MP340 - 40 Amp Circuit Breaker

MP340 - 40 Amp Circuit Breaker

When it comes to protecting your home’s electrical system, you want components that deliver dependable performance day in and day out. The Siemens MP340 circuit breaker is engineered to do just that — offering dependable, consistent protection against overloads and short circuits. Rated at 40 amps and 240 VAC with a 10 kA interrupt capacity, this 3‑pole breaker is designed to safeguard your residential electrical circuits, especially in demanding situations like HVAC systems. Compact yet powerful, it’s a practical choice to help keep your power distribution safe and stable under varying electrical loads.

Key Features and Benefits

• High‑capacity protection: With a 240 VAC voltage rating and a 10 kA interrupt rating, the MP340 provides high-level protection against overloads, short circuits, and fault currents.
• HACR‑ready: Built to meet HACR standards, this breaker is fully compatible with heating, ventilation, air conditioning, and refrigeration circuits — ensuring safe and reliable operation in HVAC applications.
• Versatile application: The 3‑pole, 40 amp configuration makes it suitable for a wide range of residential settings, including load center mains, feeder circuits, and as a compact miniature circuit breaker.
• Durable build for everyday use: Constructed to handle typical residential electrical demands, the MP340 delivers dependable, long-term performance under varying loads and environmental conditions.
• Peace of mind: Installing a breaker like the MP340 helps prevent potential electrical hazards, helping to maintain safe power distribution across your home.

Technical Specifications

• Type: MP‑T miniature thermal‑magnetic circuit breaker
  
• Voltage Rating: 240 VAC
  
• Amperage Rating: 40 Amp
  
• Interrupting Capacity: 10 kA (kiloamperes)
  
• Number of Poles: 3‑pole
  
• Operating Temperature: 40 °C
  
• Rating Standard: HACR (Heating, Air Conditioning & Refrigeration)
  

Material Compliance and Certifications

• Industry Standards: The Siemens MP340 is manufactured to meet stringent industry and safety standards, including HACR certification — confirming its suitability for HVAC and refrigeration systems. This adherence to recognized electrical norms ensures safe, dependable operation across a variety of residential environments. Every unit is crafted to deliver consistent performance, giving you confidence that your electrical infrastructure is properly protected.

Where It Works Best

• The MP340 excels in residential settings where reliable circuit protection is critical — especially where HVAC systems, water heaters, or heavy appliance loads are involved. It’s ideal for use as a main breaker in load centers, as a feeder breaker supplying sub‑panels, or as a dedicated protective device for 240‑volt circuits. If you’re upgrading or installing a new load center or simply want to ensure safe, uninterrupted power distribution throughout your home, the MP340 is a smart, dependable solution.