The 3VA1225-6EF32-0AG0: The 250 A rating holds flat from 40 °C to 50 °C; above that it derates smoothly to 223 A at 70 °C. That matters when the breaker lives in a crowded enclosure — if ambient inside the panel hits 60 °C, you lose 13 A of headroom. The auxiliary switch configuration is 1 auxiliary + 1 trip alarm (HP type), which gives a separate signal for fault vs. manual open.
Siemens 3VA1225-6EF32-0AG0 SENTRON MCCB, 250A, 220kA
MPN3VA1225-6EF32-0AG0
Siemens SENTRON 3VA1225-6EF32-0AG0, molded case circuit breaker, 3-pole, 250 A (40 °C), 220 kA at 240 V, TM240 thermal-magnetic release, line protection.
Source DocumentedChannel stated on listing & quote
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Worldwide DispatchDHL/FedEx — transit quoted per order
Independent China distributor & sourcing agent· Listing updated Sep 2026
Specifications
| Parameter | Value |
|---|---|
| Product designation | Molded case circuit breaker |
| Brand / range | SENTRON |
| Basic switch (supplied) ref. | 3VA12256EF320AA0 |
| Integrated auxiliary / alarm switch ref. | 3VA9988-0AB11 |
| Parameter | Value |
|---|---|
| Number of poles | 3 |
| Rated operational voltage Ue (AC) | 690 V |
| Rated insulation voltage Ui | 800 V |
| Current at 40 °C | 250 A |
| Current at 45 °C | 250 A |
| Current at 50 °C | 250 A |
| Current at 55 °C | 243 A |
| Current at 60 °C | 237 A |
| Current at 65 °C | 230 A |
| Current at 70 °C | 223 A |
| Switching capacity class | H |
| Breaking capacity at 240 V | 220 kA |
| Breaking capacity at 415 V | 154 kA |
| Breaking capacity at 440 V | 75.6 kA |
| Breaking capacity at 500 V | 30 kA |
| Breaking capacity at 690 V | 17 kA |
| Power loss, max. | 57 W |
| Parameter | Value |
|---|---|
| Overcurrent release (trip unit) type | TM240 |
| Overcurrent protection function | LI |
| Ground-fault monitoring | Without |
| Grounding protection function | No |
| Parameter | Value |
|---|---|
| Main circuit connection type | nut keeper kit on both ends |
| Main circuit connector arrangement | Front terminal |
| Protection class (IP), front | IP40 |
| Parameter | Value |
|---|---|
| Undervoltage release | No |
| Voltage trigger | No |
| Trip indicator | Yes |
| Communication function | No |
| Measurement function | No |
| Motor drive option | Yes |
| Auxiliary CO contacts | 2 |
| Parameter | Value |
|---|---|
| Operating temperature, max. | 70 °C |
| Operating temperature, min. | -25 °C |
| Storage temperature, max. | 80 °C |
| Storage temperature, min. | -40 °C |
| Parameter | Value |
|---|---|
| Mechanical service life (operating cycles), typ. | 20 000 |
| Height | 158 mm |
| Width | 105 mm |
| Depth | 70 mm |
| Height (in) | 6.22 in |
| Width (in) | 4.13 in |
| Depth (in) | 2.76 in |
Product details
Frequently asked questions
Where can I buy 3VA1225-6EF32-0AG0 and how do I get a price?
This part is sourced and quoted to order against an RFQ through independent distribution. Submit a request for quote; availability and current pricing are confirmed at quote time.
What is 3VA1225-6EF32-0AG0's interrupting rating at 240 V?
220 kA at 240 VAC. At 415 V it is 154 kA, at 500 V it is 30 kA, and at 690 V it is 17 kA.
What is the rated current of 3VA1225-6EF32-0AG0 at 40 °C?
250 A at 40 °C, holding flat through 50 °C, then derating to 223 A at 70 °C.
Will 3VA1225-6EF32-0AG0 drop into a panel specified around 5SQ2370-2YA05 without rewiring?
The 3VA1225-6EF32-0AG0 is a 3-pole MCCB with a 250 A TM240 release; the 5SQ2370-2YA05 is a different manufacturer's part. Mounting dimensions and bus-bar centers may differ — verify physical fit before substitution.
MPN
3VA1225-6EF32-0AG0