3VA5340-6EF31-0AA0 - 400A Class HJAS 3-Pole Circuit Breaker
- 400 Amp
- 3 Pole
Purchase Options: New
3VA5340-6EF31-0AA0 - 400A Class HJAS 3-Pole Circuit Breaker Description
3VA5340-6EF31-0AA0 - 400A Class HJAS 3-Pole Circuit Breaker
When you’re dealing with serious electrical loads, you don’t want to second-guess your protection. The Siemens 3VA5340-6EF31-0AA0 is built for exactly that kind of job. It’s a 400 amp, 3-pole circuit breaker designed to handle the demands of commercial and industrial systems without overcomplicating things. This model sits in Siemens’ 3VA5 line, which a lot of contractors and facility teams stick with for one reason—it works, and it keeps working. With a 65kA interrupting rating at 480V, it’s ready to clear high fault currents quickly before they turn into bigger (and more expensive) problems. One thing people like about this breaker is the adjustability. You’re not locked into a single setting. The thermal magnetic trip unit (TM240) lets you dial in overload protection anywhere from 320A up to 400A, and set instantaneous trips between 5x and 10x. That gives you a bit more control when you’re trying to coordinate protection across a system. It’s a solid choice whether you’re replacing an existing unit or putting together a new panel. No fluff—just a breaker that does what it’s supposed to do.
Key Features and Benefits
- Rated 400 Amps: for mid-to-heavy electrical loads
- 65kA @ 480V interrupting capacity: for high fault protection
- 3-pole design: for three-phase systems
- Thermal magnetic trip unit (TM240): for dependable operation
- Adjustable overload range: 320A – 400A
- Instantaneous trip setting: 5x – 10x
- Part of the trusted Siemens 3VA5 series
- Compact size: makes panel installation easier
- Lugs not included
Technical Specifications
- Manufacturer: Siemens
- Part Number: 3VA5340-6EF31-0AA0
- Series: 3VA53
- Amperage: 400A
- Poles: 3
- Interrupt Rating: 65 kA @ 480V AC
- Trip Unit: TM240 (Thermal Magnetic)
- Overload Setting (Ir): 320A – 400A
- Instantaneous Setting (Ii): 5x – 10x
-
Dimensions:
- Height: 9.8 in
- Width: 6.3 in
- Depth: 5.9 in
Material Compliance and Certifications
- UL Listed: for use in U.S. electrical systems
- Built to Siemens manufacturing standards: for consistency and safety
- Suitable for installations requiring NEC compliance
Where It Works Best
- You’ll typically see this breaker used in:
- Commercial buildings and office spaces
- Industrial facilities and production floors
- Main and sub distribution panels
- Equipment protection where higher fault current is present
- Retrofit projects where reliability matters
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Specifications
- Depth:5.9
- Height:9.8
- Width:6.3
- Poles:3
- Amperes:400
- Type:3VA53
- Approx Dimensions:9.80"H x 5.4"W x 5.4"D
- Additional Notes:H-Interrupting Class (HJAS) Thermal Magnetic circuit breaker 3VA5 UL 400A Frame Size, 3-Pole, class H 65 kA @ 480 V.AC, line protection TM240, ATAM, In=400 A overload protection Ir=320A-400A short-circuit protection Ii=5-10 x. Lugs NOT included
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