{"product_id":"q21520ct","title":"Q21520CT - Quadplex 15\/20 Circuit Breaker","description":"\u003cp\u003e\u003cstrong\u003eQ21520CT - Quadplex 15\/20 Circuit Breaker\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe Q21520CT quadplex circuit breaker is designed for electricians and contractors who need to add circuits without giving up valuable panel space. Combining 15-amp and 20-amp protection in a single QT frame unit, this plug-in breaker provides dependable overcurrent protection for 120\/240VAC systems. With a 10kA interrupting capacity, it’s built to safely clear fault currents in typical residential and light commercial applications. The common trip feature ensures paired circuits disconnect together, adding an extra layer of safety where multi-wire branch circuits or shared neutrals are involved. Rated for 40°C environments and carrying an HACR classification, the Q21520CT is well suited for HVAC-related equipment as well as general-purpose branch circuits.\u003c\/p\u003e\n\u003cp\u003eInstead of crowding your panel with multiple breakers, this quadplex configuration helps you make better use of available space while maintaining reliable circuit protection. It’s a practical choice for service upgrades, remodels, or new installations where efficiency matters.\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\u003eQuadplex Design (15A\/20A):\u003c\/strong\u003e Two double-pole breakers in one compact unit to maximize panel capacity.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e10kA @ 120\/240VAC:\u003c\/strong\u003e Safely interrupts fault currents up to 10,000 amperes.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCommon Trip:\u003c\/strong\u003e Both poles trip together for improved safety and code compliance.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePlug-In Mounting:\u003c\/strong\u003e Quick, straightforward installation in compatible QT panelboards.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHACR Rated:\u003c\/strong\u003e Suitable for heating, air conditioning, and refrigeration equipment.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e40°C Rated:\u003c\/strong\u003e Handles higher ambient temperatures common in electrical rooms.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eTechnical Specifications\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart Number:\u003c\/strong\u003e Q21520CT\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePoles:\u003c\/strong\u003e Quadplex\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAmperage:\u003c\/strong\u003e 15\/20 Amp\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVoltage:\u003c\/strong\u003e 120\/240VAC\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInterrupting Rating:\u003c\/strong\u003e 10kA\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFrame Type:\u003c\/strong\u003e QT\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTrip Type:\u003c\/strong\u003e Common Trip\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMounting:\u003c\/strong\u003e Plug-In\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAmbient Rating:\u003c\/strong\u003e 40°C\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHACR Rated:\u003c\/strong\u003e Yes\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHeight:\u003c\/strong\u003e 3.13 in.\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShip Weight:\u003c\/strong\u003e 2.0 lbs\u003cbr\u003e\n\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 Manufactured to meet established industry standards for molded case circuit breakers, the Q21520CT supports installations that require a 10kA interrupting rating at 120\/240VAC.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHACR Rating:\u003c\/strong\u003e The HACR rating confirms its suitability for HVAC applications when installed according to applicable electrical codes. As with any breaker, compatibility with the specific load center should be verified prior to installation.\u003cbr\u003e\n\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 Q21520CT is commonly used in residential panels, apartment units, light commercial spaces, and small office environments where additional circuits are needed but panel space is limited. It’s especially useful for HVAC systems, air conditioning units, refrigeration equipment, and multi-wire branch circuits that require paired protection with common trip functionality.\u003cbr\u003e\n\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.\u003cstrong\u003e CIRCUIT BREAKER SUPERSTORE®\u003c\/strong\u003e is an independent reseller and is \u003cstrong\u003enot \u003c\/strong\u003ean authorized distributor, affiliate, or representative of any manufacturer. Manufacturer warranties do \u003cstrong\u003enot\u003c\/strong\u003e apply unless expressly stated. All trademarks and registered trademarks are the property of their respective owners.\u003c\/em\u003e\u003c\/p\u003e\n\u003cp style=\"font-size: 12px;\"\u003e\u003cem\u003eSiemens®, I-T-E®, and Murray® are registered trademarks of Siemens AG. Products sold are surplus, used, or refurbished and are \u003cstrong\u003eNOT \u003c\/strong\u003esupplied by Siemens AG or its affiliates.\u003c\/em\u003e\u003c\/p\u003e\n\n\u003c\/blockquote\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"SIEMENS","offers":[{"title":"New","offer_id":52226497511723,"sku":"Q21520CT","price":44.95,"currency_code":"USD","in_stock":true}],"url":"https:\/\/store.circuitbreakersuperstore.com\/products\/q21520ct","provider":"CIRCUIT BREAKER SUPERSTORE®","version":"1.0","type":"link"}