ABB NBRA-656C Braking Chopper

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• • • Product Overview

      The ABB NBRA-656C is a high-performance braking chopper designed for ABB drives and servo systems. It quickly absorbs or dissipates excess energy generated by the motor during braking, ensuring smooth deceleration and preventing overvoltage on the DC bus. The NBRA series choppers are fast, efficient, and widely used in industrial automation, robotics, and drive systems.

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      Technical Specifications

      • Model: NBRA-656C

      • Type: Braking Chopper

      • Applicable Voltage: 380–480 V AC

      • Applicable Power Range: 7.5–75 kW (depending on drive configuration)

      • Rated Current: 10 A

      • Braking Resistor Connection: External braking resistor supported

      • Response Time: < 5 ms

      • Protection Functions: Overvoltage and overtemperature protection

      • Operating Temperature: -20°C to +60°C

      • Protection Class: IP20

      • Mounting: Panel or cabinet mounting

      • Standards & Certifications: CE, UL

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      Features & Advantages

      • Fast response to absorb braking energy and prevent overvoltage

      • High reliability for long-term industrial operation

      • Easy installation via panel or cabinet mounting

      • Comprehensive protection: overvoltage and overtemperature

      • Energy-saving: can recover energy through braking resistor

      • High compatibility with various ABB drives and servo systems

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      Application Areas

      • ABB AC drives and servo drive systems

      • Industrial robot control systems

      • Elevator and conveyor braking control

      • Lifting machinery and material handling equipment

      • Automated production lines and machinery

      • Fan, pump, and compressor braking control

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      Precautions

      • Ensure rated voltage matches the drive before installation

      • Perform wiring and maintenance only in a de-energized state

      • Avoid high temperature, humidity, and corrosive environments

      • Regularly inspect terminal connections and cooling conditions

      • Follow environmental and rated specifications in the manual for long-term reliable operation

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The structure and details of the product：

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