Siemens 3VA5270-7EC31-0AA0 Molded Case Circuit Breaker
- 70A
- 3 Pole
- Unit Mount
Quantity
Siemens 3VA5270-7EC31-0AA0 - 70A 3 Pole Molded Case Circuit Breaker
New
Quantity
Description
Built for circuit protection, the Siemens 3VA5270-7EC31-0AA0 is a molded case circuit breaker rated for 70A with 3 poles. It belongs to the 3VA5 series and has an LI trip function. Its LI trip function combines long-time protection and instantaneous protection. Long-time protection responds to overloads in a circuit. Instantaneous protection responds to short circuits in a circuit.Specifications
| Brand | Siemens |
|---|---|
| Part Number | 3VA5270-7EC31-0AA0 |
| Series | 3VA5 |
| Amperage | 70A |
| Poles | 3 |
| Mounting Style | Unit Mount |
| Voltage | 240VAC, 600VAC |
| Phase | 3 |
| AIC Rating | 200kA @ 240VAC, 35kA @ 600VAC |
| Frame Type | 3VA52 |
|---|---|
| Terminal Type | Lugs |
| For Use With | Siemens Panelboards and Switchboards |
| Trip Technology | Thermal Magnetic |
|---|---|
| Trip Function Code | LI |
| Trip Function | Long-Time, Instantaneous |
| Trip Adjustability | Fixed Thermal, Adjustable Magnetic |
| Available Options | Alarm Switch, Auxiliary Switch, Motor Operator, Shunt Trip, Undervoltage Release |
|---|---|
| Standards | IEC 60947-2, UL 489 |
| Approval | CE, CSA, UL, VDE |
| Temp Rating | -25C to 70C |
| Construction Features | HACR Rated |
Product FAQs
8 answersWhat does the 70A rating mean when selecting the Siemens 3VA5270-7EC31-0AA0?
The rated current is 70A. Use this rating when coordinating the breaker with the calculated circuit load and conductor ampacity.
How do the three poles relate to a three-phase circuit?
This is a three-pole breaker for three-phase service. The poles provide a breaker path for each phase conductor, so select it for a circuit requiring protection across three phases.
What protection does the thermal-magnetic LI trip provide?
LI combines long-time overload protection with instantaneous short-circuit protection. The thermal element responds to sustained overloads, while the magnetic element responds rapidly to high fault current.
Which trip settings can I adjust?
The thermal trip is fixed, and the magnetic trip is adjustable. Use the magnetic adjustment to coordinate instantaneous operation with expected inrush and fault conditions; the thermal overload setting remains fixed.
What does unit mounting mean for installation planning?
Unit mount means the breaker is mounted as an individual device. Plan its mounting location and conductor routing around that installation arrangement.
Which dimensions should I use when planning the installation layout?
The breaker is 4.84 in high and 6.89 in deep. Use these body dimensions when planning the mounting layout, with additional space for conductor routing and installation access.
How do UL, RoHS, REACh and WEEE matter when selecting this breaker?
UL approval is relevant when a project requires UL-approved equipment. RoHS addresses hazardous-substance restrictions, REACh addresses chemical requirements, and WEEE addresses electrical-equipment waste management. Use these to evaluate project compliance and end-of-life handling requirements.
How should I apply the voltage and interrupting ratings?
The breaker is rated 600VAC. For a 480V installation, verify that the available fault current does not exceed the breaker's interrupting rating and that the system voltage is within the breaker's voltage rating.
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Reviews
Review summary
Customers rate this product 4.8 out of 5 based on 9 reviews.
- MRMark R.Verified BuyerReviewingSiemens 3VA5290-5EC31-0AA0 - 90A 3 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars11/6/26Breaker from SuperBreakers
SuperBreakers had what I needed and got it to me very Fast.
- 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