3VA5240-7ED31-0AA0 - CFAS 40 Amp Circuit Breaker
- 40 Amp
- 100kA @ 480V Volts AC
- 3 Pole
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3VA5240-7ED31-0AA0 - CFAS 40 Amp Circuit Breaker Description
3VA5240-7ED31-0AA0 - CFAS 40 Amp Circuit Breaker
The Siemens 3VA5240-7ED31-0AA0 is one of those breakers you use when you just need it to work—no guesswork, no constant adjustments. It’s a 40-amp, 3-pole unit built on the 3VA5 platform, designed for solid, everyday protection in commercial and industrial systems. What stands out here is the 100kA interrupting rating at 480V. That gives you a comfortable margin in higher fault environments, which is exactly where cheaper breakers tend to fall short. This one doesn’t. It handles overloads with a fixed 40A setting and trips instantly at 10 times the current when a short circuit hits. Simple, predictable, and effective. It’s not trying to be overly complicated—and that’s a good thing. You install it, wire it up, and it does its job in the background.
Key Features and Benefits
- 40 Amp rating with fixed overload protection—no adjustments needed
- 100kA interrupting capacity at 480V for higher fault applications
- Thermal magnetic trip for straightforward, reliable protection
- Instantaneous trip at 10x In to quickly clear short circuits
- 3-pole configuration for standard three-phase systems
- Built on the 3VA52 frame (250A frame size)
- C-Interrupting Class (CFAS) for demanding electrical setups
Technical Specifications
- Part Number: 3VA5240-7ED31-0AA0
- Manufacturer: Siemens
- Poles: 3
- Amperage: 40A
- Voltage: 480V
- Interrupting Rating: 100kA @ 480V
- Trip Unit: TM210 (Thermal Magnetic)
- Overload Protection (Ir): 40A (fixed)
- Short-Circuit Protection (Ii): 10 × In (fixed)
- Frame Type: 3VA52 (250A frame)
- Dimensions: 9.65" H × 6.3" W × 5.9" D
Material Compliance and Certifications
- UL Listed
- Meets standard U.S. electrical safety requirements
- Suitable for use in compliant commercial and industrial installations
Where It Works Best
- Commercial buildings and distribution panels
- Industrial equipment and machinery circuits
- OEM panel builds
- Retrofit jobs where a higher interrupting capacity is needed
- 480V three-phase systems
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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:40
- A.I.C. Rating & Volts:100kA @ 480V
- Type:3VA52
- Approx Dimensions:7.30"H x 4.10"W x 3.30"D
- Additional Notes:C-Interrupting Class (CFAS) Thermal Magnetic circuit breaker 3VA5 UL 250A Frame Size, class C 100 kA @ 480 V 3-pole, line protection TM210, FTFM, In=40 A overload protection Ir=40 A permanently set short-circuit protection Ii=10 x In without connection
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