{"product_id":"siemens-qj2b110h-circuit-breaker","title":"Siemens | QJ2B110H | Circuit Breaker | 110A | 2-Pole | 240V","description":"\u003cdiv\u003eSiemens QJ2B110H Circuit Breaker — a precise, ready-to-install protection device engineered for 240V circuits. This 2-pole breaker delivers 110A of interrupting capacity, making it an exact match for maintenance, retrofit, and replacement projects where spec-aligned compatibility is non-negotiable. \u003cp\u003e\u003cstrong\u003eKey specifications at a glance\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eAmperage:\u003c\/strong\u003e 110 A\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003ePoles:\u003c\/strong\u003e 2-Pole\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eVoltage:\u003c\/strong\u003e 240V\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003ePart reference:\u003c\/strong\u003e QJ2B110H\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eSeries:\u003c\/strong\u003e QJ (Siemens)\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003e\u003cstrong\u003eWhy this specific breaker matters\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e \u003cli\u003eExact fit for Siemens panels that require QJ-series protection, ensuring proper mounting, bus compatibility, and coordinated trip behavior with other Siemens devices.\u003c\/li\u003e \u003cli\u003eReliable 110A protection for 240V circuits, suitable for mid-range loads common in residential, commercial, and light-industrial settings.\u003c\/li\u003e \u003cli\u003eUsing the manufacturer’s part number as the reference minimizes mismatch risk during retrofits or replacements, reducing downtime and warranty concerns.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003e\u003cstrong\u003eUse cases and guidance\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e \u003cli\u003eMaintenance: Replace a worn or failed breaker in panels that specify QJ2B110H as the compatible part.\u003c\/li\u003e \u003cli\u003eRetrofit: Update aging protection without changing panel design or mounting footprint, preserving existing electrical architecture.\u003c\/li\u003e \u003cli\u003eReplacement: Quick, code-conscious swap for 240V circuits requiring 110A protective coverage.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003e\u003cstrong\u003ePractical tips for installation and longevity\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e \u003cli\u003eBefore ordering, confirm fit and ratings with your panel documentation—the part number is the most reliable compatibility reference.\u003c\/li\u003e \u003cli\u003eDisconnect power and follow standard electrical safety practices during installation or replacement.\u003c\/li\u003e \u003cli\u003eKeep a spare QJ2B110H on hand for scheduled maintenance or unexpected outages to minimize downtime on critical 240V circuits.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"Siemens","offers":[{"title":"Default Title","offer_id":46427422294178,"sku":"QJ2B110H","price":510.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0666\/8094\/6850\/files\/siemens-qj2b110h-circuit-breaker-110a-2-pole-240v-449.webp?v=1789721283","url":"https:\/\/www.ampstate.com\/products\/siemens-qj2b110h-circuit-breaker","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}