Siemens 3VA5450-7EC31-0AA0 Molded Case Circuit Breaker
- 500A
- 3 Pole
- Panel Mount
Siemens
3VA5450-7EC31-0AA0
Molded Case Circuit Breaker
Brand
Siemens
SKU
3VA5450-7EC31-0AA0
Quantity
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Siemens 3VA5450-7EC31-0AA0 - 500A 3 Pole Molded Case Circuit Breaker
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Description
Engineered for demanding industrial environments, the Siemens 3VA5450-7EC31-0AA0 provides reliable overcurrent protection in a 600A frame size. This 500A, 3-pole MCCB utilizes a TM230 thermal-magnetic trip unit for precise LI protection. It installs into Siemens 3VA panelboards and switchboards, serving as a direct replacement for legacy HLXD63B500 breakers when paired with a mounting kit.Specifications
| Brand | Siemens |
|---|---|
| Part Number | 3VA5450-7EC31-0AA0 |
| Series | 3VA5 |
| Amperage | 500A |
| 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 |
| Wire Gauge | 2/0 AWG-500 kcmil |
| Max Wire | 500 kcmil |
| Min Wire | 2/0 AWG |
| 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, Padlock Attachment, Handle Lock |
|---|---|
| Accessories | Nut Keeper Kit |
| Standards | IEC 60947-2, UL 489, CSA C22.2 No. 5 |
| Approval | ABS, CE, CSA, cULus, DNV, EAC, GL, Lloyd's, RCM, UL, VDE |
| Temp Rating | -25C to 70C |
| Construction Features | HACR Rated, Current Limiting, Reverse Feed, Non-Interchangeable Trip, Trip-Free Mechanism |
Product FAQs
6 answersWhat types of enclosures or panels is the 3VA5450-7EC31-0AA0 compatible with?
This 500A breaker is designed for panel mount installation in Siemens 3VA panelboards and switchboards.
What wire sizes are accepted by the 3VA5450-7EC31-0AA0?
The terminals on this breaker accept wire gauges ranging from 2/0 AWG up to 500 kcmil. Ensure proper torque specifications are followed during installation as outlined by Siemens.
How does the trip unit function on the 3VA5450-7EC31-0AA0?
It features a thermal-magnetic trip unit with LI (Long-Time and Instantaneous) protection. The thermal overload protection is fixed, while the magnetic short-circuit protection is adjustable to suit your specific application needs.
What safety standards does the Siemens 3VA5450-7EC31-0AA0 meet?
As part of the SENTRON 3VA series, this breaker is UL Listed (UL 489) for use in North American power distribution systems.
Can the 3VA5450-7EC31-0AA0 be used to replace older Siemens 500A breakers?
It can replace legacy Siemens 500A breakers in certain applications, but because the 3VA54 frame has specific dimensions, you must verify that your existing panelboard or switchboard hardware accepts the newer 3VA5 series footprint.
Is the Siemens 3VA5450-7EC31-0AA0 HACR rated?
Yes, this breaker is HACR rated, making it suitable for use with heating, air conditioning, and refrigeration equipment.
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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