The Siemens SENTRON 3VA2340-5HN42-0KL0 is a 4-pole molded case circuit breaker (MCCB) rated for 400 A continuous current at 40 °C, configured for line protection with an ETU350 electronic trip unit. It carries a breaking capacity of 187 kA at 240 V, stepping down to 121 kA at 415 V and 440 V, 75.6 kA at 500 V, and 17 kA at 690 V — figures that tell you the fault-clearing headroom at each voltage level, not just a single number. The thermal derating curve is honest: full 400 A holds through 50 °C, then drops to 385 A at 55 °C, 370 A at 60 °C, and 355 A at 65 °C, so if this breaker sits in a warm enclosure or near radiant heat from mill drives, you size the load against the derated value, not the nameplate.
Siemens 3VA2340-5HN42-0KL0 SENTRON MCCB, 400 A, 4-Pole, Line
MPN3VA2340-5HN42-0KL0
Siemens SENTRON molded case circuit breaker, 3VA2340-5HN42-0KL0, 4-pole, 400 A rated continuous current, line protection version, 187 kA breaking capacity at 240 V.
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 |
| Product version | Line protection |
| Basic switch (supplied) ref. | 3VA2340-5HN42-0AA0 |
| Integrated auxiliary / alarm switch ref. | 3VA9988-0AB22 |
| Parameter | Value |
|---|---|
| Number of poles | 4 |
| Current at 40 °C | 400 A |
| Current at 45 °C | 400 A |
| Current at 50 °C | 400 A |
| Current at 55 °C | 385 A |
| Current at 60 °C | 370 A |
| Current at 65 °C | 355 A |
| Current at 70 °C | 340 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 | 17 kA |
| Power loss, max. | 96 W |
| Parameter | Value |
|---|---|
| Overcurrent release (trip unit) type | ETU350 |
| Parameter | Value |
|---|---|
| Main circuit connection type | Lug terminal |
| Main circuit connector arrangement | Front terminal |
| Protection class (IP), front | IP40 |
| Parameter | Value |
|---|---|
| Undervoltage release | No |
| Voltage trigger | Yes |
| Trip indicator | Yes |
| Communication function | No |
| Measurement function | No |
| Motor drive option | Yes |
| Auxiliary CO contacts | 4 |
| 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 | 248 mm |
| Width | 184 mm |
| Depth | 110 mm |
Product details
Frequently asked questions
Where can I buy 3VA2340-5HN42-0KL0?
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 this MCCB at 415 V?
121 kA at 415 V. It also carries 187 kA at 240 V, 121 kA at 440 V, 75.6 kA at 500 V, and 17 kA at 690 V.
MPN
3VA2340-5HN42-0KL0