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Siemens 3VA5120-5ED31-0AA0 Molded Case Circuit Breaker
- 20A
- 3 Pole
- Panel Mount
Siemens
3VA5120-5ED31-0AA0
Molded Case Circuit Breaker
Brand
Siemens
SKU
3VA5120-5ED31-0AA0
Quantity
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Siemens 3VA5120-5ED31-0AA0 - 20A 3 Pole Molded Case Circuit Breaker
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20A 3 Pole Molded Case Circuit Breaker
20A 3 Pole Molded Case Circuit Breaker
20A 3 Pole Molded Case Circuit Breaker
Description
Designed for 3-phase commercial and industrial systems, the Siemens 3VA5120-5ED31-0AA0 is a 3-pole molded case circuit breaker from the 3VA5 frame series. It ensures robust line protection with a fixed thermal and magnetic TM210 trip unit. This panel mount MCCB integrates into Siemens 3VA panelboards, switchboards, and motor control centers. It also functions as a replacement for discontinued ED63B020 breakers. It features a 35kAIC rating at 480V and reverse feed capability.Specifications
| Brand | Siemens |
|---|---|
| Part Number | 3VA5120-5ED31-0AA0 |
| Series | 3VA5 |
| Amperage | 20A |
| Poles | 3 |
| Mounting Style | Panel Mount |
| Voltage | 240VAC, 480Y/277VAC, 480VAC, 600Y/347VAC, 500VDC |
| Phase | 3 |
| AIC Rating | 85kA @ 240VAC, 35kA @ 480Y/277VAC, 35kA @ 480VAC, 18kA @ 600Y/347VAC, 50kA @ 500VDC |
| Terminal Type | Lugs |
|---|---|
| For Use With | Siemens 3VA Panelboards, Switchboards, Motor Control Centers |
| 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, Motor Operator, Lugs, Nut Keeper Kit, Padlock Attachment |
|---|---|
| Accessories | Nut Keeper |
| Standards | IEC 60947-2, UL 489, CSA C22.2 No. 5 |
| Approval | ABS, CE, CSA, DNV, EAC, Lloyd's, UL, VDE |
| Temp Rating | -25C to 70C |
| Construction Features | HACR Rated, Current Limiting, Reverse Feed |
Product FAQs
7 answersCan I use the 3VA5120-5ED31-0AA0 to replace an older Siemens ED-frame breaker?
Yes, this 3VA5 series breaker is the direct modern replacement for the discontinued Siemens ED63B020. It provides the same 20A, 3-pole configuration but uses the updated 3VA51 125A frame.
Is the Siemens 3VA5120-5ED31-0AA0 suitable for reverse feed applications?
Yes, all Siemens 3VA5 thermal-magnetic circuit breakers are UL listed for reverse feed applications, allowing you to wire the line and load connections in either direction.
Is this 20A Siemens 3VA5 breaker HACR rated?
Yes, the 3VA5120-5ED31-0AA0 is HACR rated, making it suitable for use with heating, air conditioning, and refrigeration equipment.
What frame size is the 3VA5120-5ED31-0AA0?
This breaker is built on the Siemens 3VA51 frame, which has a maximum physical capacity of 125A.
Are the trip settings adjustable on the 3VA5120-5ED31-0AA0?
No, this breaker features a TM210 thermal-magnetic trip unit with fixed settings. The long-time overload protection is permanently set to 20A, and the instantaneous short-circuit protection is fixed at 300A.
Is the 3VA5120-5ED31-0AA0 a 100 percent rated circuit breaker?
No, this is a standard 80 percent rated breaker. Continuous loads should not exceed 16A (80 percent of its 20A nominal rating) in accordance with standard National Electrical Code (NEC) practices.
What does the Class M breaking capacity signify for this breaker?
Class M indicates a medium interrupting capacity. For the 3VA5120-5ED31-0AA0, this provides a 35kA short-circuit rating at 480V and an 85kA rating at 240V.
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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