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Siemens 3VA5125-5EC31-0AA0 Molded Case Circuit Breaker
- 25A
- 3 Pole
- Panel Mount
Siemens
3VA5125-5EC31-0AA0
Molded Case Circuit Breaker
Brand
Siemens
SKU
3VA5125-5EC31-0AA0
Quantity
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Siemens 3VA5125-5EC31-0AA0 - 25A 3 Pole Molded Case Circuit Breaker
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Description
Built for high-fault commercial environments, the Siemens 3VA5125-5EC31-0AA0 provides 25A of continuous current handling. This 3-pole breaker fits Siemens P1, P2, and P3 panelboards as well as switchboards. When paired with the appropriate mounting kit, it effectively replaces the discontinued ED63B025. The TM230 thermal-magnetic trip unit boasts a 35kA interrupting capacity at 480VAC. It includes fixed thermal and adjustable magnetic trip functions for precise coordination.Specifications
| Brand | Siemens |
|---|---|
| Part Number | 3VA5125-5EC31-0AA0 |
| Series | 3VA5 |
| Amperage | 25A |
| Poles | 3 |
| Mounting Style | Panel Mount |
| Voltage | 240VAC, 480VAC, 600Y/347VAC, 500VDC |
| Phase | 3 |
| AIC Rating | 85kA @ 240VAC, 35kA @ 480VAC, 18kA @ 600Y/347VAC, 85kA @ 500VDC |
| Frame Type | 3VA5 |
|---|---|
| Terminal Type | Lugs |
| For Use With | Siemens P1, P2, P3 Panelboards, 3VA Panelboards, Switchboards |
| Trip Technology | Thermal Magnetic |
|---|---|
| Trip Function Code | LI |
| Trip Function | Long-Time, Instantaneous |
| Trip Adjustability | Fixed Thermal, Adjustable Magnetic |
| Available Options | Auxiliary Switch, Alarm Switch, Shunt Trip, Undervoltage Release, Motor Operator, Rotary Handle, Lug Kits, Busbar System |
|---|---|
| Accessories | Nut Keeper |
| Standards | IEC 60947-2, UL 489, HACR |
| Approval | ABS, CE, CSA, EAC, IEC, UL, VDE |
| Temp Rating | -25C to 70C |
| Construction Features | HACR Rated, Reverse Feed |
Product FAQs
8 answersWhat legacy Siemens breakers does the 3VA5125-5EC31-0AA0 replace?
When paired with the appropriate mounting kit, it serves as a modernized replacement for discontinued Siemens ED43B025 and ED63B025 circuit breakers.
What type of trip unit is installed in this breaker?
It features a TM230 thermal-magnetic trip unit with fixed thermal (Long-Time) and adjustable magnetic (Instantaneous) settings for precise coordination.
What is the adjustable range for the magnetic short-circuit protection?
The instantaneous magnetic trip (Ii) on the TM230 trip unit is adjustable from 6 to 12 times the 25A continuous current rating, allowing a trip range of 150A to 300A.
What breaking capacity class does this breaker fall under?
The 3VA5125-5EC31-0AA0 is classified as a Medium (Class M) breaking capacity breaker within the Siemens 3VA51 frame group.
Can I install this breaker in a legacy Siemens P1 panelboard?
Yes, the 3VA5125-5EC31-0AA0 is compatible with Siemens P1, P2, P3, and 3VA panelboards, as well as switchboards. Note that installing a 3VA breaker in legacy panels may require a specific retrofit mounting kit.
Is the 3VA5125-5EC31-0AA0 suitable for HVAC applications?
Yes, this breaker is HACR rated, making it suitable for use with heating, air conditioning, and refrigeration equipment.
Can this circuit breaker be reverse fed?
Yes, because it features a non-interchangeable trip unit, the 3VA5125-5EC31-0AA0 meets UL 489 requirements for reverse feeding applications.
What is the ambient operating temperature range for this breaker?
The 3VA5125-5EC31-0AA0 has an ambient operating temperature rating of -25C to 70C.
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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