That flat thermal curve is unusual and simplifies panel design in warm enclosures. Its interrupting capacity hits 187 kA at 240 V, 121 kA at 415 V and 440 V, 75.6 kA at 500 V, and 9 kA at 690 V — so it handles high-fault scenarios on the low-voltage side while still clearing moderate faults at higher voltages. The 3-pole construction and motor-protection curve mean it tracks overloads and phase failures on pump, fan, or compressor loads without nuisance tripping. The breaker includes communication capability and a ground-fault monitoring version using summation current formation on the L-conductor, which lets it report status and fault conditions back to a control system — useful for zoned conveyor lines where a single fault shouldn't stop the whole sortation loop.
Siemens 3VA2440-5MQ32-0AA0 SENTRON MCCB, 400 A, 3-Pole, Moto
MPN3VA2440-5MQ32-0AA0
Active
Siemens SENTRON 3VA2440-5MQ32-0AA0, molded case circuit breaker, 3-pole, 400 A, motor protection design, 187 kA interrupting capacity at 240 V.
$970.28Ref. price · indicative, final on quote
Source DocumentedChannel stated on listing & quote
Condition PhotosReal unit photos / video on request
WhatsApp AnswersFast human replies for machine-down parts
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 |
| Parameter | Value |
|---|---|
| Number of poles | 3 |
| Rated operational voltage Ue (AC) | 690 V |
| Rated insulation voltage Ui | 800 V |
| Current at 40 °C | 400 A |
| Current at 45 °C | 400 A |
| Current at 50 °C | 400 A |
| Current at 55 °C | 400 A |
| Current at 60 °C | 400 A |
| Current at 65 °C | 400 A |
| Current at 70 °C | 400 A |
| Switching capacity class | M |
| Breaking capacity at 240 V | 187 kA |
| Breaking capacity at 415 V | 121 kA |
| Breaking capacity at 440 V | 121 kA |
| Breaking capacity at 500 V | 75.6 kA |
| Breaking capacity at 690 V | 9 kA |
| Power loss, max. | 63.5 W |
| Parameter | Value |
|---|---|
| Overcurrent release (trip unit) type | ETU860M |
| Overcurrent protection function | LSIG |
| Ground-fault monitoring | Summation current formation L-conductor |
| Grounding protection function | Yes |
| Parameter | Value |
|---|---|
| Main circuit connection type | on both sides nut keeper kit |
| Main circuit connector arrangement | Front terminal |
| Protection class (IP), front | IP40 |
| Parameter | Value |
|---|---|
| Undervoltage release | No |
| Voltage trigger | No |
| Trip indicator | No |
| Communication function | Yes |
| Measurement function | Yes |
| 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 |
|---|---|
| Mechanical service life (operating cycles), typ. | 20 000 |
| Height | 248 mm |
| Width | 138 mm |
| Depth | 110 mm |
| Height (in) | 9.76 in |
| Width (in) | 5.43 in |
| Depth (in) | 4.33 in |
Product details
Frequently asked questions
Where can I buy 3VA2440-5MQ32-0AA0 and how do I get a price?
This part is sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time — submit an RFQ for a firm price and lead time.
What is the interrupting capacity of this MCCB at 240 V?
At 240 V the interrupting capacity is 187 kA. At 415 V and 440 V it's 121 kA, at 500 V it's 75.6 kA, and at 690 V it's 9 kA.
MPN
3VA2440-5MQ32-0AA0