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Siemens 3VA5120-4ED21-0AA0 Molded Case Circuit Breaker
- 20A
- 2 Pole
- Panel Mount
Siemens
3VA5120-4ED21-0AA0
Molded Case Circuit Breaker
Brand
Siemens
SKU
3VA5120-4ED21-0AA0
Quantity
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Siemens 3VA5120-4ED21-0AA0 - 20A 2 Pole Molded Case Circuit Breaker
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Description
Built for demanding commercial and industrial environments, the Siemens 3VA5120-4ED21-0AA0 is a 2-pole, 20A MCCB. It is equipped with a TM210 thermal-magnetic trip unit to safeguard critical circuits against overloads. This panel-mount breaker installs into Siemens P2 through P5 panelboards and enclosures. With the appropriate kit, it replaces legacy ED62B020 breakers. Featuring a 25 kAIC interrupt rating at 480VAC, the unit is HACR rated and current limiting for HVAC applications.Specifications
| Brand | Siemens |
|---|---|
| Part Number | 3VA5120-4ED21-0AA0 |
| Series | 3VA5 |
| Amperage | 20A |
| Poles | 2 |
| Mounting Style | Panel Mount |
| Voltage | 240VAC, 480Y/277VAC, 480VAC, 600Y/347VAC, 250VDC |
| Phase | 1 |
| AIC Rating | 65kA @ 240VAC, 25kA @ 480Y/277VAC, 25kA @ 480VAC, 14kA @ 600Y/347VAC |
| Terminal Type | Lugs |
|---|---|
| For Use With | Siemens P2, P3, P4, P5 Panelboards, Switchboards, Enclosures |
| 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, Padlock Attachment, Motor Operator, Rotary Handle, DIN Rail Adapter |
|---|---|
| Accessories | None (Nut Keeper Plate) |
| Standards | HACR, IEC 60947-2, UL 489 |
| Approval | CE, CSA, EAC, UL, VDE |
| Temp Rating | -25C to 70C |
| Construction Features | HACR Rated, Reverse Feed |
Product FAQs
7 answersCan the 3VA5120-4ED21-0AA0 replace older Siemens ED frame breakers?
Yes, this 3VA51 frame breaker can replace legacy ED62B020 circuit breakers when installed with the appropriate retrofit mounting kit.
What type of trip unit is installed in the 3VA5120-4ED21-0AA0?
It features a TM210 thermal-magnetic trip unit with fixed long-time (thermal) and fixed instantaneous (magnetic) protection functions.
What is the instantaneous trip setting for the 3VA5120-4ED21-0AA0?
The magnetic instantaneous trip (Ii) is fixed at 300A, which is 15 times the 20A continuous current rating.
What is the maximum frame capacity for this Siemens 3VA5 breaker?
The 3VA5120-4ED21-0AA0 is built on the Siemens 3VA51 frame, which supports a maximum capacity of 125A.
Is the Siemens 3VA5120-4ED21-0AA0 rated for direct current (DC) applications?
Yes, this thermal-magnetic breaker is suitable for DC networks and carries a maximum voltage rating of 250V DC.
Can this Siemens 3VA5 breaker be reverse fed?
Yes, Siemens 3VA5 thermal-magnetic molded case circuit breakers are UL listed for reverse feed applications.
Is this 20A Siemens breaker HACR rated?
Yes, the 3VA5120-4ED21-0AA0 is HACR rated and current limiting, making it suitable for heating, air conditioning, and refrigeration 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