DASA110
Power Supply Module · 3ASC25H271 · 24 / 110 V DC circuits
Lifecycle note: Preserve the ASTAT assembly and grounding configuration. Treat the documented DC ranges as troubleshooting measurements, not replacement input-voltage ratings.
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ABB DASA110, order 3ASC25H271, is the power supply module listed in the ABB ASTAT spare-parts documentation for DARA1000, DARA1001 and DARA1010 assemblies. The associated service instructions distinguish nominal 24 V DC and 110 V DC circuits, each with its own circuit breaker and measurement points.
The 24 V circuit is checked between X2:2 and X2:4; the 110 V circuit is checked between X2:6 and X2:7. The manual gives troubleshooting limits of 17–33 V DC and 55–140 V DC respectively. These figures describe service measurements, not an AC input range or regulated-output adjustment specification. The grounding arrangement must be established before any test.
For replacement planning, identify the installed DARA assembly, wiring revision, breaker arrangement and complete spare-part label. Qualified maintenance personnel should isolate equipment and follow the approved site procedure when investigating downstream loads. Suppliers and MRO buyers should purchase against verified order 3ASC25H271 and resolve any inconsistent customer cross-reference before dispatch.
| Manufacturer | ABB |
|---|---|
| Model | DASA110 (DASA 110) |
| Order number | 3ASC25H271 |
| Module type | ASTAT power supply module |
| Documented assemblies | DARA 1000, DARA 1001, DARA 1010 |
| DC circuits | 24 V DC and 110 V DC |
| 24 V circuit measurement range | 17–33 V DC (manual troubleshooting limits) |
| 24 V measurement terminals | X2:2 (+), X2:4 (−) |
| 24 V circuit protection | MCB F1 |
| 24 V grounding | Directly grounded |
| 110 V circuit measurement range | 55–140 V DC (manual troubleshooting limits) |
| 110 V measurement terminals | X2:6 (+), X2:7 (−) |
| 110 V circuit protection | MCB F2 |
| 110 V grounding | Directly grounded or floating, according to system wiring |
Preserve the installed ASTAT power-distribution and grounding arrangement. Confirm the DARA assembly, wiring revision and exact spare-part identity before replacement.
ABB specifies X2:2 as positive and X2:4 as negative. Its troubleshooting procedure gives a 17–33 V DC measurement range. These are service-check limits, not a selectable regulated-output setting. Qualified personnel must follow the approved electrical safety procedure.
The ASTAT manual permits grounded or floating 110 V DC arrangements. Establish the installed grounding scheme from the drawings; a measurement to cabinet earth alone cannot be assumed to represent a floating circuit. The specified differential points are X2:6 (+) and X2:7 (−).
F1 protects the documented 24 V DC circuit. Under the approved isolation procedure, investigate connected consumers and wiring before declaring the power supply faulty. Do not bypass the breaker or repeatedly re-energize an unresolved fault.
F2 belongs to the 110 V DC circuit, while F1 belongs to the 24 V circuit. The manual also refers to 110 V OK and earth-fault indications on DATX110. Record which circuit and indication are affected so the work order does not confuse the two supplies.
The ABB spare-parts table lists DASA110, order 3ASC25H271, for DARA1000, DARA1001 and DARA1010. This identifies the documented assembly family; a system integrator must still match the installed wiring and revision before replacement.
Not by itself. This product is identified against ABB order 3ASC25H271. The alternative search phrase is not presented as a verified interchangeable order number. Resolve any discrepant customer reference against the physical nameplate and manufacturer documentation before accepting an order.
No. In the cited manual it is the troubleshooting measurement range for the nominal 110 V DC circuit at X2:6 and X2:7. It must not be relabeled as an AC input specification or used to select the upstream supply.
Keep photographs of the DASA110 and 3ASC25H271 identification, terminal condition, breaker markings and revision labels. Link any qualified test record to that specific unit, and retain the receiving date and protected storage record for MRO stock control.
Send the model, complete part number, quantity, destination and nameplate photo. We will verify identification details before confirming availability and lead time.
Official PDF extract: DASA110 / 3ASC25H271 — Sales PLC Cover & ABB Manual. File size is below 1 MB; verify the exact installed hardware and configuration before use.
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