NBRA-669C Brake Chopper | ABB Module for ACS800 Inverters
Manufacturer: ABB
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Part Number: NBRA-669C
Condition：New with Original Package
Product Type: Module for ACS800 Inverters
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Country of Origin: Sweden
Payment:T/T, Western Union
Shipping port: Xiamen
Warranty: 12 months
Description / Overview
The ABB NBRA-669C is a high-performance brake chopper designed for ACS800 series 690 V three-phase inverters, frame size R8. It dissipates excess energy during motor deceleration, ensuring precise and safe braking in variable frequency drive (VFD) applications.
Equipped with intelligent algorithms, the NBRA-669C dynamically monitors motor status and connects external braking resistors only when necessary. This enhances braking accuracy and improves overall system stability. Moreover, its robust design makes it suitable for heavy-duty industrial environments such as cranes, conveyors, and rolling mills.
Its compact structure allows easy installation inside cabinets, while parallel operation support enables higher braking power when required.
Technical Specifications
| Attribute | Specification |
|---|---|
| Model | NBRA-669C |
| Part Number | 3ABD58984124 |
| Function | Brake Chopper Module |
| Applicable Equipment | ACS800 series drives, frame size R8, 690 V 3-phase inverters |
| Peak Braking Power | 375 kW (10–30 seconds) |
| Continuous Braking Power | 13.5 kW |
| External Resistor Requirement | Minimum 2.7 Ω; recommended 3×9 Ω in parallel |
| Dimensions (W × D × H) | 334 × 240 × 583.5 mm |
| Weight | 2.6 kg |
| Enclosure Protection | IP00 (requires cabinet installation) |
| Mounting | Rear-mounted, 4 × 7 mm mounting holes |
| Compatibility | Supports parallel operation for higher braking power |
| Design Features | Intelligent dynamic control, compact structure, ACS800 compatibility |
| WEEE Category | Not in WEEE scope |
FAQ
Q1: What is the peak braking power of NBRA-669C?
A1: It supports a peak braking power of 375 kW for durations between 10 and 30 seconds.
Q2: Which drives are compatible with this brake chopper?
A2: The NBRA-669C is designed for ACS800 series 690 V three-phase inverters, frame size R8.
Q3: Can multiple modules be connected in parallel?
A3: Yes, parallel operation is supported to increase braking power.
Q4: Does it require an external resistor?
A4: Yes, a minimum 2.7 Ω resistor is required, with three 9 Ω resistors recommended in parallel.
Q5: What environments is the module suitable for?
A5: It is ideal for heavy-duty industrial environments such as cranes, conveyors, and rolling mills.