Product Overview
The ABB 3BHB006449R0002 is an industrial-grade power supply unit belonging to the MPS105-230/24/48 product family, engineered to deliver stable and reliable DC power conversion for critical control and excitation systems. Also identified by the alternate part number 857781, this module serves as a vital component within ABB’s UNITROL excitation platform and distributed control system (DCS) architectures, where continuous and precise power delivery is essential for maintaining operational integrity . The ABB 3BHB006449R0002 converts a standard 230 VAC single-phase input into regulated 24 VDC and 48 VDC outputs, supporting the diverse voltage requirements of modern industrial control electronics .
As a primary switch-mode power supply, the ABB 3BHB006449R0002 employs advanced semiconductor technology to achieve high conversion efficiency while minimizing heat generation and energy waste. The unit’s stabilized output voltage ensures that sensitive downstream components—including control processors, I/O modules, and communication interfaces—receive consistent power free from the fluctuations and transients common in industrial electrical environments . With a nominal output current of 10 A at +60°C (rising to 12 A at +40°C), the ABB 3BHB006449R0002 provides sufficient capacity to power multiple loads within a single cabinet or excitation rack .
The ABB 3BHB006449R0002 is specifically positioned as a spare part for ABB UNITROL excitation systems, generator voltage regulation equipment, and industrial automation control cabinets. Its compact form factor and touch-protected IP20 construction facilitate straightforward integration into existing installations without requiring extensive modification or additional safety enclosures . For facilities operating legacy UNITROL systems or ABB DCS platforms, maintaining a supply of ABB 3BHB006449R0002 units supports lifecycle continuity and minimizes unplanned downtime.
Technical Specifications
| Parameter Name | Parameter Value |
|---|---|
| Product Model | ABB 3BHB006449R0002 |
| Alternate Part Number | 857781 |
| Manufacturer | ABB |
| Product Type | Power Supply Unit / Power Module |
| Product Family | MPS105-230/24/48 |
| Input Voltage | 230 VAC (range: 95–132 VAC per Machinio listing) |
| Output Voltage | 24 VDC / 48 VDC |
| Nominal Output Current | 10 A (+60°C); 12 A (+40°C) |
| Input Current | 4.2 A |
| Efficiency | 0.9 (90%) |
| Frequency | 50/60 Hz |
| Protection Class | IP20 (Touch-Protected) |
| Country of Origin | Switzerland / Czech Republic |
| Weight | Approx. 2.7 kg |
