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Siemens 3VA5145-4ED21-0AA0 Molded Case Circuit Breaker
- 45A
- 2 Pole
- Panel Mount
Siemens
3VA5145-4ED21-0AA0
Molded Case Circuit Breaker
Brand
Siemens
SKU
3VA5145-4ED21-0AA0
Quantity
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Siemens 3VA5145-4ED21-0AA0 - 45A 2 Pole Molded Case Circuit Breaker
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Description
Delivering reliable power distribution, the Siemens 3VA5145-4ED21-0AA0 is a 2-pole, 45A molded case circuit breaker built on the compact 125A 3VA51 frame. This unit mounts into Siemens 3VA panelboards and switchboards. It is the designated replacement for discontinued ED42B045 breakers. The breaker features a TM210 trip unit for fixed LI protection. It provides a 25 kAIC interrupting rating at 480V and is HACR rated for HVAC use.Specifications
| Brand | Siemens |
|---|---|
| Series | 3VA5 |
| Amperage | 45A |
| Poles | 2 |
| Mounting Style | Panel Mount |
| Voltage | 240VAC, 480VAC, 600Y/347VAC, 250VDC |
| Phase | 1 |
| AIC Rating | 65kA @ 240VAC, 25kA @ 480VAC, 14kA @ 600Y/347VAC, 50kA @ 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 | IEC 60947-2, UL 489, CSA C22.2 No. 5 |
| Approval | ABS, CE, CSA, EAC, IEC, UL, VDE |
| Temp Rating | -25C to 70C |
| Construction Features | HACR Rated, Reverse Feed, HID Rated |
Product FAQs
5 answersWhich panelboards are compatible with the Siemens 3VA5145-4ED21-0AA0 circuit breaker?
This 2-pole breaker is designed for installation in Siemens 3VA panelboards and compatible switchboards.
Can I use the 3VA5145-4ED21-0AA0 to replace an older Siemens ED42B045 breaker?
Yes, the 3VA5145-4ED21-0AA0 is the designated replacement for the discontinued ED42B045. Note that installing this newer 3VA51 frame breaker into older panels may require an additional mounting kit.
Is the 3VA5145-4ED21-0AA0 breaker HACR rated?
Yes, this circuit breaker is HACR rated, making it suitable for use with heating, air conditioning, and refrigeration equipment.
What type of trip unit is included with this 45A breaker?
It features a TM210 thermal magnetic trip unit, which provides fixed long-time overload and fixed instantaneous short-circuit protection.
What is the frame size of the 3VA5145-4ED21-0AA0?
This breaker is built on the compact Siemens 3VA51 frame, which has a maximum capacity of 125 amps.
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Parcel shipments with item value over $99 qualify for free economy shipping within the continental US. Please call to confirm special handling instructions. We do not charge a handling fee or require a minimum amount on any order. SuperBreakers does not ship on customer accounts.
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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