Sukhnandan Enterprises

Yaskawa make Breaking Unit 
DBU 4030D
The Yaskawa CDBR-4030D is a 400V class dynamic braking unit (often listed as Cdbu-4030D) designed to work with variable-frequency drives (VFDs) to dissipate excess regenerative energy during braking, preventing DC bus over-voltage. Key Technical Specifications:

• Model Number: CDBR-4030D (CDBR4030D)
• Voltage Class: 400 V Class (Input Range: DC 510-680V)
• Motor Capacity: 30 kW (approx. 40 HP)
• Rated Discharge Current: 15 Amps
• Peak Discharge Current: 40A (10% Duty)
• Minimum External Resistance: Approx 10 Ohms to 12.8 Ohms
• Cooling Method: Natural Air Cooled
• Enclosure Rating: IP20
• Weight: Approximately 2.0 - 2.57 Kg 

Functional Details:

• Application: Industrial machinery, inverters, and servo drives, particularly with high-inertia loads requiring rapid stopping.
• Compatibility: Designed for 3-phase 400V inverters.
• Design: Compact, modular design with, in some versions, user-adjustable trip thresholds.
• Protection: The unit helps prevent inverter faults by directing excess energy to an external braking resistor.

Additional Information:

• Production Capacity: As per Production
• Delivery Time: Immediate or Delivery
• Packaging Details: Standard packaging