MP280 - 80 Amp Circuit Breaker

MP280 - 80 Amp Circuit Breaker

Give your home’s electrical system the dependable protection it deserves with the Siemens MP280 circuit breaker. Built to deliver reliable overload and short‑circuit defense, this 2-pole, 80 Amp breaker is a wise choice for residential meter stacks and HVAC circuits alike. Its compact size makes installation in tight meter‑stack spaces a breeze, while its high interrupt capacity gives you extra peace of mind. Whether you’re upgrading an existing panel or wiring a new installation, the MP280 offers solid performance without the complexity — giving you straightforward circuit protection that you can count on day after day.

Key Features and Benefits

• Versatile Compatibility: Works smoothly with 125 Amp and 225 Amp single-phase meter stacks (WMM, WML, WMT), making it an excellent choice for a wide range of residential electrical setups.
• HACR Rated: Fully compatible with heating, air-conditioning, and refrigeration (HVAC/R) equipment, so you can safely use it for HVAC circuits without worry.
• Dependable Circuit Protection: Engineered to shield your electrical system against overloads and short circuits, helping to prevent damage and avoid potential hazards.
• Compact, Easy Installation: Designed with a space-saving form factor that simplifies mounting and maintenance, even in tight meter-stack enclosures.
• High Interrupting Capacity: Features a 10 kA interrupt rating to handle fault conditions safely and effectively, offering an added layer of electrical system protection.

Technical Specifications

• Breaker Type: MP‑T miniature thermal-magnetic breaker
  
• Poles: 2 (double pole)
  
• Rated Amperage: 80 Amp
  
• Voltage: 120/240 VAC
  
• Interrupt Rating: 10 kA
  
• Compatible Meter Stacks: 125 Amp and 225 Amp single-phase (WMM, WML, WMT)
  
• Rating: HACR (suitable for heating, AC, refrigeration)
  
• Typical Operating Temp: Rated for environments up to 40 °C
  

Material Compliance and Certifications

• Industry Standards: The Siemens MP280 is manufactured to meet rigorous industry safety and performance standards.
• HACR Certification: Its HACR rating certifies that the breaker is suitable for HVAC loads — including heating, ventilation, air conditioning, and refrigeration. This certification ensures the device performs reliably under approved conditions, giving homeowners and electricians confidence in its long-term operation.

Where It Works Best

• The MP280 shines in a variety of residential environments — especially when installed in meter stacks or as a protective breaker for HVAC circuits. If your home is using a 125 Amp or 225 Amp single‑phase meter stack (WMM, WML, or WMT), this breaker is an excellent match. It’s an ideal pick whether you’re upgrading an older panel for improved safety or wiring a new system from scratch. For homeowners seeking consistent protection with straightforward installation, the MP280 is hard to beat.