Siemens 3VA5330-7EC31-0AA0 Molded Case Circuit Breaker
- 300A
- 3 Pole
- Panel Mount
Siemens
3VA5330-7EC31-0AA0
Molded Case Circuit Breaker
Brand
Siemens
SKU
3VA5330-7EC31-0AA0
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Siemens 3VA5330-7EC31-0AA0 - 300A 3 Pole Molded Case Circuit Breaker
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Description
The 3VA5330-7EC31-0AA0 is a 3-pole Siemens MCCB engineered for industrial line protection. Part of the 3VA5 Frame 400 family, it delivers a 300A rating and features a TM230 trip unit with fixed thermal and adjustable magnetic settings. This breaker mounts into Siemens P3 panelboards and switchboards, replacing legacy CJD63B300 units. Rated 100 kAIC at 480V, this Class C current-limiting breaker provides superior short-circuit protection. It is HACR rated and supplied without lugs.Specifications
| Brand | Siemens |
|---|---|
| Part Number | 3VA5330-7EC31-0AA0 |
| Series | 3VA5 |
| Amperage | 300A |
| Poles | 3 |
| Mounting Style | Panel Mount |
| Voltage | 240VAC, 480Y/277VAC, 480VAC, 600Y/347VAC, 600VAC, 500VDC |
| Phase | 3 |
| AIC Rating | 200kA @ 240VAC, 100kA @ 480Y/277VAC, 100kA @ 480VAC, 35kA @ 600Y/347VAC, 35kA @ 600VAC, 100kA @ 500VDC |
| Terminal Type | Lugs |
|---|---|
| For Use With | Siemens P3 Panelboards, Switchboards |
| Trip Technology | Thermal Magnetic |
|---|---|
| Trip Function Code | LI |
| Trip Function | Long-Time, Instantaneous |
| Trip Adjustability | Fixed Thermal, Adjustable Magnetic |
| Available Options | Shunt Trip, Auxiliary Switch, Undervoltage Release, Alarm Switch, Motor Operator, Rotary Handle, Handle Lock, Padlock Attachment, Busbar System, Lug Kits |
|---|---|
| Accessories | None (Lugs sold separately) |
| Standards | IEC 60947-2, UL 489, CSA C22.2 No. 5 |
| Approval | CE, CSA, UL, VDE |
| Temp Rating | -25C to 70C |
| Construction Features | HACR Rated, Reverse Feed |
Product FAQs
6 answersWhat panelboards are compatible with the 3VA5330-7EC31-0AA0?
This 3-pole breaker is engineered for installation in Siemens P3 panelboards and Siemens switchboards.
What does the Class C interrupting designation mean for this breaker?
The Class C (CJAS) designation indicates a high-tier breaking capacity, allowing the breaker to safely interrupt fault currents up to 100kA at 480VAC and 200kA at 240VAC.
How is the TM230 trip unit configured on this 300A breaker?
The TM230 trip unit features fixed thermal overload protection set at 300A and an adjustable magnetic short-circuit pickup that can be configured between 5 and 10 times the continuous current rating (1500A to 3000A).
Which legacy Siemens circuit breakers does the 3VA53 frame replace?
The Sentron 3VA53 frame is the direct modern replacement for discontinued Siemens JD and JXD 400-amp frame molded case circuit breakers.
Is the 3VA5330-7EC31-0AA0 rated for use in DC electrical systems?
Yes, this thermal-magnetic breaker is rated for direct current applications, providing a 100kA interrupting capacity at 500VDC.
What is the maximum frame size for the 3VA5330-7EC31-0AA0?
This breaker is built on the Siemens 3VA53 frame, which has a maximum physical capacity of 400 amps, though this specific model is factory-calibrated for a 300-amp continuous load.
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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