Siemens 3VA5280-5EF31-0AA0 Molded Case Circuit Breaker
- 80A
- 3 Pole
- Panel Mount
Siemens
3VA5280-5EF31-0AA0
Molded Case Circuit Breaker
Brand
Siemens
SKU
3VA5280-5EF31-0AA0
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Siemens 3VA5280-5EF31-0AA0 - 80A 3 Pole Molded Case Circuit Breaker
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80A 3 Pole Molded Case Circuit Breaker
80A 3 Pole Molded Case Circuit Breaker
80A 3 Pole Molded Case Circuit Breaker
Description
Built for demanding industrial environments, the Siemens 3VA5280-5EF31-0AA0 provides robust line protection within a 250A frame size. This 80-amp circuit breaker is ideal for commercial power distribution. It mounts into standard Siemens panelboards and switchboards, offering a seamless upgrade path for older FXD63B080 units. The defining feature of this MCCB is its TM240 trip unit, which allows users to fine-tune both thermal and magnetic settings for customized coordination.Specifications
| Brand | Siemens |
|---|---|
| Series | 3VA5 |
| Amperage | 80A |
| Poles | 3 |
| Mounting Style | Panel Mount |
| Voltage | 240VAC, 480Y/277VAC, 480VAC, 600Y/347VAC, 600VAC |
| Phase | 3 |
| AIC Rating | 85kA @ 240VAC, 35kA @ 480Y/277VAC, 35kA @ 480VAC, 18kA @ 600Y/347VAC, 18kA @ 600VAC |
| Amperage Range | 56-80A |
|---|
| Frame Type | 3VA52 |
|---|---|
| Terminal Type | Lugs |
| For Use With | Siemens Panelboards, 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, DIN Rail Adapter |
|---|---|
| Accessories | None (Nut Keeper) |
| 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 | Class M Breaking Capacity, HACR Rated, Current Limiting, Non-Interchangeable Trip, Trip-Free Mechanism, Quick-Make/Quick-Break |
Product FAQs
8 answersWhat is the trip unit adjustability for the 3VA5280-5EF31-0AA0?
This breaker features a TM240 ATAM (Adjustable Thermal, Adjustable Magnetic) trip unit. The thermal overload (Ir) is adjustable from 63A to 80A, and the instantaneous short-circuit protection (Ii) is adjustable from 5 to 10 times the continuous current, which equals 400A to 800A.
Can the Siemens 3VA5280-5EF31-0AA0 be reverse fed?
Yes, all Siemens 3VA5 thermal magnetic molded case circuit breakers are UL listed for reverse feed applications.
Is the 3VA5280-5EF31-0AA0 suitable for DC voltage applications?
Yes, this 3-pole breaker can be applied on DC systems. It is rated up to 250Vdc using a single pole, 500Vdc with two poles wired in series, and 750Vdc with three poles wired in series.
What is the frame size of the 3VA5280-5EF31-0AA0?
This breaker belongs to the Siemens 3VA52 frame size, which has a maximum physical capacity of 250A, though this specific unit is factory set with an 80A maximum continuous current rating.
Is the 3VA5280-5EF31-0AA0 a 100 percent rated circuit breaker?
No, this is a standard 80 percent rated circuit breaker. For applications requiring a 100 percent continuous current rating, you will need the alternate catalog number 3VA5280-5EF31-2AA0.
What is the part number for the 65kAIC at 480V version of this 80A breaker?
For higher interrupting capacity (Class H, 65kA at 480V), the correct Siemens catalog number is 3VA5280-6EF31-0AA0.
How many internal accessories can be installed in the 3VA5280-5EF31-0AA0?
This 3-pole 3VA52 breaker features two internal accessory pockets. These pockets can accommodate field installable auxiliary switches, alarm switches, shunt trips, or undervoltage releases.
Can this circuit breaker be mounted on a DIN rail?
Yes, the 3VA5280-5EF31-0AA0 can be DIN rail mounted using an optional Siemens DIN rail adapter. It can also be panel mounted using standard hardware.
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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