Siemens 3VA5445-7EC31-0AA0 Molded Case Circuit Breaker
- 450A
- 3 Pole
- Panel Mount
Siemens
3VA5445-7EC31-0AA0
Molded Case Circuit Breaker
Brand
Siemens
SKU
3VA5445-7EC31-0AA0
Quantity
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Siemens 3VA5445-7EC31-0AA0 - 450A 3 Pole Molded Case Circuit Breaker
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Description
Built for high-fault commercial environments, the Siemens 3VA5445-7EC31-0AA0 is a 450A, 3-pole molded case circuit breaker. It delivers robust long-time and instantaneous (LI) protection to safeguard critical infrastructure. Designed for seamless integration, this unit installs into Siemens 3VA panelboards. It is also an ideal replacement for legacy CLD63B450 breakers. Featuring a TM230 FTAM trip unit, it offers fixed thermal and adjustable magnetic settings with 100 kAIC at 480VAC.Specifications
| Brand | Siemens |
|---|---|
| Series | 3VA5 |
| Amperage | 450A |
| Poles | 3 |
| Mounting Style | Panel Mount |
| Voltage | 600VAC, 500VDC |
| Phase | 3 |
| AIC Rating | 200kA @ 240VAC, 100kA @ 480VAC, 35kA @ 600VAC |
| 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 | Fixed Thermal, Adjustable Magnetic |
| Available Options | Shunt Trip, Auxiliary Switch, Undervoltage Release, Alarm Switch, Motor Operator, Rotary Handle, Padlock Attachment |
|---|---|
| Accessories | None (No Lugs Included) |
| Standards | IEC 60947-2, UL 489, HACR |
| Approval | CE, CSA, EAC, IEC, UL, VDE |
| Temp Rating | -25C to 70C |
| Construction Features | HACR Rated |
Product FAQs
7 answersWhat types of panelboards are compatible with the Siemens 3VA5445-7EC31-0AA0?
This 450A breaker is designed for installation in Siemens P4 and P5 panelboards, as well as compatible Siemens switchboards.
What type of trip unit is included with this circuit breaker?
It features a TM230 thermal-magnetic trip unit, which provides fixed long-time (thermal) overload protection and adjustable instantaneous (magnetic) short-circuit protection.
Are the trip settings on the 3VA5445-7EC31-0AA0 adjustable?
Yes. The thermal overload protection is fixed at 450A, but the magnetic short-circuit protection is adjustable from 5 to 10 times the continuous current rating to coordinate with your specific system requirements.
What does the 7 in the 3VA5445-7EC31-0AA0 catalog number signify?
The 7 indicates that this breaker has a Class C breaking capacity, providing a high interrupting rating of 100kA at 480VAC and 35kA at 600VAC.
What frame size does the 3VA5445-7EC31-0AA0 belong to?
This breaker is part of the Siemens 3VA54 frame family, which is a 600A maximum frame size, configured here for a 450A continuous current rating.
Can this molded case circuit breaker be used in DC applications?
Yes, in addition to its AC ratings, this breaker is rated for use in direct current systems up to 500VDC.
Does this breaker provide ground fault protection?
No, the 3VA5445-7EC31-0AA0 features a TM230 trip unit with LI (Long-Time and Instantaneous) functions only. It does not include integrated ground fault protection.
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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