Siemens 3VA5280-7EF31-0AA0 Molded Case Circuit Breaker
- 80A
- 3 Pole
- Panel Mount
Siemens
3VA5280-7EF31-0AA0
Molded Case Circuit Breaker
Brand
Siemens
SKU
3VA5280-7EF31-0AA0
Quantity
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Siemens 3VA5280-7EF31-0AA0 - 80A 3 Pole Molded Case Circuit Breaker
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Description
Rated for high-fault environments, this 80A molded case circuit breaker provides advanced long-time and instantaneous (LI) protection. The unit features both adjustable thermal (56-80A) and adjustable magnetic trip settings for maximum coordination flexibility. Designed to mount into modern Siemens 3VA panelboards, it replaces legacy HFXD63B080 models when paired with the proper mounting kit. This C-Class interrupting breaker delivers 100kAIC at 480VAC and comes without lugs installed.Specifications
| Brand | Siemens |
|---|---|
| Series | 3VA5 |
| Amperage | 80A |
| Poles | 3 |
| Mounting Style | Panel Mount |
| Voltage | 240VAC, 480VAC, 600VAC, 750VDC |
| Phase | 3 |
| AIC Rating | 200kA @ 240VAC, 100kA @ 480VAC, 35kA @ 600VAC, 100kA @ 750VDC |
| Amperage Range | 56-80A |
|---|
| Frame Type | 3VA5 |
|---|---|
| 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 | Adjustable Thermal, Adjustable Magnetic |
| Available Options | Auxiliary Switch, Alarm Switch, Shunt Trip, Undervoltage Release, Motor Operator, Padlock Attachment |
|---|---|
| Accessories | Nut Keeper Kit |
| Standards | IEC 60947-2, UL 489 |
| Approval | CE, CSA, UL |
| Temp Rating | -25C to 70C |
| Construction Features | HACR Rated |
Product FAQs
8 answersWhat is the trip unit adjustability for the Siemens 3VA5280-7EF31-0AA0?
This breaker features a TM240 ATAM (Adjustable Thermal, Adjustable Magnetic) trip unit. The thermal overload protection (Ir) is adjustable from 64A to 80A, and the instantaneous short-circuit protection (Ii) is adjustable from 400A to 800A (5 to 10 times the continuous current).
What frame size does the 3VA5280-7EF31-0AA0 belong to?
It is part of the Siemens 3VA52 frame family, which has a maximum capacity of 250A. This allows it to fit in the same panelboard or switchboard spaces designed for other 3VA52 breakers.
Can the Siemens 3VA5280-7EF31-0AA0 be reverse fed?
Yes, all Siemens 3VA5 thermal-magnetic trip circuit breakers are UL listed for reverse feed applications.
How should the 3VA5280-7EF31-0AA0 be wired for high-voltage DC applications?
While rated for up to 750 VDC, applying this 3-pole breaker on 500V or higher ungrounded DC systems requires connecting the power supply in a zig-zag configuration through the breaker. This ensures the voltage between phases on the breaker terminals is uniformly distributed.
What does the "7" in the catalog number 3VA5280-7EF31-0AA0 indicate?
The "7" designates the breaking capacity class C for this frame, which provides an interrupting rating of 100 kA at 480 VAC.
What does the "EF" in the catalog number 3VA5280-7EF31-0AA0 signify?
The "EF" designates the TM240 ATAM trip unit, which provides adjustable thermal and adjustable magnetic protection.
Which Siemens enclosures are compatible with the 3VA5280-7EF31-0AA0?
This breaker is designed for use in Siemens 3VA panelboards and switchboards. It requires the appropriate mounting hardware or strap kits specific to the 3VA52 250A frame size.
What type of protection does the 3VA5280-7EF31-0AA0 provide?
It provides line protection against overloads and short circuits using a thermal-magnetic trip unit. It does not include integrated ground fault (GFCI) or arc fault (AFCI) protection.
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Reviews
Review summary
Customers rate this product 4.8 out of 5 based on 9 reviews.
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Rating
9 reviews
- MRMark R.Verified BuyerReviewingSiemens 3VA5290-5EC31-0AA0 - 90A 3 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars11/6/26Breaker from SuperBreakers
SuperBreakers had what I needed and got it to me very Fast.
- 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