3VA5215-5EC31-0AA0 - MFAS 150 Amp Circuit Breaker

3VA5215-5EC31-0AA0 - MFAS 150 Amp Circuit Breaker

The Siemens 3VA5215-5EC31-0AA0 is one of those breakers that does exactly what you expect—no extra complexity, no surprises. It’s a 150-amp, 3-pole unit built on the 3VA5 frame, and it’s commonly used in commercial panels and light industrial setups where consistent protection matters. With a 35kA interrupting rating at 480V, it’s designed to handle higher fault levels without becoming a weak point in your system. This model uses a thermal magnetic trip unit, so you’re covered on both overloads and short circuits. One thing worth pointing out—everything is factory set. The overload protection is fixed at 150 amps, and the instantaneous trip is locked at 10x the rated current. That’s actually a plus for a lot of installs. It keeps things simple and avoids misadjustments in the field.

Key Features and Benefits

• 150 amp rating for standard commercial and industrial applications
• 35kA interrupting capacity at 480V
• Thermal magnetic trip unit (overload + short circuit protection)
• Fixed settings—no calibration or adjustment needed
• 3-pole breaker for three-phase systems
• 3VA52 frame (250 frame size)
• M-interrupting class design

Technical Specifications

• Part Number: 3VA5215-5EC31-0AA0
• Amperage: 150A
• Poles: 3
• Voltage: 480V
• Interrupting Rating: 35kA @ 480V
• Frame: 3VA52 (250 Frame)
• Trip Unit: TM230 Thermal Magnetic
• Overload (Ir): 150A (fixed)
• Instantaneous (Ii): 10x In (fixed)
• Size: 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 distribution equipment

Where It Works Best

• Commercial electrical panels
• Small to mid-size industrial equipment
• HVAC systems
• Motor protection circuits
• General three-phase distribution