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CDBR series brake unit.

When fast or precise deceleration of a motor is required in transmission applications, it is important to use the CDBR series braking unit to achieve the necessary braking torque and avoid excessive pump voltage during the deceleration process that could compromise safe operation of the equipment.


The CDBR series braking unit is a low-cost energy-saving braking unit manufactured using German technology. When paired with an appropriate braking resistor, it can effectively absorb and dissipate the regenerative energy produced by the speed-controlled motor during the deceleration process, while also achieving excellent braking performance.


The CDBR series directly consumes regenerative energy produced by the motor during the speed control process on the braking resistor, making for a simple and cost-effective device.


All CDBR products are designed with the utmost reliability and manufactured using high-quality production techniques, enabling each product to provide maximum efficiency.


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The CDBR braking unit, leveraging advanced German technology, achieves a harmonious blend of low cost and high efficiency, standing out in motor deceleration control. Designed specifically to address the issue of excessive pump-up voltage during rapid or precise motor deceleration, it ensures the safe and stable operation of equipment.


During deceleration, motors often generate substantial regenerative electrical energy. If not properly managed, this energy can lead to excessive pump-up voltage, potentially damaging electrical devices and systems. The CDBR braking unit effectively mitigates this issue by rapidly absorbing and dissipating the regenerative energy through its integrated braking resistor, thereby preventing the occurrence of pump-up voltage and safeguarding equipment operation.


Moreover, the CDBR braking unit boasts a highly reliable design and superior manufacturing craftsmanship, ensuring optimal performance from every product. Its compact structure and straightforward installation process provide users with utmost convenience. Whether in industrial automation production lines, robot control systems, elevators, lifting equipment, or other applications, the CDBR braking unit demonstrates its unique advantages and value.


In summary, the CDBR braking unit, with its advanced technology, exceptional performance, reliable design, and cost-effectiveness, has emerged as a leader in motor deceleration control, offering safe, efficient, and economical solutions for various transmission applications.


2.1 Technical Specifications
Braking method.Voltage tracking method.
Reaction time.There are multiple noise filtering algorithms available for <1ms.
Grid voltage300V-460Vac,45-66HZ
Action voltage.630/660/690/730/760V +/-10V
Induced voltage.10V
Protection/CoolingOverheating, overcurrent, short circuit/internal cooling fan.
Noise filteringthere
Protection level.IP00



2.2Electrical characteristics
Specification model.Braking mode.Minimum resistance.rated currentPeak current
CDBR-4030Cenergy consumption-based20Ω15A50A
CDBR-4045Cenergy consumption-based13.6Ω25A75A
CDBR-4055Cenergy consumption-based12.5Ω30A85A
CDBR-4075Cenergy consumption-based10Ω33A100A
CDBR-4110Cenergy consumption-based6.8Ω50A150A
CDBR-4160Cenergy consumption-based70A200A
CDBR-4220Cenergy consumption-based3.2Ω85A300A
CDBR-4300Cenergy consumption-based2.5Ω110A400A



Model number.Length x Width x Height (mm)Installation hole (mm)
CDBR-4030C 185×145×102155×135 M6×4
CDBR-4045C 185×145×102155×135 M6×4
CDBR-4055C 185×145×102155×135 M6×4
CDBR-4075C 320×187×163304×120 M6×4
CDBR-4110C 320×187×163304×120 M6×4
CDBR-4160C 320×187×163304×120 M6×4
CDBR-4220C 410×254×203386×203 M6×4
CDBR-4300C 410×254×203386×203 M6×4



CDBR series brake unit.

Selection of Brake Resistors

CDBR Energy-Saving Braking Unit 380V Grid-Matching Resistance Recommended Table (Resistance value determines braking torque, resistance power depends on braking frequency Kc; the following table shows the braking torque at approximately 100% and the resistance power at Kc=10%)
Motor kWResistance (Approximately)Braking torque (approx.)
7.5kW75Ω  780W100%
11kW50Ω 1040W100%
15kW40Ω 1560W100%
18.5kW30Ω 4800W100%
22kW27.2Ω 4800W100%
30kW20Ω 6000W100%
37kW16Ω 9600W100%
45kW14Ω 9600W100%
55kW10Ω  12kW100%
75kW6.8Ω  20kW100%
90kW6.6Ω  30kW100%
110kW6.6Ω  30kW100%
132kW6Ω  40kW100%
160kW3.7Ω  40kW100%
185kW3.5Ω  50kW100%
220kW3.2Ω  60kW100%