{"product_id":"siemens-qj2b090-circuit-breaker","title":"Siemens | QJ2B090 | Circuit Breaker | 90A | 2-Pole | 240V","description":"\u003cdiv\u003e\n\u003cp\u003eIntroducing the Siemens QJ2B090 Circuit Breaker — a dependable, two-pole solution designed to protect 240-volt circuits with a 90-amp rating. Built for maintenance, retrofit, and replacement projects, this breaker delivers predictable performance when your electrical system needs precise, like-for-like compatibility.\u003c\/p\u003e \u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eAmperage:\u003c\/strong\u003e 90A\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 number reference:\u003c\/strong\u003e QJ2B090 — the best indicator of compatibility\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eImportant note:\u003c\/strong\u003e Confirm fit and ratings before ordering to ensure a seamless replacement\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eWhy choose the Siemens QJ2B090 for your panel protection?\u003c\/p\u003e \u003cul\u003e \u003cli\u003e\u003cstrong_targeted protection for two hot legs:\u003e The 2-pole design safeguards both conductors in a 240V circuit, providing coordinated shutdown in the event of an overload or fault. This is essential for balanced protection in shared-load applications.\u003c\/strong_targeted\u003e\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eReliable, like-for-like replacement:\u003c\/strong\u003e When you’re upgrading or restoring an existing Siemens installation, matching the QJ2B090 ensures consistency with your current breaker family and panel architecture.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eClear compatibility reference:\u003c\/strong\u003e Rely on the part number as your primary guide to fit. The QJ2B090 designation helps you verify that your panel accepts this specific breaker without surprises during installation.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eBuilt for maintenance workflows:\u003c\/strong\u003e Designed to simplify service calls, retrofits, and panel upgrades by providing a straightforward, compatible option that minimizes downtime and guesswork.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eWho should consider this breaker?\u003c\/p\u003e \u003cul\u003e \u003cli\u003eElectrical contractors performing panel retrofits or replacements in 240V circuits.\u003c\/li\u003e \u003cli\u003eFacility maintenance teams safeguarding critical loads that require a 90A, two-pole protection device.\u003c\/li\u003e \u003cli\u003eHome or commercial technicians restoring older Siemens installations to their original protection specs.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003e practical guidance for use and purchase\u003c\/p\u003e \u003cul\u003e \u003cli\u003eUse the part number QJ2B090 as the primary compatibility check when planning replacements or retrofits.\u003c\/li\u003e \u003cli\u003eAlways verify the panel’s acceptance of QJ2B090 by reviewing the panel model and the intended voltage and amperage ratings before placing an order.\u003c\/li\u003e \u003cli\u003eKeep a dedicated spare on hand for proactive maintenance, especially in systems where 240V circuits are critical to daily operations.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eWith the Siemens QJ2B090, you’re choosing a circuit breaker that aligns with Siemens engineering standards, delivers straightforward replacement in right-sized 90A capacity, and supports reliable protection for two hot legs at 240V. If you’re aiming for precise compatibility, clear reference points, and practical maintenance benefits, this two-pole 90A breaker is a thoughtful, dependable choice for your electrical system.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Siemens","offers":[{"title":"Default Title","offer_id":46427429994658,"sku":"QJ2B090","price":510.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0666\/8094\/6850\/files\/master_generic_ad06fdd7-931c-4a09-bfbe-d05329579cd6.png?v=1765492978","url":"https:\/\/www.ampstate.com\/products\/siemens-qj2b090-circuit-breaker","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}