{"product_id":"mp390","title":"MP390 - 90 Amp Circuit Breaker","description":"\u003cp\u003e\u003cstrong\u003eMP390 - 90 Amp Circuit Breaker\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe MP390 delivers dependable, high‑quality protection for residential electrical systems that require safe and stable power distribution. This 3‑pole, 240 VAC circuit breaker belongs to the respected MP‑T series—engineered for reliability and long-term service life. Whether you’re wiring a new meter stack or upgrading an existing panel, the MP390 keeps your circuits safe from overloads and short circuits while smoothly handling multi-phase loads.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eKey Features and Benefits\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eThermal‑Magnetic Protection:\u003c\/strong\u003e The breaker’s advanced thermal-magnetic mechanism reacts precisely to both overloads and short circuits, giving you dependable protection without unnecessary interruptions.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e3‑Pole Configuration:\u003c\/strong\u003e Its 3-phase design makes it ideal for complex residential wiring — especially in homes with 100 Amp, 3‑phase output meter stacks.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e240 VAC Voltage Rating:\u003c\/strong\u003e Compatible with a wide range of low-voltage residential power systems for versatile installation.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompact, Easy-to-Install Form Factor:\u003c\/strong\u003e The small footprint simplifies installation and maintenance in tight electrical panels or meter stack enclosures.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHACR Rated for HVAC and Refrigeration Use:\u003c\/strong\u003e Built to meet safety standards for heating, air‑conditioning, and refrigeration circuits — a plus if your system includes heavy-duty HVAC loads.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e10 kA Interrupt Rating:\u003c\/strong\u003e Designed to safely interrupt high fault currents when necessary, providing added safety for demanding residential applications.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTemperature Stability:\u003c\/strong\u003e Optimized to perform reliably even up to 40 °C operational conditions, maintaining consistent protection under heavy load or warm-environment scenarios.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eTechnical Specifications\u003c\/strong\u003e\u003cstrong\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSeries:\u003c\/strong\u003e MP‑T\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePoles:\u003c\/strong\u003e 3‑Pole\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVoltage Rating:\u003c\/strong\u003e 240 VAC\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAmperage Rating:\u003c\/strong\u003e 90 Amp\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInterrupt Rating:\u003c\/strong\u003e 10 kA\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStandards:\u003c\/strong\u003e HACR Rated\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIntended Use:\u003c\/strong\u003e 100 Amp, 3‑phase output WML meter stacks\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDimensions:\u003c\/strong\u003e 2.756 × 2.756 × 2.756 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 0.970 lb (approximately 0.44 kg)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOperating Temperature:\u003c\/strong\u003e Up to 40 °C\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eMaterial Compliance and Certifications\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eIndustry Standards:\u003c\/strong\u003e The MP390 meets recognized industry standards for safe residential circuit protection. Its HACR rating confirms suitability for heating, ventilation, air conditioning, and refrigeration applications — ensuring the breaker can handle large, variable loads typical of HVAC systems. Built with quality materials and precision manufacturing, the MP390 delivers a consistent level of safety and performance homeowners and contractors can trust.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eWhere It Works Best\u003c\/strong\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eThe MP390 shines in residential settings that demand reliable 3-phase power distribution — particularly in homes or small apartment buildings using 100 Amp, 3-phase meter stacks. It’s an excellent choice for households that run heavy-duty appliances, HVAC systems, or multiple circuits with varying loads. If you’re looking for a circuit breaker that balances safety, durability, and ease of installation, the MP390 offers a dependable solution to keep your electrical system running smoothly and securely.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cdiv\u003e\n\u003cbr\u003e\n\u003cdiv\u003e\n\u003cblockquote\u003e\n\u003cp style=\"font-size: 12px;\"\u003e\u003cem\u003eUse 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.\u003c\/em\u003e\u003c\/p\u003e\n\u003c\/blockquote\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"MURRAY","offers":[{"title":"New In Box","offer_id":49504292012331,"sku":"MP390","price":0.0,"currency_code":"USD","in_stock":false},{"title":"Refurbished","offer_id":49504292045099,"sku":"MP390 [R]","price":40.0,"currency_code":"USD","in_stock":true}],"url":"https:\/\/store.circuitbreakersuperstore.com\/products\/mp390","provider":"CIRCUIT BREAKER SUPERSTORE®","version":"1.0","type":"link"}