Description
Detailed parameter table
| Parameter name | Parameter value |
| Product model | 3ASC25H204 DAPU100 |
| Manufacturer | ABB |
| Product category | Drive auxiliary power unit |
| Input voltage | 380-480 V AC, 3-phase |
| Output voltage | 24 V DC ±2% |
| Output current | 10 A (continuous), 20 A (peak for 10 s) |
| Efficiency | ≥90% @ full load |
| Ripple voltage | ≤50 mV (peak-to-peak) |
| Protection features | Overvoltage, overcurrent, short circuit, overtemperature |
| Operating temperature | -10°C to 60°C |
| Dimensions | 150mm × 120mm × 80mm |
| Mounting type | DIN rail mount (35 mm) |
| Protection rating | IP20 |
| Certifications | IEC 60950, CE, UL, RoHS |
ABB 3ASC25H204 DAPU100
Product introduction
The ABB 3ASC25H204 DAPU100 is a high-reliability drive auxiliary power unit designed to provide stable 24 V DC power for control systems, sensors, and auxiliary components in variable frequency drive (VFD) installations. As a key accessory in ABB’s drive ecosystem, ABB 3ASC25H204 DAPU100 converts 3-phase AC input into clean, regulated DC power, ensuring consistent operation of critical control elements even during voltage fluctuations or transient events.
ABB 3ASC25H204 DAPU100 delivers 10 A continuous current (20 A peak) with low ripple, making it suitable for powering safety control modules like the ABB UNC4672AV1 HIEE205012R1, communication interfaces such as the CI627A, and HMI panels including the XVC517AE10. Its compact design and DIN rail mounting enable easy integration into drive cabinets, while its robust protection features safeguard connected devices from electrical faults. Whether deployed in industrial motor drives, conveyor systems, or pump controls, ABB 3ASC25H204 DAPU100 ensures uninterrupted power to control circuits, enhancing system reliability and reducing downtime.
Core advantages and technical highlights
Stable and clean power output: ABB 3ASC25H204 DAPU100 maintains output voltage within ±2% of 24 V DC, even with input voltage variations of ±10% and load changes from 10% to 100%. Its low ripple (<50 mV peak-to-peak) prevents interference with sensitive electronics like the UNC4672AV1 safety module, ensuring accurate signal detection and reliable operation. In a textile mill’s VFD system, this stability prevents erroneous safety shutdowns caused by voltage spikes, maintaining continuous production.
High surge current capability: With a 20 A peak current rating for 10 seconds, ABB 3ASC25H204 DAPU100 handles inrush currents from contactors, solenoids, or HMI startup without voltage drop. For example, when an XVC517AE10 HMI powers on, it draws up to 15 A briefly—this unit supplies the surge without affecting other devices like the RXIDK 2H digital input module, ensuring all components initialize properly.
Comprehensive protection features: The unit incorporates overvoltage, overcurrent, short circuit, and overtemperature protection to safeguard both itself and connected equipment. In the event of a short circuit in a field device, it shuts down within 10 ms, preventing damage to the power supply and limiting fault propagation. Its overtemperature protection (activated at 75°C) ensures reliable operation in hot cabinet environments, such as those housing large VFDs.
Efficient and compact design: With ≥90% efficiency at full load, ABB 3ASC25H204 DAPU100 minimizes power loss and heat generation, reducing the need for cabinet cooling. Its compact size (150mm × 120mm × 80mm) saves valuable space in crowded drive enclosures, allowing integration alongside other components like the 200900-004 terminal blocks. In a water treatment plant’s pump control cabinet, this efficiency and size enable a more compact system design.
Typical application scenarios
In a manufacturing plant’s motor control center, ABB 3ASC25H204 DAPU100 powers the control circuitry of three 50 HP VFDs. It supplies 24 V DC to the CI627A communication modules (enabling PROFIBUS communication with the plant SCADA), the UNC4672AV1 safety modules (monitoring emergency stops), and various relay coils. During a momentary input voltage dip (to 340 V AC), the unit maintains stable output, preventing VFD control circuits from resetting and avoiding unplanned downtime. Its short circuit protection also isolates a faulty relay coil, allowing other systems to continue operating.
In a warehouse conveyor system, ABB 3ASC25H204 DAPU100 provides power to the XVC517AE10 HMI, RXIDK 2H digital input modules (monitoring photoelectric sensors), and solenoid valves controlling divertors. Its peak current capability handles the inrush from four solenoid valves activating simultaneously during a product sort, ensuring smooth operation without voltage sags. The unit’s DIN rail mounting allows easy installation alongside the conveyor’s VFD, simplifying wiring and reducing cabinet size.
ABB 3ASC25H204 DAPU100
Related model recommendations
ABB UNC4672AV1 HIEE205012R1: A safety control module powered by ABB 3ASC25H204 DAPU100 in safety-critical systems.
ABB CI627A 3BSE017457R1: A communication module that receives 24 V DC power from ABB 3ASC25H204 DAPU100.
ABB XVC517AE10 3BHB004744R0010: An HMI panel powered by ABB 3ASC25H204 DAPU100 for operator interfaces.
ABB RXIDK 2H 1MRK000838-HA: A digital input module that uses ABB 3ASC25H204 DAPU100 for power.
ABB 200900-004: A terminal block used to distribute power from ABB 3ASC25H204 DAPU100 to multiple devices.
ABB TB857: A surge protection device that safeguards ABB 3ASC25H204 DAPU100 from input voltage transients.
Installation, commissioning and maintenance instructions
Installation preparation: Mount ABB 3ASC25H204 DAPU100 on a 35 mm DIN rail in a clean, dry control cabinet, ensuring at least 50mm clearance above and below for ventilation. Connect 3-phase AC input (380-480 V) using 1.5mm² cable, protected by a 6A circuit breaker. Wire the 24 V DC output to a distribution terminal block (e.g., 200900-004) using 1mm² cable, with a 10A fuse in the positive line. Ground the unit via the dedicated earth terminal. Use a torque screwdriver set to 1.0 Nm for all connections. Power off the AC supply during installation.
Maintenance suggestions: Inspect ABB 3ASC25H204 DAPU100 quarterly for loose connections, dust accumulation, and LED status (power: green, fault: red). Clean ventilation slots with compressed air to prevent overheating. Measure output voltage semi-annually under full load to ensure it remains within 23.5-24.5 V DC. Test protection features annually by simulating a short circuit (using a temporary test wire with a fuse) and verifying the unit shuts down and resets properly. Replace the unit if output voltage deviates beyond specifications or protection features fail—use only ABB-certified replacements.
Service and guarantee commitment
ABB 3ASC25H204 DAPU100 is backed by a 3-year warranty from installation, covering manufacturing defects and ensuring output voltage stability within published limits. ABB’s technical support team provides response within 8 hours for standard inquiries, with troubleshooting guidance available during business hours.
The warranty includes access to installation manuals and technical specifications. Extended service contracts offer annual performance testing and priority support, ensuring the unit maintains reliable power output throughout its 10-year design lifespan. ABB’s commitment to quality underscores confidence in ABB 3ASC25H204 DAPU100 as a durable power solution for industrial control systems.
