1 brand new NBRA-669C/NBRA669C universal brake chopper

Sales manager: Vicky.xia Email: vicky@kerienplc.com Mob(Whatsapp/Wechat) :+ 86 13695017671 QQ：259680581 Skype :+ 86 13695017671

Comprehensive information of NBRA-669C universal brake chopper

1. Product Overview

NBRA-669C is a high-performance universal brake chopper produced by ABB, designed specifically for industrial automation scenarios, especially suitable for high-precision braking requirements such as variable frequency speed regulation systems and robot control。

Adopting advanced power electronics technology and intelligent control algorithms, it supports dynamic adjustment of the connection and disconnection of braking resistors, achieving fast and precise braking.

2. Core parameters

Electrical characteristics:

Input voltage: Supports 690V three-phase inverters (such as ACS800 series), with some models labeled as 24V DC voltage.

Current range: 100-400A.

Braking power: Can withstand 375 kW/10 seconds or 30 seconds of short-term braking, with a continuous power dissipation of 13.5 kW.

Resistance requirement: The minimum external resistance group is 2.7 Ω (3 groups of 9 Ω resistors need to be connected in parallel).

Physical characteristics:

Dimensions: 334mm (width) x 240mm (depth) x 583.5mm (height).

Weight: 24kg (whole machine), partially modular described as 2kg (may refer to independent components).

Shell protection level: IP00。

3. Functional features

Intelligent control: Real time monitoring of motor status, dynamic adjustment of braking process, support for fault self diagnosis and multiple protections (overheating, overcurrent, short circuit).

Heat dissipation design: Equipped with built-in heat sinks and high-power fans, supporting external heat dissipation expansion to ensure stability under high temperature conditions.

Compatibility: Compatible with various frequency converters (such as ACS800 series) and servo motors, supporting a wide range of input voltages and parallel use to enhance braking power.

4. Application scenarios

In the field of industrial automation: used for braking control of robots, high-precision servo motors, and variable frequency speed control systems.

Heavy duty equipment: emergency braking and energy management for cranes, elevators, and large machinery.