Siemens 3VA6340-7HN31-0AA0 Molded Case Circuit Breaker
- 400A
- 3 Pole
- Panel Mount
Siemens
3VA6340-7HN31-0AA0
Molded Case Circuit Breaker
Brand
Siemens
SKU
3VA6340-7HN31-0AA0
Quantity
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Siemens 3VA6340-7HN31-0AA0 - 400A 3 Pole Molded Case Circuit Breaker
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Description
Engineered for commercial and industrial power distribution, the Siemens 3VA6340-7HN31-0AA0 is a 400A, 3-pole molded case circuit breaker. It installs into Siemens P3, P4, and P5 panelboards, and serves as a replacement for legacy CJD63B400 breakers when using a retrofit kit. This 3VA6 frame features an ETU350 electronic trip unit with adjustable LSI protection. With a 100kAIC rating at 480V, it provides reliable, current-limiting performance and true RMS sensing.Specifications
| Brand | Siemens |
|---|---|
| Series | 3VA6 |
| Amperage | 400A |
| Poles | 3 |
| Mounting Style | Panel Mount |
| Voltage | 240VAC, 480Y/277VAC, 480VAC, 600Y/347VAC, 600VAC |
| Phase | 3 |
| AIC Rating | 200kA @ 240VAC, 100kA @ 480Y/277VAC, 100kA @ 480VAC, 35kA @ 600Y/347VAC, 35kA @ 600VAC |
| Amperage Range | 160-400A |
|---|
| Terminal Type | Lugs |
|---|---|
| For Use With | Siemens P3, P4, P5 Panelboards, Switchboards, Motor Control Centers |
| Trip Technology | Electronic Trip |
|---|---|
| Trip Function Code | LSI |
| Trip Function | Long-Time, Short-Time, Instantaneous |
| Trip Adjustability | Adjustable |
| Available Options | Auxiliary Switch, Alarm Switch, Shunt Trip, Undervoltage Release, Motor Operator, Rotary Handle, Lugs, Nut Keeper Kit |
|---|---|
| Accessories | Nut Keeper Kit |
| Standards | CSA C22.2 No. 5, EN 60947-2, IEC 60947-2, NEMA AB 1, UL 489 |
| Approval | ABS, CE, CSA, cULus, EAC, IEC, RCM, UL, VDE |
| Temp Rating | -25C to 70C |
| Construction Features | HACR Rated, Current Limiting, Reverse Feed, True RMS Sensing |
Product FAQs
8 answersWhich Siemens panelboards can accept the 3VA6340-7HN31-0AA0 breaker?
This breaker is designed for use in Siemens P3, P4, and P5 panelboards, as well as compatible Siemens switchboards and motor control centers.
How does the LSI electronic trip unit function on this 400A breaker?
The LSI designation indicates adjustable settings for Long-Time (overload), Short-Time (short circuit with intentional delay for coordination), and Instantaneous (immediate short circuit) protection, allowing precise coordination in complex electrical systems.
Are the trip settings on the 3VA6340-7HN31-0AA0 field adjustable?
Yes, the solid state electronic LSI trip unit features fully adjustable settings, allowing electricians to tailor the protection curve to the specific load and coordination requirements of the facility.
Is this breaker suitable for high fault current applications at 480V?
Yes, it carries a 100kA interrupting rating at 480VAC and 480Y/277VAC, making it suitable for commercial and industrial systems with high available fault currents. It also offers up to 200kA at 240VAC.
What advantage does the electronic trip unit provide over thermal-magnetic alternatives?
The solid state electronic trip unit offers higher accuracy, repeatability, and adjustable LSI settings, which are critical for selective coordination and arc flash mitigation in commercial switchboards.
Which breaker frame family does the 3VA6340-7HN31-0AA0 belong to?
It is part of the Siemens SENTRON 3VA frame group, specifically designed to integrate with modern Siemens distribution equipment requiring electronic trip capabilities.
Does the 3VA6340-7HN31-0AA0 include integrated ground fault protection?
No, this specific model features an LSI trip unit (Long-Time, Short-Time, Instantaneous) and does not include the G (Ground Fault) function. If equipment ground fault protection is required, an LSIG variant must be sourced.
Can this breaker be used in DC voltage applications?
No, the 3VA6340-7HN31-0AA0 is rated strictly for AC current applications up to 600VAC.
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Reviews
Review summary
Customers rate this product 5.0 out of 5 based on 2 reviews.
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Rating
2 reviews
- PMPete M.Verified BuyerRated 5 out of 5 stars9/17/26Great price and avail
Great price and showed up when I needed it.
- RSRochelle S.Verified BuyerReviewingSiemens 3VA6225-5HL31-0AA0 - 250A 3 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars10/2/25Smooth Transaction, Great Seller, Solid product
I've ordered from SuperBreakers a couple times over the years. They have great customer service, knowledgeable employees, and I got my breaker in the expected timeline. I HIGHLY RECOMMEND this shop if you are a fellow circuit breaker enthusiast!
Siemens makes a reliable product. Y'all already know.