3VA5215-7EF31-0AA0 - CFAS 150 Amp Circuit Breaker

3VA5215-7EF31-0AA0 - CFAS 150 Amp Circuit Breaker

When you’re working with a system that can see serious fault current, you don’t want to cut corners on protection. The Siemens 3VA5215-7EF31-0AA0 is one of those breakers you install and don’t have to worry about later. It’s a 150 amp, 3-pole unit built for commercial and industrial setups where things need to work the first time—and keep working. With a 100kA interrupting rating at 480V, it’s made to handle tough conditions without hesitation. If a fault hits, this breaker is designed to clear it quickly and help prevent bigger problems down the line. That alone makes it a practical choice for higher-demand systems. What a lot of people like about this model is how straightforward it is. The thermal magnetic trip unit does exactly what you expect—it covers overloads and short circuits without needing a bunch of adjustments. The overload protection is fixed at 150 amps, and the instantaneous trip is set at 10 times that. No fine-tuning, no guesswork. Install it, wire it, and move on to the next job. It’s part of the Siemens 3VA5 series, which has a solid reputation in the field. The size is manageable, so you’re not fighting for space in the panel, and it fits into most standard setups without creating extra work.

Key Features and Benefits

• Handles high fault conditions with a 100kA rating at 480V
• 150 amp capacity for a wide range of three-phase applications
• Thermal magnetic trip unit for simple, dependable protection
• Fixed settings (Ir = 150A, Ii = 10x In) keep things easy during install
• 3-pole design for standard commercial and industrial systems
• Compact size that doesn’t crowd your panel
• Part of the widely used Siemens 3VA52 frame series

Technical Specifications

• Part Number: 3VA5215-7EF31-0AA0
• Series: 3VA52
• Poles: 3
• Amperage: 150A
• Interrupting Capacity: 100kA @ 480V
• Trip Type: Thermal Magnetic (TM240)
• Overload Protection (Ir): 150A (fixed)
• Instantaneous Trip (Ii): 10 x In
• Dimensions:
  • Height: 9.65 in
  • Width: 6.3 in
  • Depth: 5.9 in

Material Compliance and Certifications

• Meets UL standards, so it’s suitable for use in compliant commercial and industrial electrical systems across the U.S. That helps simplify inspections and approvals.

Where It Works Best

• This breaker fits right into commercial buildings, plant floors, and distribution panels where reliability matters and downtime isn’t an option. It’s especially useful in setups with higher available fault current, where that 100kA rating actually makes a difference. If you’re replacing an existing unit or building out a panel, it’s an easy, dependable fit.