MPP2125KH - 125 Amp Circuit Breaker

MPP2125KH - 125 Amp Circuit Breaker

The Siemens MPP2125KH is a heavy‑duty 125 Amp circuit breaker built for homeowners who demand safety and dependable performance from their electrical system. Whether you're upgrading an older panel, adding new circuits, or installing a new load center, this breaker brings peace of mind — delivering reliable circuit protection that helps keep your home’s power system running smoothly and safely.

Key Features and Benefits

• Residential‑grade protection: As an MPP‑HT type breaker, the MPP2125KH is designed for residential use, making it ideal for protecting mains, feeders, and branch circuits in your home’s load center.
• 120/240 V compatibility: Works with typical home electrical systems, giving you flexibility across a variety of wiring configurations.
• 125 Amp capacity & 4‑pole design: Offers ample power handling for medium to large panel loads, while the 4‑pole format supports multi‑circuit distribution — useful in larger homes, guest houses, or workshop setups.
• Thermal‑magnetic trip protection: Guards against overloads and short circuits, helping prevent electrical hazards before they can impact your wiring or connected devices.
• 22 AIC interrupt rating: Provides a high fault‑current interruption capability for better protection under fault conditions.
• Plug‑in installation: Makes installation or replacement quick and straightforward — a real benefit if you’re upgrading an existing panel or doing maintenance.

Technical Specifications

• Type: MPP‑HT
  
• Voltage Rating: 120/240 V
  
• Amperage: 125 Amp
  
• Poles: 4P
  
• Trip Mechanism: Thermal‑magnetic
  
• Interrupt Rating: 22 AIC
  
• Mounting / Connection Type: Plug‑in
  
• Dimensions (approx.): 6 in (length) × 4 in (width) × 3 in (height)
  
• Net Weight: ~2.998 lbs
  
• Packaging Size: 3.937 × 5.906 × 2.756 inches
  
• Standards: UL 489 compliant
  

Material Compliance and Certifications

• UL 489 Certified: The Siemens MPP2125KH is manufactured to meet rigorous safety and quality standards. Its UL 489 certification confirms that it adheres to recognized safety requirements, giving you assurance that it’s suitable for residential electrical systems.
• High-Grade Construction: Built from high-grade materials and engineered to last, this breaker offers reliable long-term performance under normal home usage.

Where It Works Best

• This breaker is an excellent choice for homeowners upgrading an existing panel, building a new home wiring setup, or expanding their electrical system to support additional capacity. It’s particularly suited for main panels, feeder circuits, or multi‑circuit branch distribution — for example, when adding a dedicated line for a workshop, HVAC system, or home renovation. If you’re aiming to boost safety, ensure compliant protection, or simply future‑proof your home’s electrical infrastructure, the MPP2125KH delivers the dependable protection you need.