The 3VA2340-5KQ32-0AA0 is a SENTRON molded case circuit breaker (MCCB) rated for 400 A continuous current at 40 °C, with a full-scale value of 400 A and an adjustable thermal-magnetic trip range from 80 A to 400 A. That 400 A continuous rating holds flat through 50 °C — only starts derating at 55 °C (375 A) and drops to 300 A at 70 °C, so in a warm enclosure you still have headroom. The interrupting capacity is the headline: 187 kA at 240 V, 121 kA at 415 V, 75.6 kA at 500 V, and still 7.5 kA at 690 V. Three-pole, line-protection design, with communication function for remote monitoring or trip-event capture.
Siemens SENTRON 3VA2340-5KQ32-0AA0 MCCB, 400 A, 187 kA at 24
MPN3VA2340-5KQ32-0AA0
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Siemens SENTRON molded case circuit breaker, 3VA2340-5KQ32-0AA0, 3-pole, 400 A continuous, 187 kA breaking capacity at 240 V, line protection design with communication function.
Source DocumentedChannel stated on listing & quote
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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 | 375 A |
| Current at 60 °C | 350 A |
| Current at 65 °C | 325 A |
| Current at 70 °C | 300 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 | 7.5 kA |
| Power loss, max. | 96 W |
| Parameter | Value |
|---|---|
| Overcurrent release (trip unit) type | ETU860 |
| 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 3VA2340-5KQ32-0AA0?
This part is sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time.
What is the breaking capacity of 3VA2340-5KQ32-0AA0 at different voltages?
At 240 V it interrupts 187 kA, at 415 V and 440 V it interrupts 121 kA, at 500 V it interrupts 75.6 kA, and at 690 V it interrupts 7.5 kA.
What is the continuous current rating and how does it derate with temperature?
Continuous current rating is 400 A from 40 °C to 50 °C. It derates to 375 A at 55 °C, 350 A at 60 °C, 325 A at 65 °C, and 300 A at 70 °C.
MPN
3VA2340-5KQ32-0AA0