ABB 3BHE055094R0002 GBU72

Description

Detailed parameter table

ABB 3BHE055094R0002 GBU72

Product introduction

The 3BHE055094R0002 GBU72 is a high-performance power rectifier module from ABB, engineered to convert 3-phase AC input to stable DC power in industrial drive systems and power conversion equipment. As a critical component in variable frequency drives (VFDs) and power supplies, it transforms alternating current from the mains into direct current, which is then filtered and regulated to power inverter stages that control motor speed.

This module features a 3-phase full-bridge configuration with six high-efficiency diodes, delivering a rated DC output current of 72 A—ideal for medium-power applications like conveyor drives, pumps, and industrial fans. The 3BHE055094R0002 GBU72 is designed for seamless integration with ABB’s ACS880 drive series, leveraging forced air cooling to maintain optimal operating temperatures even in high-load conditions. Its compact form factor and robust isolation make it suitable for space-constrained control cabinets, ensuring reliable performance in manufacturing plants, water treatment facilities, and energy systems.

Core advantages and technical highlights

High-efficiency power conversion: The 3BHE055094R0002 GBU72 minimizes energy loss with a low forward voltage drop (≤1.8 V at rated current), reducing heat generation and improving overall system efficiency. In a 50 kW pump drive system, this efficiency translates to energy savings of up to 3% compared to standard rectifiers, lowering operational costs over the module’s lifespan.

Robust surge handling: With the ability to withstand 10× rated current (720 A) for 10 ms, the 3BHE055094R0002 GBU72 tolerates transient current spikes common during motor startup or load changes. In a manufacturing line with frequent conveyor starts, this protection prevents module failure, reducing unplanned downtime by up to 40% compared to less robust rectifiers.

Thermal resilience: The module operates reliably with junction temperatures up to 125°C, supported by efficient heat dissipation through a thermal interface to the drive’s heatsink. In a steel mill’s hot rolling facility—where ambient temperatures reach 50°C—the 3BHE055094R0002 GBU72 maintains stable output, ensuring consistent performance of the roll drive system without derating.

Typical application scenarios

In a municipal water treatment plant’s aeration system, the 3BHE055094R0002 GBU72 is integrated into ACS880 drives controlling 45 kW aeration blowers. It converts 3-phase 480 V AC mains power to DC, which the drive’s inverter converts back to variable-frequency AC to adjust blower speed based on oxygen demand. The module’s surge handling capability accommodates the inrush current during blower startup, while its efficient cooling ensures reliable operation in the plant’s warm, humid control room.

In an automotive factory’s robotic welding cell, the 3BHE055094R0002 GBU72 powers the ACS880 drive controlling the welding robot’s servo motors. It rectifies 3-phase AC to DC, providing the stable power needed for precise motor positioning during weld cycles. The module’s compact size fits within the drive’s enclosure, saving space in the densely packed cell, while its isolation rating protects sensitive control electronics from electrical noise generated by welding arcs.

Related model recommendations

• 3BHE055095R0001 GBU100: Higher current variant (100 A) of 3BHE055094R0002 GBU72, suitable for larger drives in 75 kW+ applications.
• 3BHE038692R0001 DIO200: Diode rectifier bridge complementary to 3BHE055094R0002 GBU72in multi-module power systems.
• SDCS-POW-3: ABB power supply unit that integrates 3BHE055094R0002 GBU72for redundant power configurations.
• ACS880-07-04A1-3: ACS880 drive model optimized for use with 3BHE055094R0002 GBU72in 1.5 kW motor applications.
• 3BSE028149R1: Terminal block kit for secure electrical connections to 3BHE055094R0002 GBU72.
• 3BHE055093R0001 GBU50: Lower current variant (50 A) for smaller drives, offering cost-effective solutions where 3BHE055094R0002 GBU72’s capacity is unnecessary.
  

  ABB 3BHE055094R0002 GBU72

Installation, commissioning and maintenance instructions

Installation preparation: Mount the 3BHE055094R0002 GBU72 on a clean, flat heatsink using thermal conductive paste (ABB-approved) to ensure optimal heat transfer. Torque mounting screws to 2.5 Nm to avoid excessive pressure on the module. Connect 3-phase AC input to the primary terminals and DC output to the drive’s DC bus, using copper cables rated for 72 A (minimum 10 mm²). Ensure all connections are tight to prevent resistive heating, and verify correct polarity before powering on. Install a 100 A fuse in the AC input line to protect against sustained overcurrent.

Maintenance suggestions: Inspect the 3BHE055094R0002 GBU72 quarterly for signs of overheating (discolored terminals or heatsink) or loose connections. Clean the heatsink fins with compressed air to remove dust, maintaining airflow for cooling. Measure forward voltage drop annually using a digital multimeter under load—values exceeding 2.0 V indicate diode degradation. Replace the module if overcurrent trips occur without external faults, or if visual damage (cracks, bulging) is present. Use only ABB-approved replacements to ensure compatibility with drive systems and maintain safety certifications.

Service and guarantee commitment

The 3BHE055094R0002 GBU72 is backed by a 2-year warranty, covering defects in materials and workmanship under normal operating conditions. ABB’s drive technical support team provides specialized guidance on integration with ACS880 drives, including thermal management and system protection design.

Customers receive access to detailed datasheets, mounting diagrams, and thermal performance curves for the 3BHE055094R0002 GBU72. ABB maintains global inventory of replacement modules to minimize downtime, with express delivery options for critical applications. Our service network offers on-site support for installation verification and troubleshooting, ensuring the module operates at peak efficiency throughout its service life.