MPP2125KM - 125 Amp Circuit Breaker

MPP2125KM - 125 Amp Circuit Breaker

Upgrade your electrical system with the Siemens MPP2125KM 125‑Amp circuit breaker — a dependable, high-capacity solution engineered to safeguard your circuits whether you’re wiring a home, a cabin, or outfitting a boat. This four‑pole, plug‑in breaker delivers dependable thermal‑magnetic protection and a generous 65 AIC interrupt rating, giving you peace of mind knowing that your wiring is shielded from overloads and fault currents. It’s built to perform in demanding environments, including marine settings and other locations where temperature and reliability matter most.

Key Features and Benefits

• Marine‑Ready Thermal Magnetic Protection: The MPP2125KM uses a thermal‑magnetic trip mechanism, ensuring accurate and dependable interruption of overloads or fault currents.
• Flexible Voltage & Amperage Ratings: Rated for 120/240 V and 125 Amp service, it accommodates a wide range of residential and marine electrical systems.
• Four‑Pole Plug‑In Design: The plug‑in format simplifies installation and maintenance, saving time whether you're upgrading an existing panel or building a new one.
• High Fault Current Capacity: With a 65 AIC interrupt rating, this breaker safely handles significant fault currents — a key attribute for safeguarding your wiring and connected devices.
• Durable in Challenging Conditions: Designed to operate reliably at elevated temperatures (up to 50 °C), making it well suited for demanding environments including marine vessels, cabins, or warm attics.

Technical Specifications

• Voltage Rating: 120/240 V
• Amperage Rating: 125 Amp
• Trip Mechanism: Thermal‑Magnetic
• Interrupt Rating: 65 AIC
• Poles: 4
• Connection Type: Plug‑in
• Dimensions: 6″ × 4″ × 3″ (approx.)
• Net Weight: 2.998 lb
• Packaging Dimensions: 3.937″ × 5.906″ × 2.756″

Material Compliance and Certifications

• UL Standards: The MPP2125KM meets the rigorous requirements of UL 489, ensuring it complies with industry‑recognized safety and performance standards. That certification affirms its suitability not only for residential load‑center mains and feeder applications but also for marine installations where reliability is non-negotiable.

Where It Works Best

• This breaker shines when used as the main or feeder protection in residential load centers, especially in systems that demand 125 Amp service. It’s also a top choice for marine electrical systems — boats, yachts, or shore‑power hookups — where temperature resilience and dependable trip performance are critical. Whether you're upgrading your home’s main panel or equipping a marine vessel for safe power distribution, the Siemens MPP2125KM provides stable, long-term protection you can count on.