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Siemens 3VA5445-5EF31-0AA0 Molded Case Circuit Breaker
- 450A
- 3 Pole
- Panel Mount
Siemens
3VA5445-5EF31-0AA0
Molded Case Circuit Breaker
Brand
Siemens
SKU
3VA5445-5EF31-0AA0
Quantity
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Siemens 3VA5445-5EF31-0AA0 - 450A 3 Pole Molded Case Circuit Breaker
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Description
Built for commercial power distribution, the Siemens 3VA5445-5EF31-0AA0 is a 450A molded case circuit breaker from the SENTRON 3VA5 series. This panel-mount unit integrates into Siemens 3VA panelboards. With a retrofit kit, it functions as a reliable replacement for discontinued LXD63B450 breakers. Delivering 35 kAIC at 480VAC, it features a TM240 thermal-magnetic trip unit. This allows precise coordination via adjustable long-time and instantaneous settings.Specifications
| Brand | Siemens |
|---|---|
| Part Number | 3VA5445-5EF31-0AA0 |
| Series | 3VA5 |
| Amperage | 450A |
| Poles | 3 |
| Mounting Style | Panel Mount |
| Voltage | 600VAC, 500VDC |
| Phase | 3 |
| AIC Rating | 85kA @ 240VAC, 35kA @ 480VAC, 18kA @ 600VAC |
| Amperage Range | 315-450A |
|---|
| Frame Type | 3VA54 |
|---|---|
| Terminal Type | Lugs |
| For Use With | Siemens 3VA Panelboards, Switchboards |
| Trip Technology | Thermal Magnetic |
|---|---|
| Trip Function Code | LI |
| Trip Function | Long-Time, Instantaneous |
| Trip Adjustability | Adjustable Thermal, Adjustable Magnetic |
| Available Options | Auxiliary Switch, Alarm Switch, Shunt Trip, Undervoltage Release, Motor Operator, Rotary Handle, Padlock Attachment |
|---|---|
| Accessories | None (No Lugs Included) |
| Standards | IEC 60947-2, UL 489, HACR |
| Approval | ABS, CE, CSA, EAC, IEC, RCM, UL, VDE |
| Temp Rating | -25C to 70C |
| Construction Features | Reverse Feed, HACR Rated |
Product FAQs
7 answersDoes the 3VA5445-5EF31-0AA0 come with line and load lugs installed?
No, Siemens 3VA54 frame breakers are shipped standard without lugs. You must order lugs separately for field installation, or use catalog number 3VA5445-5EF36-0AA0 to get factory-installed standard lugs.
What is the adjustable trip range for the 3VA5445-5EF31-0AA0?
This breaker features a TM240 ATAM trip unit. The thermal overload protection is adjustable from 360A to 450A, and the instantaneous short-circuit protection is adjustable from 2250A to 4500A (5 to 10 times the continuous current rating).
Is this 3VA54 frame breaker suitable for reverse feed applications?
Yes, all Siemens 3VA5 thermal magnetic trip circuit breakers are UL listed for reverse feed applications.
Can this 3-pole breaker be used on 500V DC systems?
Yes, it is rated for up to 500V DC. When applying a 3-pole breaker on 500V ungrounded DC systems, the power supply must be connected in a series or zig-zag configuration through all three poles to ensure voltage is uniformly distributed.
What strap kit is required to mount this breaker in a Siemens P5 power panel?
To single mount a 3VA54 frame breaker in a Siemens P5 panelboard or switchboard, use the S3VA54TD copper strap kit.
How do I order this breaker with factory-installed nut keepers for switchboard mounting?
To get factory-installed nut keepers instead of the standard lugless configuration, you will need to order catalog number 3VA5445-5EF32-0AA0.
Is the 3VA5445-5EF31-0AA0 a 100% rated circuit breaker?
No, this breaker is standard rated for continuous operation at 80% of its maximum capacity.
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Reviews
Review summary
Customers rate this product 4.8 out of 5 based on 8 reviews.
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Rating
8 reviews
- 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
- DTDENNIS T.Verified BuyerReviewingSiemens 3VA5220-6ED31-0AA0 - 200A 3 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars1/15/26Breaker Purchase
Great price and fast shipment