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ABB · Tmax T2
T25DU65 is an ABB circuit breaker with Number of poles 3P / 4P (selectable); Rated operational voltage up to 690 V AC / 500 V DC; Breaking capacity Icu/Ics 25 kA at 400 V AC. It is used in distribution boards, motor protection circuits, panel feeders where the installed unit is matched to the original catalog number and a compact, documented part is required.
| Electrical | |
| Rated operational voltage | up to 690 V AC / 500 V DC |
|---|---|
| Rated insulation voltage Ui | 800 V |
| Rated impulse withstand Uimp | 8 kV |
| Breaking capacity Icu/Ics | 25 kA at 400 V AC |
| Number of poles | 3P / 4P (selectable) |
| I/O and communication | |
| Communication ports | Modbus, PROFINET, Ethernet |
| Mechanical | |
| Mounting | DIN rail / panel |
| Enclosure rating | IP20 (IEC 60529) |
| Environment and compliance | |
| Operating temperature | 0...+55 °C (IEC 60068-2-1) |
| Certifications | CE, UL, CSA, CCC |
Values follow the ABB Tmax T2 specification for this catalog number; parameters not confirmed for this variant are omitted rather than estimated.
| ABB Tmax T2 variants | |||
| Catalog number | Breaking capacity Icu/Ics | Rated operational voltage | |
|---|---|---|---|
| T25DU65 (this page) | 25 kA at 400 V AC | up to 690 V AC / 500 V DC | |
| T2S160-TMD50-500 | 6 kA / 10 kA (IEC 60898) | up to 690 V AC / 500 V DC | |
All variants share the same Tmax T2 footprint and terminal layout; the columns above show where they differ. Selecting a different catalog number changes the electrical interface, not the mounting.
The T25DU65 is the device-level element in an ABB circuit breaker installation. It receives the field signals and control supply listed above — up to 690 V AC / 500 V DC — and switches or conditions the load within the up to 690 V AC / 500 V DC ratings shown in the Specifications table. Wiring and protective devices are sized to those same numbers, not to a generic assumption.
Typical installations place it in distribution boards, motor protection circuits, panel feeders, where the unit is matched to the original catalog number and the enclosure provides DIN rail / panel support. Record the catalog number and revision from the nameplate of the installed unit before specifying a like-for-like spare.
Q.What supply does this device require?
It requires up to 690 V AC / 500 V DC. Size the supply source to the same rating shown in the Specifications table.
Q.What are the key electrical ratings?
The confirmed ratings include up to 690 V AC / 500 V DC and CE, UL, CSA, CCC marking. Cross-check them against the installed unit's nameplate.
Q.How is this device mounted?
It mounts by DIN rail / panel. Confirm the cutout or rail before ordering a like-for-like spare.
Q.What is the operating temperature range?
The confirmed operating range is 0...+55 °C (IEC 60068-2-1). Panels running beyond it need derated sizing.
Q.What replaces a unit that is no longer in production?
For a like-for-like spare, record the catalog number and revision from the nameplate; a current-production equivalent is identified by matching function and ratings.
Standard (US & Canada, tracked courier): delivered in 5–8 business days. In-stock items are processed within 2–4 business days. USD 25 flat rate on orders under $500.00; free on orders of $500.00 and above.
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Non-Stock / On-Order items ship on request: dispatch time is confirmed before your order — see our Shipping Policy. Shipping charges and available services are displayed at checkout. See the Shipping Policy for details.
Every product is covered by a 12-month seller warranty provided by SHLY-PLC, effective from the date of delivery, against defects in materials and workmanship under normal use.
This warranty does not cover damage from misuse, improper installation, power surges, neglect, unauthorized repair, or normal wear and tear. See our Return Policy for warranty-claim instructions.
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