3VA5290-5EC31-0AA0 - MFAS 90 Amp Circuit Breaker
- 90 Amp
- 35kA @ 480V Volts AC
- 3 Pole
Purchase Options:
3VA5290-5EC31-0AA0 - MFAS 90 Amp Circuit Breaker Description
3VA5290-5EC31-0AA0 - MFAS 90 Amp Circuit Breaker
The Siemens 3VA5290-5EC31-0AA0 is one of those breakers you install and don’t have to think about again—and that’s exactly the point. It’s a 90-amp, 3-pole unit built on Siemens’ 3VA5 platform, designed for everyday use in commercial and industrial systems where failure isn’t an option. With a 35kA interrupting rating at 480V, it’s ready for higher fault conditions without hesitation. Inside, you’ve got a thermal-magnetic trip unit, so it handles overloads and short circuits the way it should—nothing fancy, just dependable protection that reacts when it needs to. The settings are fixed, which most guys actually prefer. No adjustments, no second-guessing—install it, wire it, move on. Physically, it’s compact enough to fit comfortably in most panel setups, but still built with the kind of weight and feel you expect from Siemens. This is the kind of breaker contractors, maintenance teams, and panel builders keep coming back to because it just does its job.
Key Features and Benefits
- 90 amp rating: for standard commercial and industrial loads
- 3-pole configuration: for three-phase systems
- 35kA interrupting capacity at 480V: handles higher fault levels
- Thermal-magnetic trip unit: for straightforward, reliable protection
- Fixed trip settings: no setup or calibration needed
- Part of the Siemens 3VA5 series (250 frame):
- Built for consistent performance over time
Technical Specifications
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Manufacturer: Siemens
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Part Number: 3VA5290-5EC31-0AA0
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Series: 3VA5
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Frame Size: 250
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Poles: 3
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Amperage: 90A
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Interrupting Rating: 35kA @ 480V
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Trip Type: Thermal Magnetic (TM230)
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Overload Protection (Ir): 90A (fixed)
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Instantaneous Trip (Ii): 10x rated current
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Dimensions: 9.65" H × 6.3" W × 5.9" D
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Interrupting Class: M (MFAS)
Material Compliance and Certifications
- Meets UL standards for molded case circuit breakers
- Designed for use in North American electrical systems
- Manufactured with durable internal components for long service life
- Suitable for installations requiring UL-listed protection equipment
Where It Works Best
- This breaker makes sense anywhere you need dependable, no-nonsense protection:
- Commercial buildings and facility panels
- Industrial equipment and machinery circuits
- OEM panel builds
- Replacement or upgrade jobs
- General three-phase power distribution
Use of Original Equipment Manufacturer (OEM) trademarks, names, and logos is for informational and identification purposes only. This does not imply any affiliation, sponsorship, endorsement, or approval by the original equipment manufacturer. CIRCUIT BREAKER SUPERSTORE® is an independent reseller and is not an authorized distributor, affiliate, or representative of any manufacturer. Manufacturer warranties do not apply unless expressly stated. All trademarks and registered trademarks are the property of their respective owners.
Siemens®, I-T-E®, and Murray® are registered trademarks of Siemens AG. Products sold are surplus, used, or refurbished and are NOT supplied by Siemens AG or its affiliates.
Specifications
- Depth:5.9
- Height:9.65
- Width:6.3
- Poles:3
- Amperes:90
- A.I.C. Rating & Volts:35kA @ 480V
- Type:3VA52
- Approx Dimensions:7.30"H x 4.10"W x 3.30"D
- Additional Notes:M-Interrupting Class (MFAS) Thermal Magnetic circuit breaker 3VA5 UL Frame 250 breaking capacity class M 35 kA @ 480 V 3-pole, line protection TM230, FTAM, In=90 A overload protection Ir=90 A permanently set short-circuit protection Ii=10 x In without connection
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