Free Shipping Over $99
Siemens 3VA5120-6EF31-0AA0 Molded Case Circuit Breaker
- 20A
- 3 Pole
- Panel Mount
Siemens
3VA5120-6EF31-0AA0
Molded Case Circuit Breaker
Brand
Siemens
SKU
3VA5120-6EF31-0AA0
Quantity
Shop with Confidence
Add an extra year of protection in your cart.
Siemens 3VA5120-6EF31-0AA0 - 20A 3 Pole Molded Case Circuit Breaker
New
Quantity
Similar Items
20A 3 Pole Molded Case Circuit Breaker
25A 3 Pole Molded Case Circuit Breaker
25A 3 Pole Molded Case Circuit Breaker
Description
Offering advanced flexibility for industrial systems, the Siemens 3VA5120-6EF31-0AA0 features a TM240 trip unit with adjustable thermal (14-20A) and magnetic settings. This 3-pole, 20A molded case circuit breaker delivers a powerful 65kAIC interrupting capacity at 480VAC. It integrates seamlessly into Siemens P1, P2, and P3 panelboards or motor control centers. Designed as a modern replacement, it upgrades older HED43B020 and HHED63B020 models while maintaining Class H breaking performance.Specifications
| Brand | Siemens |
|---|---|
| Part Number | 3VA5120-6EF31-0AA0 |
| Series | 3VA5 |
| Amperage | 20A |
| Poles | 3 |
| Mounting Style | Panel Mount |
| Voltage | 240VAC, 480Y/277VAC, 480VAC, 600Y/347VAC, 500VDC |
| Phase | 3 |
| AIC Rating | 100kA @ 240VAC, 65kA @ 480Y/277VAC, 65kA @ 480VAC, 25kA @ 600Y/347VAC, 100kA @ 500VDC |
| Amperage Range | 14-20A |
|---|
| Terminal Type | Lugs |
|---|---|
| For Use With | Siemens P1, P2, P3 Panelboards, Switchboards, Motor Control Centers |
| 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, Lugs, 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, Reverse Feed |
Product FAQs
6 answersWhich legacy Siemens breakers does the 3VA5120-6EF31-0AA0 replace?
This breaker serves as a modern replacement for discontinued HED43B020 and HHED63B020 models, maintaining Class H breaking performance.
Are terminal lugs included with this circuit breaker?
No. The -0AA0 catalog suffix indicates this breaker is supplied without lugs. You must source the appropriate lug kits separately based on your specific wire size requirements.
Which panelboards are compatible with this breaker?
It is designed for use with Siemens P1, P2, and P3 panelboards, as well as compatible Siemens switchboards and motor control centers.
What type of trip unit does the 3VA5120-6EF31-0AA0 use?
It is equipped with a TM240 thermal-magnetic trip unit that features both adjustable thermal (Ir) and adjustable instantaneous magnetic (Ii) settings for precise overcurrent protection.
What is the frame size for this breaker?
This unit is built on the Siemens 3VA51 frame, which has a maximum continuous current capacity of 125A.
Is this breaker suitable for DC applications?
Yes, it is rated for DC systems up to 500VDC, where it provides a 100kA interrupting capacity.
SuperClub
Join free. Get 500 SuperPoints.
Earn points on eligible purchases and redeem them at checkout.
100 SuperPoints = $1 off.
Warranties
Add an extra year of protection
60-Day Warranty
Your purchase includes 60 days of SuperBreakers warranty coverage.
Add a 1-year warranty extension in your cart.
Get a Quote
Don’t see what you’re looking for?
We source obsolete and hard-to-find parts every day.
Shipping
Free Shipping Policy
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.
Same Day Shipping
We strive to ship out your items the same day the order is placed. In rare circumstances SuperBreakers may reserve up to 5 business days to consolidate orders for complete shipment.
Expedited Shipments
Orders being shipped via Next Day Air, 2 Day Shipping or 3 Day Shipping must be received by 3 PM EST to guarantee same-day shipments. Expedited orders only ship on normal business days. Shipments will NOT be sent out on Saturdays and Sundays.
International Shipping
All International orders require a $1,000 minimum order threshold. Due to the special nature of these shipments, we require that these be placed with a SuperBreakers representative. Additional shipping and instructions will apply. All International Orders are Non-Cancel and Non-Refundable.
Reviews
Review summary
Customers rate this product 4.8 out of 5 based on 8 reviews.
Search
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