Siemens 3VA5145-5ED21-0AA0 Molded Case Circuit Breaker
- 45A
- 2 Pole
- Panel Mount
Siemens
3VA5145-5ED21-0AA0
Molded Case Circuit Breaker
Brand
Siemens
SKU
3VA5145-5ED21-0AA0
Quantity
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Siemens 3VA5145-5ED21-0AA0 - 45A 2 Pole Molded Case Circuit Breaker
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Description
Built for demanding commercial and industrial environments, this two-pole molded case circuit breaker utilizes a fixed TM210 thermal-magnetic trip unit for consistent current-limiting performance. The 45A device fits seamlessly into modern Siemens 3VA panelboards and switchboards, handling up to 35kAIC at 480VAC. It functions as an advanced upgrade for legacy ED42B045 breakers, bringing higher interrupting capacities and HACR/HID ratings to standard power distribution applications.Specifications
| Brand | Siemens |
|---|---|
| Series | 3VA5 |
| Amperage | 45A |
| Poles | 2 |
| Mounting Style | Panel Mount |
| Voltage | 240VAC, 480VAC, 600Y/347VAC, 250VDC |
| Phase | 1 |
| AIC Rating | 85kA @ 240VAC, 35kA @ 480VAC, 18kA @ 600Y/347VAC, 85kA @ 250VDC |
| Frame Type | 3VA51 |
|---|---|
| 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, Fixed Magnetic |
| Available Options | Shunt Trip, Auxiliary Switch, Undervoltage Release, Alarm Switch, Padlock Attachment, Motor Operator, Lugs |
|---|---|
| Accessories | Lugs Not Included |
| Standards | HACR, HID, IEC 60947-2, RoHS, UL 489 |
| Approval | ABS, CE, CSA, cULus, DNV, EAC, Lloyd's, UL, VDE |
| Temp Rating | -25C to 70C |
| Construction Features | HACR Rated, Reverse Feed, HID Rated |
Product FAQs
7 answersDoes the 3VA5145-5ED21-0AA0 come with line and load lugs?
No. This breaker ships from the factory without lugs. You must order the appropriate nut keeper plates or standard line and load lugs separately for field installation.
What legacy Siemens circuit breakers does this 3VA51 model replace?
The 3VA51 frame is the modern replacement for legacy Siemens ED frame breakers. Specifically, this 45A, 2-pole model replaces the discontinued ED62B045.
Is the 3VA5145-5ED21-0AA0 rated for reverse feed applications?
Yes. Siemens 3VA5 thermal-magnetic molded case circuit breakers are UL listed for reverse feed installations.
Can I adjust the thermal or magnetic trip settings on this breaker?
No. This unit is equipped with a TM210 trip unit, which features fixed thermal (long-time) and fixed magnetic (instantaneous) trip functions.
How is this breaker applied in 250VDC systems?
When using this 2-pole thermal-magnetic breaker on a 250VDC system, you must connect one pole to each leg of the DC supply circuit.
Which panelboards accept the 3VA5145-5ED21-0AA0 breaker?
This breaker mounts directly into Siemens 3VA panelboards and switchboards. It can also be installed into legacy Siemens P1 panelboards when using the correct retrofit mounting kit.
What is the maximum frame size for the 3VA5145-5ED21-0AA0?
This breaker is built on the Siemens 3VA51 frame, which has a maximum capacity of 125 amps.
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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