not the chopper
Model-Specific FAQ
Common Problem
Can the NBRA-656C be used without a braking resistor?
No. This model is specifically designed to divert energy to an external resistor.
Can it be used with ACS800 or newer drives?
No. This product is designed for the ACS600 architecture. Later drive series employ different braking solutions.
Does the NBRA-656C feed energy back to the grid?
No. This device converts energy into heat via a resistor-it is not a regenerative unit.
What consequences arise if resistor specifications are insufficient?
This will cause abnormal temperature increases and limited braking capability; in some cases, it may still trigger the drive's overvoltage trip.
Over a Decade of Global Supply Experience
We're Here to Help – PLC Export
Industrial Drive Support Experience
Years of experience handling ABB drive accessories enable us to provide proper matching guidance for brake choppers such as the NBRA-656C, avoiding common field errors in resistor or size selection.
Drive System Problem Solving
For deceleration issues, DC bus overvoltage trips, or inertia-related faults, brake choppers remain one of the most reliable and cost-effective hardware solutions.
Request a Quote
| Contact Method | Details |
|---|---|
| sales3@mooreplc.com | |
| WhatsApp / Phone | +86 180 2071 4662 |
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