Siemens 3VA5450-7EF31-0AA0 Molded Case Circuit Breaker
- 500A
- 3 Pole
- Panel Mount
Siemens
3VA5450-7EF31-0AA0
Molded Case Circuit Breaker
Brand
Siemens
SKU
3VA5450-7EF31-0AA0
Quantity
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Siemens 3VA5450-7EF31-0AA0 - 500A 3 Pole Molded Case Circuit Breaker
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Description
Built for versatile power distribution, the Siemens 3VA5450-7EF31-0AA0 is a 500A, 3-pole MCCB in a 600A frame. It utilizes a TM240 trip unit with adjustable thermal and magnetic settings for customized LI protection. It installs into Siemens panelboards and switchboards, serving as a direct replacement for legacy CLD63B500 units. Lugs are not included.Specifications
| Brand | Siemens |
|---|---|
| Series | 3VA5 |
| Amperage | 500A |
| Poles | 3 |
| Mounting Style | Panel Mount |
| Voltage | 600VAC, 500VDC |
| Phase | 3 |
| AIC Rating | 200kA @ 240VAC, 100kA @ 480VAC, 35kA @ 600VAC |
| Amperage Range | 400-500A |
|---|
| Frame Type | 3VA5 |
|---|---|
| Terminal Type | Lugs |
| For Use With | Siemens Panelboards, Switchboards |
| Trip Technology | Thermal Magnetic |
|---|---|
| Trip Function Code | LI |
| Trip Function | Long-Time, Instantaneous |
| Trip Adjustability | Adjustable Thermal, Adjustable Magnetic |
| Available Options | Shunt Trip, Auxiliary Switch, Undervoltage Release, Alarm Switch, Motor Operator |
|---|---|
| Accessories | Lugs Not Included |
| Standards | CSA C22.2 No. 5, IEC 60947-2, UL 489 |
| Approval | ABS, CE, CSA, cULus, EAC, RCM, UL, VDE |
| Temp Rating | -25C to 70C |
| Construction Features | HACR Rated, Reverse Feed |
Product FAQs
7 answersWhat is the adjustable thermal trip range for this 500A breaker?
The TM240 trip unit features an adjustable thermal setting (Ir) that can be dialed from 350A to 500A to match your specific load requirements.
What is the adjustable magnetic trip range for the 3VA5450-7EF31-0AA0?
The adjustable magnetic short-circuit protection (Ii) can be set between 5 and 10 times the continuous current rating, which corresponds to 2500A to 5000A.
Can the Siemens 3VA5450-7EF31-0AA0 be reverse fed?
Yes, all Siemens 3VA5 thermal-magnetic molded case circuit breakers are UL listed for reverse feed applications.
How should this breaker be wired for 500VDC applications?
When applying this 3-pole breaker on 500V ungrounded DC systems, the power supply must be connected in a series zig-zag configuration across the poles to ensure voltage is uniformly distributed.
What type of trip unit is installed in this breaker?
It is equipped with a TM240 ATAM (Adjustable Thermal, Adjustable Magnetic) trip unit, providing reliable long-time and instantaneous (LI) protection.
What does the Class C designation mean for this 3VA5 breaker?
The Class C designation indicates its high interrupting capacity, specifically rated for 100kA at 480VAC and 200kA at 240VAC, making it suitable for industrial systems with high available fault currents.
What frame size does the 3VA5450-7EF31-0AA0 belong to?
This breaker is built on the Siemens 3VA54 frame, which has a maximum capacity of 600A, though this specific model is factory set for a 500A continuous current rating.
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Reviews
Review summary
Customers rate this product 4.8 out of 5 based on 9 reviews.
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Rating
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