Siemens 3VA5340-5EC31-2AA0 Molded Case Circuit Breaker
- 400A
- 3 Pole
- Unit Mount
Quantity
Siemens 3VA5340-5EC31-2AA0 - 400A 3 Pole Molded Case Circuit Breaker
New
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Description
The Siemens 3VA5340-5EC31-2AA0 molded case circuit breaker provides overload and short-circuit protection. Rated at 400A, it has 3 poles, 600VAC and 600VDC ratings, and 35kA interrupting capacity at 480VAC. The 3VA53 frame belongs to the 3VA5 series and uses unit mounting with lugs. Its thermal magnetic trip provides fixed thermal and adjustable magnetic settings for long-time and instantaneous protection. It is HACR rated with CE, CSA, UL and VDE approvals.Specifications
| Brand | Siemens |
|---|---|
| Part Number | 3VA5340-5EC31-2AA0 |
| Series | 3VA5 |
| Amperage | 400A |
| Poles | 3 |
| Mounting Style | Unit Mount |
| Voltage | 240VAC, 480VAC, 600VAC, 250VDC, 500VDC, 600VDC |
| Phase | 3 |
| AIC Rating | 85kA @ 240VAC, 35kA @ 480VAC, 18kA @ 600VAC, 50kA @ 250VDC, 50kA @ 500VDC, 50kA @ 600VDC |
| Frame Type | 3VA53 |
|---|---|
| Terminal Type | Lugs |
| Trip Technology | Thermal Magnetic |
|---|---|
| Trip Function Code | LI |
| Trip Function | Long-Time, Instantaneous |
| Trip Adjustability | Fixed Thermal, Adjustable Magnetic |
| Available Options | Alarm Switch, Auxiliary Switch, Motor Operator, Shunt Trip, Undervoltage Release |
|---|---|
| Standards | IEC 60947-2, UL 489 |
| Approval | CE, CSA, UL, VDE |
| Temp Rating | -25C to 70C |
| Construction Features | HACR Rated |
Product FAQs
7 answersWhat does the 400A rating mean when selecting Siemens 3VA5340-5EC31-2AA0?
The 400A rated current is a selection value for coordinating the breaker with the circuit load and conductor ampacity. Evaluate it separately from the interrupting rating, which addresses available fault current.
Which trip settings can I adjust?
The thermal overload setting is fixed, while the magnetic instantaneous setting is adjustable. The thermal-magnetic trip provides long-time protection for sustained overloads and instantaneous protection for short circuits, so adjustment applies to the magnetic pickup rather than the thermal setting.
How do I select this breaker for an AC circuit's available fault current?
The AC interrupting ratings are 85kA at 240VAC, 35kA at 480VAC, and 18kA at 600VAC. Compare the available fault current at the installation point with the interrupting rating at the circuit voltage; it must not exceed that rating.
What ratings should I check when selecting this breaker for DC service?
The rated DC voltage is 600VDC, with a 50kA interrupting rating at 250VDC, 500VDC, and 600VDC. Check both the circuit voltage and available fault current when selecting it for DC service.
What mounting and termination details should I account for during installation?
This is a unit-mount breaker with lug terminals and a depth of 4.33 in. Account for that depth in the equipment layout and plan conductor terminations around the lugs.
What temperature range should I consider for the installation environment?
The temperature rating is -25C to 70C. Compare the expected temperature where the breaker will be installed with this range when planning the installation.
What does the HACR rating mean for equipment selection?
HACR refers to heating, air-conditioning, and refrigeration applications. This breaker is HACR rated, making that feature relevant when evaluating breaker requirements for those applications.
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Reviews
Review summary
Customers rate this product 4.8 out of 5 based on 9 reviews.
- MRMark R.Verified BuyerReviewingSiemens 3VA5290-5EC31-0AA0 - 90A 3 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars11/6/26Breaker from SuperBreakers
SuperBreakers had what I needed and got it to me very Fast.
- EAEdward A.Verified BuyerReviewingSiemens 3VA5112-5EC31-0AA0 - 125A 3 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars9/11/26Quick Shipping
Instock and quick free shipping over a $100
- JFJustin F.Verified BuyerReviewingSiemens 3VA5450-5EC31-0AA0 - 500A 3 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars9/2/26SIEMENS BREAKER WAS SENT NEXT DAY...
ORDER CAME WHEN IT WAS PROMISSED AND WAS CORRECT... HAPPY CUSTOMER.
THANK YOU,
JUSTIN
- GMGary M.Verified BuyerRated 4 out of 5 stars6/19/26Hard to find Siemens breaker
Great product at a fair price
- RJRene J.Verified BuyerReviewingSiemens 3VA5212-6EF31-0AA0 - 125A 3 Pole Molded Case Circuit BreakerI recommend this productRated 4 out of 5 stars4/13/26Siemens 3VA5212-6EF31-0AA0
Item arrived quickly and in perfect condition