3VA5270-7EF31-0AA0 - CFAS 70 Amp Circuit Breaker
- 70 Amp
- 100kA @ 480V Volts AC
- 3 Pole
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3VA5270-7EF31-0AA0 - CFAS 70 Amp Circuit Breaker Description
3VA5270-7EF31-0AA0 - CFAS 70 Amp Circuit Breaker
If you’re working with higher fault levels and need something you can trust to trip exactly when it should, the Siemens 3VA5270-7EF31-0AA0 gets the job done without overcomplicating things. This 70-amp, 3-pole breaker from the 3VA5 line is built for solid, everyday protection in commercial and industrial setups where reliability isn’t optional. What stands out here is the 100kA interrupting rating at 480V—it gives you a comfortable margin in systems where fault current can spike hard. The thermal magnetic trip unit is straightforward and dependable: fixed overload protection at 70A and instantaneous protection set at 10x the rated current—no guesswork, no unnecessary adjustments—just consistent performance. It’s also sized right for practical installs. The 3VA5 frame keeps things compact enough to fit comfortably in most panel configurations without sacrificing capability.
Key Features and Benefits
- 100kA @ 480V interrupting capacity handles high fault conditions with confidence
- 70 amp rating suited for a wide range of commercial and industrial loads
- 3-pole design for three-phase system protection
- Thermal magnetic trip unit (TM240) for dependable, no-nonsense operation
- Fixed overload protection (Ir = 70A)—no drift, no surprises
- Instantaneous trip at 10x In for fast fault clearing
- Compact 3VA5 frame helps save space inside the panel.
- Built for long-term use in demanding environments
Technical Specifications
- Manufacturer: Siemens
- Series: 3VA52
- Part Number: 3VA5270-7EF31-0AA0
- Poles: 3
- Amperage: 70A
- Voltage Rating: 480V
- Interrupting Capacity: 100kA @ 480V
- Trip Type: Thermal Magnetic (TM240)
- Overload Protection (Ir): 70A (fixed)
- Short-Circuit Protection (Ii): 10 × In
- Frame Size: 250
- Dimensions: 9.65" H × 6.3" W × 5.9" D
Material Compliance and Certifications
- This breaker is manufactured to meet UL standards for molded case circuit breakers, making it suitable for use in regulated electrical systems across the U.S. It’s designed with safety and code compliance in mind so that you can install it with confidence in the right application.
Where It Works Best
- You’ll typically see this breaker used in distribution panels, industrial equipment, and commercial electrical systems where higher interrupting capacity is needed. It’s a good fit for motor protection and branch circuits that demand consistent, reliable tripping under load and fault conditions.
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Specifications
- Depth:5.9
- Height:9.65
- Width:6.3
- Poles:3
- Amperes:70
- 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 Frame 250 breaking capacity class C 100 kA @ 480 V 3-pole, line protection TM240, ATAM, In=70 A overload protection Ir=70 A permanently set short-circuit protection Ii=10 x In without connection
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