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Siemens 3VA5125-5ED21-0AA0 Molded Case Circuit Breaker
- 25A
- 2 Pole
- Panel Mount
Siemens
3VA5125-5ED21-0AA0
Molded Case Circuit Breaker
Brand
Siemens
SKU
3VA5125-5ED21-0AA0
Quantity
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Siemens 3VA5125-5ED21-0AA0 - 25A 2 Pole Molded Case Circuit Breaker
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Description
Offering reliable 25A protection, the Siemens 3VA5125-5ED21-0AA0 is a 2-pole MCCB designed for heavy-duty commercial and marine applications. This unit mounts into Siemens P2, P3, P4, and P5 panelboards. Facility managers can also use it to upgrade older systems, as it replaces the HED42B025 with the addition of a mounting kit. Featuring a robust 35kAIC rating at 480VAC, it ensures superior fault clearing. The HACR-rated design includes fixed long-time and instantaneous trip functions.Specifications
| Brand | Siemens |
|---|---|
| Part Number | 3VA5125-5ED21-0AA0 |
| Series | 3VA5 |
| Amperage | 25A |
| 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 |
| Terminal Type | Lugs |
|---|---|
| For Use With | Siemens P2, P3, P4, P5 Panelboards, Switchboards, Enclosures |
| Trip Technology | Thermal Magnetic |
|---|---|
| Trip Function Code | LI |
| Trip Function | Long-Time, Instantaneous |
| Trip Adjustability | Fixed Thermal, Fixed Magnetic |
| Available Options | Auxiliary Switch, Alarm Switch, Shunt Trip, Undervoltage Release, Padlock Attachment, Motor Operator, Rotary Handle, DIN Rail Adapter |
|---|---|
| Accessories | None (Nut Keeper Plate) |
| Standards | IEC 60947-2, UL 489, HACR |
| Approval | ABS, CE, CSA, DNV, EAC, IEC, UL, VDE |
| Temp Rating | -25C to 70C |
| Construction Features | HACR Rated, Reverse Feed |
Product FAQs
6 answersWhich panelboards are compatible with the 3VA5125-5ED21-0AA0?
This 2-pole breaker is designed to mount in Siemens P2, P3, P4, and P5 panelboards, as well as compatible Siemens switchboards and enclosures.
Can the 3VA5125-5ED21-0AA0 be used in DC power systems?
Yes, this breaker is rated for DC applications, providing an 85kA interrupting capacity at 250VDC.
Is the 3VA5125-5ED21-0AA0 approved for reverse-feed installation?
Yes, all Siemens 3VA5 thermal-magnetic circuit breakers are UL listed for reverse-feed applications, allowing for flexible installation orientations.
What legacy Siemens breakers does the 3VA5125-5ED21-0AA0 replace?
This 3VA5 breaker serves as a modern replacement for legacy 2-pole, 25A ED-frame breakers, such as the ED42B025 and ED62B025, when used with the appropriate mounting hardware.
Is this breaker suitable for HVAC applications?
Yes, the Siemens 3VA5125-5ED21-0AA0 is HACR rated, meaning it is certified for safe use in heating, air conditioning, and refrigeration equipment circuits.
Are the trip settings on the 3VA5125-5ED21-0AA0 adjustable?
No, this breaker features a TM210 fixed thermal and fixed magnetic (FTFM) trip unit. The overload and short-circuit trip functions are permanently set, with the instantaneous trip fixed at 12 times the rated current (300A).
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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