Description
Key Technical Specifications
| Parameter | Value |
|---|---|
| Manufacturer | ABB |
| Product Designation | DASD001 |
| ABB Type Number | 3ASC25H241 |
| Product Type | Thyristor Module |
| Rated Voltage | 530 V |
| Rated Current | 25 A |
| Phase Configuration | Three-phase |
| Cooling | No fan / natural cooling |
| Line Connection | L1, L2, L3 |
| Motor Connection | T1, T2, T3 |
| Maximum Line Terminal Size | 35 mm² |
| Control Connection | -X31 system cable |
| Overall Height | 422 mm |
| Overall Width | Approx. 87 mm* |
| Overall Depth | 315 mm |
| Weight | Approx. 16 kg |
| Power Loss, No Load | Approx. 10 W |
| Reference Temperature | 55 °C |
| Thermal Derating | 1.2% per °C |
| Enclosure/Protection | IP20 |
| Associated System | ABB ASTAT equipment |
*ABB’s archived dimensional table contains formatting artifacts around the width value; the manufacturer’s documentation identifies the module dimensions as approximately 422 × 87 × 315 mm.
The ABB manual explicitly groups 3ASC25H241 / DASD 001 with the 530 V, 25 A thyristor modules. The same table identifies 3ASC25H242 / DASD 002 as the 530 V, 50 A version with a fan, which is useful when checking replacement hardware.
Product Introduction
ABB DASD001 3ASC25H241
The ABB DASD001 3ASC25H241 is a three-phase thyristor power module used in ABB motor-control equipment. The manufacturer’s documentation rates this specific assembly at 530 V and 25 A and identifies line terminals L1/L2/L3, motor terminals T1/T2/T3, and a system-control cable connection at X31.
This is power hardware, not a conventional PLC digital-input module. The thyristor stage handles the motor-side power path, so voltage rating, current rating, cooling arrangement, and the associated control system all matter when selecting a replacement. ABB specifies this version as a fanless module with a 55 °C reference temperature.
3ASC25H241
Application Scenarios & Field Pitfalls
Engineering Pain Point
When an older motor drive fails, the temptation is to replace the power module with something that has the same current rating. That is not enough here. The 530 V / 25 A rating and thyristor topology are only part of the selection. The control board, firing circuit, motor voltage, cooling arrangement, and cabinet wiring all have to agree with the original system.
Typical Applications
- Industrial Motor Drives — Three-phase motor control in legacy ABB drive equipment.
- Process Plants — Speed and power control for pumps, fans, conveyors, and other large motor loads.
- Material Handling — Thyristor-based motor control in older hoists and industrial handling systems.
- Heavy Industry — Legacy ABB power-control cabinets where a discrete thyristor module forms the motor power stage.
Technical Pitfalls to Avoid
- Do not confuse DASD001 with a digital-input module.
Some current commercial listings incorrectly describe 3ASC25H241 / DASD001 as a digital-input or pulse-feedback module. ABB’s own archived documentation identifies it as a 530 V / 25 A thyristor module. That distinction is critical. - Verify the motor and line voltage.
The 530 V rating is not a generic “industrial voltage” specification. Confirm the actual line-to-line voltage and the drive’s intended motor connection before installation. - Do not substitute the 50 A version automatically.
DASD002 / 3ASC25H242 is rated 530 V / 50 A and includes a fan, while DASD001 is 530 V / 25 A and fanless. The mechanical and thermal arrangements are different. - Check thermal conditions.
ABB lists a 55 °C reference temperature and approximately 1.2% current derating per °C for this module. Cabinet temperature matters, particularly when an older cabinet has restricted airflow. - Inspect the semiconductor power connections.
Check L1/L2/L3 and T1/T2/T3 terminals for heat discoloration, loose connections, oxidation, or damaged hardware. A failed thyristor is sometimes the consequence rather than the original cause. - Check the control cable.
The manufacturer identifies -X31 as the system-cable connection. Verify this connection and the associated control electronics before declaring the power module defective. - Do not perform insulation testing through connected electronics.
If the motor circuit or drive cabinet requires insulation testing, isolate sensitive semiconductor and control circuitry according to the approved maintenance procedure. - Check the gate/firing circuit after a thyristor failure.
Replacing a damaged power module without checking the firing-control circuit can result in another immediate semiconductor failure. - Observe semiconductor handling precautions.
A 16 kg power module is not a small PCB. Use appropriate lifting and mechanical support, and protect the semiconductor assembly from impact and contamination during installation.
Related Products
- ABB DASD002 3ASC25H242 — 530 V / 50 A thyristor module with one cooling fan. It belongs to the same family but has twice the current rating and a different thermal arrangement, so it is not an automatic replacement for .
- ABB DASD101 3ASC25H281 — 600 V / 25 A thyristor module. It has the same nominal current class as but a higher voltage rating and different system application.
- ABB DASD151 3ASC25H251 — 690 V / 25 A thyristor module. It is intended for the higher-voltage variant of the ABB thyristor-module architecture.
- ABB DASD102 3ASC25H282 — 600 V / 50 A thyristor module with fan cooling. It combines the higher voltage rating with the higher-current, fan-cooled architecture.
- ABB DASD103 3ASC25H283 — 600 V / 100 A thyristor module. This is a substantially higher-current power stage and should only be considered where the original system is designed for that rating.
- ABB DATX100 3ASC25H208 — Related legacy ABB control-system hardware encountered with the same broader equipment family. It serves a control/interface role rather than replacing the thyristor power stage.
- ABB DATX130 3ASC25H214 — Related legacy ABB control hardware. It is a different functional assembly and should not be substituted for the power module.
- ABB DASG Overvoltage Protection Modules — ABB documentation recommends DASG overvoltage-protection modules with the 415 V, 530 V, and 600 V thyristor-module families. They are complementary protection components rather than substitutes for .
- ABB DARA 1000 / DARA 1001 / DARA 1010 — Associated ABB power-supply/control hardware used in related ASTAT systems. The exact pairing depends on the cabinet and system configuration.
Procurement note: The strongest available identification is from ABB’s own archived documentation: 3ASC25H241 = DASD 001 = 530 V / 25 A thyristor module, without a fan.Do not purchase it based on listings that call it a digital-input module. Before installation, verify the cabinet type, motor voltage/current, thyristor control electronics, X31 system cable, terminal arrangement, and thermal conditions.
