ABB 3BHE013940R0002 UNS0868B-P,V2 Power Supply Device

The ABB 3BHE013940R0002, identified by the hardware code UNS0868B-P,V2, is a high-performance power supply unit engineered for the UNITROL series of excitation systems. This device provides critical voltage regulation and power distribution for generator excitation control, ensuring the stability of synchronous machines. Because it utilizes advanced semiconductor technology, the module delivers consistent electrical output even when the primary supply fluctuates. This reliability makes it a vital component for power plants and heavy industrial facilities that depend on uninterruptible energy management.

Superior Energy Efficiency and Thermal Management

Operational efficiency remains a primary advantage of the UNS0868B-P,V2. The module achieves an impressive 97% efficiency rating, which significantly reduces waste heat and minimizes the energy footprint of the control cabinet. Furthermore, the hardware sustains a broad operating temperature range from -20°C to +70°C. This thermal resilience allows the power supply to function in unconditioned environments, from remote mining sites to high-heat manufacturing plants. Consequently, facilities can achieve lower cooling costs and a reduced total cost of ownership.

Integrated Protection and System Safety

The 3BHE013940R0002 incorporates multiple hardware protection layers to safeguard sensitive DCS infrastructure. Specifically, the unit features automated shutdown and recovery mechanisms for overvoltage, overload, and short-circuit conditions. These safeguards prevent electrical faults from cascading through the excitation system, thereby protecting high-value assets like generators and turbines. In addition, the compact 8×19.6×6 cm form factor enables high-density installation in standard control racks, maximizing cabinet space without sacrificing safety clearances.

Technical Specification Summary

• Model Number: 3BHE013940R0002
• Hardware Code: UNS0868B-P,V2
• Brand: ABB
• Product Series: UNITROL Excitation Systems
• Module Type: Power Supply Device
• Efficiency: 97%
• Operating Temperature: -20°C to +70°C
• Physical Dimensions: 8 cm x 19.6 cm x 6 cm
• Unit Weight: 0.72 kg
• Manufacturing Origin: Sweden
• System Application: DCS / Excitation Control