The 400 A rating holds flat from 40 °C to 50 °C, then derates linearly to 367 A at 70 °C (–). That matters for a panel with poor airflow — you still get 392 A at 55 °C, which covers most 400 A bus applications without upsizing. The 220 kA at 240 V is the headline interrupting rating; at 415 V it's still 154 kA, and at 690 V it drops to 17 kA, so verify the available fault current at your system voltage. Maximum power dissipation is 94.6 W. In a sealed enclosure that heat must be factored into the thermal budget; in a ventilated panel it's manageable for a 400 A frame.
Siemens SENTRON 3VA1340-6EF32-0BC0 MCCB, 400 A, 3-Pole, 220
MPN3VA1340-6EF32-0BC0
Siemens SENTRON 3VA1340-6EF32-0BC0, molded case circuit breaker, 3-pole, 400 A at 40 °C, breaking capacity 220 kA at 240 V, line protection design, with undervoltage release and 2 auxiliary switches HQ.
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 |
| Basic switch (supplied) ref. | 3VA13406EF320AA0 |
| Integrated auxiliary / alarm switch ref. | 3VA9988-0AA12 |
| 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 | 392 A |
| Current at 60 °C | 384 A |
| Current at 65 °C | 376 A |
| Current at 70 °C | 367 A |
| Switching capacity class | H |
| Breaking capacity at 240 V | 220 kA |
| Breaking capacity at 415 V | 154 kA |
| Breaking capacity at 440 V | 154 kA |
| Breaking capacity at 500 V | 121 kA |
| Breaking capacity at 690 V | 17 kA |
| Power loss, max. | 94.6 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 | Yes |
| Voltage trigger | No |
| Trip indicator | No |
| 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 | 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
What are the key ratings for 3VA1340-6EF32-0BC0?
400 A continuous at 40 °C, 3-pole, breaking capacity 220 kA at 240 V, rated insulation voltage 800 V.
What is the depth of 3VA1340-6EF32-0BC0?
110 mm depth.
What is the width of 3VA1340-6EF32-0BC0?
138 mm width.
Where can I buy 3VA1340-6EF32-0BC0?
Sourced and quoted to order against an RFQ through independent distribution; availability and current pricing confirmed at quote time.
MPN
3VA1340-6EF32-0BC0