3VA5280-7EC31-0AA0 - CFAS 80 Amp Circuit Breaker

3VA5280-7EC31-0AA0 - CFAS 80 Amp Circuit Breaker

The Siemens 3VA5280-7EC31-0AA0 is one of those breakers you spec when you just need it to work—no surprises, no babysitting. It’s an 80-amp, 3-pole unit from the 3VA5 series, built for standard three-phase systems where protection has to be consistent. With a 100kA interrupting rating at 480V, it’s more than capable of handling higher fault levels without hesitation. This model uses a thermal magnetic trip unit, which a lot of contractors still prefer for its simplicity and reliability. The settings are fixed—80A for overload and 10x In for instantaneous trips—so once it’s in place, there’s nothing to tweak or drift out of spec over time. That’s often exactly what you want in a busy panel: install it, trust it, move on. It also fits into a fairly compact footprint for a frame 250 breaker, which helps when space inside the enclosure is tight.

Key Features and Benefits

• Rated at 100kA @ 480V for handling higher available fault current
• Thermal magnetic trip unit—simple, proven, and dependable
• Fixed 80A overload protection (no field adjustments needed)
• Instantaneous trip at 10x In for fast short-circuit response.
• 3-pole configuration for three-phase distribution
• Compact size for easier panel integration
• Built for steady, long-term use in demanding environments

Technical Specifications

• Part Number: 3VA5280-7EC31-0AA0
• Series: 3VA52 (3VA5 platform)
• Poles: 3
• Amperage: 80A
• Interrupting Rating: 100kA @ 480V
• Trip Unit: Thermal Magnetic (TM230)
• Overload (Ir): 80A (fixed)
• Instantaneous (Ii): 10 × In
• Frame Size: 250
• Dimensions: 9.65" H × 6.3" W × 5.9" D

Material Compliance and Certifications

• UL-listed molded case circuit breaker.
• Built to meet standard electrical safety requirements for commercial and industrial use
• Suitable where UL-compliant components are required

Where It Works Best

• You’ll typically see this breaker in commercial buildings, light industrial setups, and OEM panels. It’s a good fit for distribution sections, motor circuits, and general line protection, especially where available fault current is on the higher side if you’re putting together a system where you don’t want to deal with adjustable settings or callbacks, this type of breaker makes a lot of sense.