Full 125 A rating holds from 40 °C to 50 °C; above that it derates linearly to 114 A at 70 °C. Dimensions are 101.6 mm wide by 130 mm tall by 70 mm deep — a standard 4-pole MCCB footprint for DIN-rail or screw-mount panel integration. IP40 on the front face keeps out tool drops and dust during commissioning; the rear and sides are open for heat dissipation inside the enclosure. Power dissipation at full load is 28.1 W maximum. In a multi-breaker lineup, sum the losses to size the enclosure ventilation — a row of four of these adds over 112 W of heat inside the cabinet.

Siemens 3VA1112-6EE42-0AA0 SENTRON MCCB, 125 A, 4-Pole, 220
Siemens SENTRON 3VA1112-6EE42-0AA0, Molded case circuit breaker, Line protection, 4-pole, 125 A, TM220 release, 220 kA at 240 V.
Specifications
| Parameter | Value |
|---|---|
| Product designation | Molded case circuit breaker |
| Brand / range | SENTRON |
| Product version | Line protection |
| Parameter | Value |
|---|---|
| Number of poles | 4 |
| Current at 40 °C | 125 A |
| Current at 45 °C | 125 A |
| Current at 50 °C | 125 A |
| Current at 55 °C | 122 A |
| Current at 60 °C | 120 A |
| Current at 65 °C | 117 A |
| Current at 70 °C | 114 A |
| Switching capacity class | H |
| Breaking capacity at 240 V | 220 kA |
| Breaking capacity at 415 V | 154 kA |
| Breaking capacity at 440 V | 76 kA |
| Breaking capacity at 500 V | 17 kA |
| Breaking capacity at 690 V | 17 kA |
| Power loss, max. | 28.1 W |
| Parameter | Value |
|---|---|
| Overcurrent release (trip unit) type | TM220 |
| Overcurrent protection function | LI |
| Ground-fault monitoring | Without |
| Parameter | Value |
|---|---|
| Main circuit connector arrangement | Front terminal |
| Protection class (IP), front | IP40 |
| Parameter | Value |
|---|---|
| Communication function | No |
| Measurement function | No |
| Motor drive option | Yes |
| Auxiliary CO contacts | 0 |
| Parameter | Value |
|---|---|
| Operating temperature, max. | 70 °C |
| Operating temperature, min. | -25 °C |
| Storage temperature, max. | 80 °C |
| Storage temperature, min. | -40 °C |
| Parameter | Value |
|---|---|
| Height | 130 mm |
| Width | 101.6 mm |
| Depth | 70 mm |
| Height (in) | 5.1 in |
| Width (in) | 4 in |
| Depth (in) | 2.8 in |
Product details
Frequently asked questions
What is the interrupting rating of this MCCB at 240 V?
It is rated 220 kA at 240 V AC. At 415 V the rating is 154 kA, at 440 V it is 76 kA, and at 500 V or 690 V it holds 17 kA.
Will 3VA1112-6EE42-0AA0 drop into a panel specified for 3VA1112-5EE32-0AA0?
Both are 4-pole 125 A SENTRON MCCBs in the same 3VA1112 frame, so the footprint and mounting pattern are identical. The difference is in the release and accessory configuration — the -6EE42-0AA0 carries a TM220 release. Verify the existing panel's wiring and accessory slots before swapping, but the mechanical fit is the same.
Where can I buy 3VA1112-6EE42-0AA0?
This part is sourced to order against an RFQ through independent industrial-automation distribution. Submit an RFQ for current pricing and availability; stock levels and lead time are confirmed at quote time.