{"product_id":"siemens-hqj3b150h-circuit-breaker","title":"Siemens | HQJ3B150H | Circuit Breaker | 150A | 3-Pole | 240V | Bolt-On","description":"\u003cdiv\u003e\n\u003cp\u003e\u003cstrong\u003eSiemens HQJ3B150H 150A 3-Pole 240V Bolt-On Circuit Breaker\u003c\/strong\u003e delivers robust overcurrent protection for demanding electrical panels. Engineered for maintenance, retrofit, and replacement projects, this unit ensures you can restore or upgrade panel performance without compromising safety or compatibility.\u003c\/p\u003e \u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eAmperage:\u003c\/strong\u003e 150A\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003ePoles:\u003c\/strong\u003e 3-Pole\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eVoltage:\u003c\/strong\u003e 240V\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eMounting:\u003c\/strong\u003e Bolt-On\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003ePart Number:\u003c\/strong\u003e HQJ3B150H\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eKey benefits and use cases:\u003c\/p\u003e \u003cul\u003e \u003cli\u003eIdeal for service upgrades or panel retrofits that require a Siemens bolt-on breaker with 150A capacity and 240V operation.\u003c\/li\u003e \u003cli\u003e3-pole design provides three-phase protection, suitable for commercial equipment, motors, and heavy machinery circuits.\u003c\/li\u003e \u003cli\u003eBolt-On mounting simplifies field installation in compatible Siemens panels, reducing installation time and securing a reliable electrical connection.\u003c\/li\u003e \u003cli\u003eRemember to confirm fit and ratings before ordering—the HQJ3B150H is the best reference for compatibility with your specific panel. The part number itself is your surest match.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eWhat makes this breaker stand out:\u003c\/p\u003e \u003cul\u003e \u003cli\u003eDesigned to align with Siemens panel hardware and trip characteristics, helping maintain panel protection standards.\u003c\/li\u003e \u003cli\u003eStable 240V operation supports high-demand equipment without nuisance tripping when properly sized for the circuit.\u003c\/li\u003e \u003cli\u003eClear, auditable labeling and consistent performance across temperature and load variations.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003ePractical tips for installing and maintenance:\u003c\/p\u003e \u003cul\u003e \u003cli\u003eBefore installation, power down the panel and verify the panel's listing for bolt-on breakers to avoid misfit.\u003c\/li\u003e \u003cli\u003eUse the HQJ3B150H as your compatibility anchor—when the panel documentation references HQJ3B series or HQJ breakers, this part is the intended match.\u003c\/li\u003e \u003cli\u003eIf your system runs motors or equipment with startup surges, ensure the 150A rating aligns with the service and conductor sizing to prevent nuisance trips.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"Siemens","offers":[{"title":"Default Title","offer_id":46427069644962,"sku":"HQJ3B150H","price":510.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0666\/8094\/6850\/files\/master_generic_a0994f42-7fad-49d1-911a-c2784022b8c9.png?v=1765492979","url":"https:\/\/www.ampstate.com\/products\/siemens-hqj3b150h-circuit-breaker","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}