The ABB PPD103B01 (3BHE020455R0001) is a dedicated power supply and auxiliary power supply module engineered specifically for ABB excitation and high-power industrial control systems, such as the UNITROL series. This module delivers reliable, isolated auxiliary and control voltages required to run critical firing circuits, regulator boards, and internal logic units. Designed for continuous duty in heavy industrial environments, it ensures high electrical stability, excellent noise suppression, and uninterrupted power availability for mission-critical power generation equipment.

Product Specifications (Datasheet)
- Brand: ABB
- Model: PPD103B01 (Part Number: 3BHE020455R0001)
- Series: UNITROL Excitation / Advanced Industrial Power Series
- Product Name: Dedicated Power Supply / Auxiliary Power Supply Module
- Place of Manufacture: Switzerland / Sweden / Germany
- Product Status: Factory New / Refurbished Spare Parts Available
- Dimensions: Standard industrial rack-mountable module format (approx. 240 mm x 150 mm x 80 mm)
- Weight: Approx. 1.4 kg
- Power Rating: Multi-tap AC/DC input supporting specialized control rack voltage rails (providing regulated auxiliary DC outputs)
- Discontinuation Status: Active support / Mature lifecycle platform component
Parameter Configuration & Modification Methods
- Input Voltage & Jumper Settings: Input voltage selections and primary protection fusing must be verified and configured via onboard hardware links or terminal blocks to match the plant’s auxiliary supply standard prior to energization.
- Output Voltage Adjustment: Secondary auxiliary voltage rails can be monitored using diagnostic test points and fine-tuned via precision internal potentiometers during system calibration or routine maintenance checks.
Manual & Automatic Mode Switching
- Automatic Mode: During normal excitation system operation, the power supply automatically regulates input fluctuations, manages internal soft-start sequences, and delivers continuous auxiliary power to control and gate-drive boards without operator intervention.
- Manual / Maintenance Mode: Maintenance technicians can manually de-energize the auxiliary supply using upstream cabinet circuit breakers or local rack disconnect switches to safely perform hardware inspections or component replacements.
Frequently Asked Questions (Q&A)
- Q1: What systems typically utilize the PPD103B01 power supply module?
- A1: It is predominantly used in ABB UNITROL excitation systems and high-capacity industrial control cabinets requiring dedicated auxiliary power rails.
- Q2: What should I check if the module fails to output auxiliary voltage?
- A2: Verify the incoming primary supply voltage, inspect input protection fuses, ensure plug-in terminal connectors are firmly seated, and check for any short circuits on the downstream load circuits.
- Q3: Are LED indicators available to monitor module status?
- A3: Yes, front-panel LED indicators display the presence of input power and the operational status of individual output voltage rails.
Recommended ABB Models
- UNITROL 6800 (Excitation Control System)
- PPD113B01 (3BHE020457R0001 Auxiliary Supply Unit)
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- SD822 (3BSC610066R1 Power Supply Module)
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- PM866K01 (3BSE050200R1 Processor Unit)
- AI810 (3BSE008516R1 Analog Input Board)
- AO810 (3BSE008520R1 Analog Output Board)
- DI810 (3BSE008508R1 Digital Input Module)
- DO810 (3BSE008512R1 Digital Output Module)
