Siemens 3VA5212-7EF31-0AA0 Molded Case Circuit Breaker
- 125A
- 3 Pole
- Panel Mount
Siemens
3VA5212-7EF31-0AA0
Molded Case Circuit Breaker
Brand
Siemens
SKU
3VA5212-7EF31-0AA0
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Siemens 3VA5212-7EF31-0AA0 - 125A 3 Pole Molded Case Circuit Breaker
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Description
Offering maximum flexibility, the Siemens 3VA5212-7EF31-0AA0 is a 3-pole, 125A molded case circuit breaker from the SENTRON 3VA5 series. It provides reliable current-limiting protection for demanding industrial environments. This unit mounts into Siemens P1, P2, and P3 panelboards (requires adapter) and switchboards. It also serves as a replacement for the legacy HFD63B125 breaker. The breaker features a TM240 trip unit with fully adjustable thermal and magnetic settings.Specifications
| Brand | Siemens |
|---|---|
| Part Number | 3VA5212-7EF31-0AA0 |
| Series | 3VA5 |
| Amperage | 125A |
| Poles | 3 |
| Mounting Style | Panel Mount |
| Voltage | 240VAC, 480Y/277VAC, 480VAC, 600Y/347VAC, 600VAC, 250VDC, 500VDC, 750VDC |
| Phase | 3 |
| AIC Rating | 200kA @ 240VAC, 100kA @ 480Y/277VAC, 100kA @ 480VAC, 35kA @ 600Y/347VAC, 35kA @ 600VAC, 100kA @ 250VDC, 100kA @ 500VDC, 100kA @ 750VDC |
| Amperage Range | 100-125A |
|---|
| Frame Type | 3VA52 |
|---|---|
| Terminal Type | Lugs |
| For Use With | Siemens P1, P2, P3 Panelboards (requires adapter), 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, Rotary Handle, Padlock Attachment, Lug Kits |
|---|---|
| Accessories | Nut Keeper Plate |
| Standards | IEC 60947-2, UL 489, HACR |
| Approval | ABS, CE, CSA, cULus, DNV, EAC, GL, Lloyd's, RCM, UL, VDE |
| Temp Rating | -25C to 70C |
| Construction Features | HACR Rated, Reverse Feed |
Product FAQs
6 answersWhat are the adjustable trip settings for the Siemens 3VA5212-7EF31-0AA0?
This breaker features a TM240 ATAM (Adjustable Thermal, Adjustable Magnetic) trip unit. The thermal overload protection is adjustable from 100A to 125A, and the magnetic short-circuit protection is adjustable from 625A to 1250A, which is 5 to 10 times the continuous current rating.
Can the 3VA5212-7EF31-0AA0 be used in DC electrical systems?
Yes, this thermal-magnetic breaker is rated for use in DC networks up to 750VDC. It provides an interrupting capacity of 100kAIC at 250VDC, 500VDC, and 750VDC.
Which Siemens panelboards are compatible with this 125A 3VA5 breaker?
It can be installed in Siemens P1, P2, and P3 panelboards, though a specific mounting adapter kit is required for the 3VA52 frame. It is also suitable for use in Siemens switchboards.
What does the 7 in the 3VA5212-7EF31-0AA0 catalog number indicate?
The 7 designates it as a Class C breaking capacity breaker. This specific class provides a high interrupting rating of 100kAIC at 480VAC and 35kAIC at 600VAC.
What is the frame size of the 3VA5212-7EF31-0AA0?
While it has a continuous current rating of 125A, it is built on the Siemens 3VA52 frame, which is a 250A maximum frame size.
Does this breaker provide ground fault protection?
No, the 3VA5212-7EF31-0AA0 features a standard thermal-magnetic trip unit with Long-Time and Instantaneous (LI) functions only. It does not include integrated ground fault equipment protection.
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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