
MP315 - 15 Amp Circuit Breaker Description
MP315 - 15 Amp Circuit Breaker
The Siemens MP315 delivers dependable, high‑performance circuit protection for residential electrical systems. This compact 3‑pole, 15-amp circuit breaker is engineered to operate at 240 VAC — making it an excellent choice for safeguarding load center mains and feeders in homes. Its thermal magnetic trip mechanism provides dual protection against overloads and short circuits, shutting off power quickly if a fault occurs. Designed for easy installation and long-term reliability, the MP315 offers homeowners and electricians alike a simple yet effective way to keep electrical systems safe. With its HACR rating and a high interrupt capacity, this breaker stands out as a dependable solution in HVAC, general residential wiring, and other standard household electrical applications.
Key Features and Benefits
- Two‑fold protection: Thermal and magnetic trip mechanisms guard against both overloads and short circuits, delivering comprehensive circuit safety.
- Compact, installer‑friendly design: The slim, space‑saving form factor fits neatly into most residential load centers and panels, making installation even in tight spots easier.
- High interrupt capacity: With a strong interrupt rating, the MP315 quickly and reliably disconnects faulty currents, helping prevent damage to wiring, devices, and appliances.
- HACR‑rated versatility: Certified for Heating, Air Conditioning, and Refrigeration systems, making it suitable for HVAC circuits as well as general household loads.
- Quality assurance: Manufactured with premium materials to meet rigorous performance standards, ensuring dependable operation over many years of service.
Technical Specifications
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Breaker Type: MP-T series miniature circuit breaker
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Voltage Rating: 240 VAC
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Amperage Rating: 15 Amp
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Poles: 3‑Pole
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Interrupt Rating: High (Interrupt Rating 10)
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Trip Mechanism: Thermal‑magnetic (overload + short circuit protection)
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Operating Temperature: Up to 40 °C
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Weight: 1.323 lb
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Dimensions:
- Length: 12.598 inches
- Width: 3.543 inches
- Depth: 3.15 inches
Material Compliance and Certifications
- Industry Standards: The MP315 is constructed in compliance with industry safety and performance standards. Its HACR‑rated certification attests to its suitability for HVAC circuits, and it meets all required electrical safety regulations applicable to residential circuit protection.
- Durability: Every unit is built using durable materials designed to maintain integrity under typical household operating conditions, ensuring consistent, safe performance over time.
Where It Works Best
- The Siemens MP315 is ideal for new residential installations or panel upgrades, especially where safe, stable circuit protection is critical. It’s particularly suited for protecting load center mains, feeder circuits, and HVAC‑related lines. Whether you're wiring a new home, replacing an older breaker, or upgrading an HVAC panel, the MP315 delivers reliable performance and the peace of mind that comes with quality circuit protection.
Use of Original Equipment Manufacturer (OEM) trademarks, names, and logos is for informational and identification purposes only. This does not imply any affiliation, sponsorship, endorsement, or approval by the original equipment manufacturer. All trademarks and registered trademarks are the property of their respective owners.
Specifications
- Width:3.0
- Height:3.13
- Depth:2.5
- Poles:3
- Amperes:15
- A.I.C. Rating & Volts:10k @ 240VAC
- Type:MP
- Approx Dimensions:3.00"W x 3.13"L x 2.50"D
- Additional Notes:40C, HACR Rated, Plug-In, Thermal-Magnetic Trip Circuit Breaker.
Returns are easy
You may return unused items within 30 days of delivery for a full refund.
FREE shipping on breaker orders over $100 and all other items with orders over $500.
CIRCUIT BREAKER SUPERSTORE® offers one to five day delivery in the United States. The variation depends on the chosen shipping speed and the warehouse location for the product(s).
Same Day Shipping
We strive to ship out your items within one business day.
In rare circumstances, CIRCUIT BREAKER SUPERSTORE® may reserve up to 5 business days to complete shipment. Feel free to contact us if your order is time sensitive.
CIRCUIT BREAKER SUPERSTORE® provides a limited 1-year warranty on both new and reconditioned products. Rest assured, all products are authentic OEM (original equipment manufacturer).



