{"product_id":"siemens-qj23b175-175a-240v-3-pole-bolt-on-circuit-breaker","title":"Siemens QJ23B175 175 Amp 3-Pole Circuit Breaker","description":"\u003cdiv\u003e\n\u003cp\u003eThis AmpState-listed Siemens QJ23B175 is built for reliability in demanding panel installations. With a robust 175A rating at 240V and a 3-pole, bolt-on design, it delivers steadfast branch-circuit protection where it matters most—in panelboards and load centers that power homes, offices, and light industrial equipment.\u003c\/p\u003e \u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eSecure bolt-on mounting\u003c\/strong\u003e provides a rigid, vibration-resistant bus connection, reducing the risk of loose terminations and ensuring consistent electrical performance in busy electrical rooms.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eThermal-magnetic trip unit\u003c\/strong\u003e offers stable, repeatable protection against both overloads and short circuits, maintaining reliable performance across temperature changes and load variations.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eThree-pole configuration\u003c\/strong\u003e supports balanced three-phase circuits common in commercial and light industrial applications, delivering coordinated protection across all phases.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003e175A at 240V\u003c\/strong\u003e rating is ideal for mid-to-large branch circuits powering motors, HVAC controls, lighting circuits, and other demanding loads without compromising protection.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eOEM panel compatibility\u003c\/strong\u003e engineered to fit Siemens load centers and panelboards, ensuring proper fit, trip coordination, and seamless integration into existing installations.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eDurable molded case construction\u003c\/strong\u003e designed for long service life in challenging environments, providing dependable protection over time.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eIdeal for electrical professionals, facilities managers, and maintenance teams seeking a high-current, reliable protection device that integrates smoothly with Siemens panel ecosystems. It’s particularly well-suited for commercial-grade lighting, HVAC-driven loads, and small to mid-size industrial panels where vibration, heat, and continuous operation are factors.\u003c\/p\u003e \u003cul\u003e \u003cli\u003eThree-phase motor circuits in commercial HVAC systems\u003c\/li\u003e \u003cli\u003ePower distribution feeders in panelboards for light industrial setups\u003c\/li\u003e \u003cli\u003eMain or sub-feed protection in bolt-on Siemens panel configurations\u003c\/li\u003e \u003cli\u003eReplacement in existing QJ-series installations to maintain consistent protection and coordination\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003e\u003cstrong\u003eTechnical specifications at a glance:\u003c\/strong\u003e\u003c\/p\u003e \u003cul\u003e \u003cli\u003eManufacturer: Siemens\u003c\/li\u003e \u003cli\u003ePart Number: QJ23B175\u003c\/li\u003e \u003cli\u003eType: Thermal-magnetic molded case circuit breaker\u003c\/li\u003e \u003cli\u003eAmperage Rating: 175A\u003c\/li\u003e \u003cli\u003eVoltage Rating: 240V\u003c\/li\u003e \u003cli\u003eNumber of Poles: 3\u003c\/li\u003e \u003cli\u003eMounting Style: Bolt-on\u003c\/li\u003e \u003cli\u003eApplication: Branch circuit overcurrent and short-circuit protection\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eChoosing the QJ23B175 means opting for a breaker that emphasizes secure installation, precise protection, and compatibility with Siemens electrical systems. It’s a practical, ready-to-install solution for reliable power protection in both new builds and panel upgrades—delivering peace of mind where durability and performance matter most.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Amp State","offers":[{"title":"Default Title","offer_id":46355161645218,"sku":null,"price":710.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0666\/8094\/6850\/files\/siemens-qj23b175-175-a-240-v-3-pole-bolt-on-circuit-breaker-866.webp?v=1788736962","url":"https:\/\/www.ampstate.com\/products\/siemens-qj23b175-175a-240v-3-pole-bolt-on-circuit-breaker","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}