{"product_id":"siemens-qj3b090a02-circuit-breaker","title":"Siemens | QJ3B090A02 | Circuit Breaker | 3-Pole | 240V","description":"\u003cdiv\u003e\n\u003cp\u003eMeet the Siemens QJ3B090A02 3-Pole 240V Circuit Breaker — a purpose-built protection device designed for maintenance, retrofit, and replacement projects where precise specs matter. This unit is crafted to slot into compatible Siemens panels, delivering a reliable, drop-in solution without unnecessary adaptations.\u003c\/p\u003e \u003cp\u003e\u003cstrong\u003eKey advantages at a glance\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eThree-pole protection\u003c\/strong\u003e tailored for 3-phase systems, ensuring balanced protection across all conductors in commercial or industrial setups.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003e250V-appropriate platform\u003c\/strong\u003e optimized for 240V operation common in many three-phase installations, helping protect equipment and wiring from overload or fault conditions.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eAuthentic Siemens fit\u003c\/strong\u003e designed to align with Siemens mounting, terminals, and electrical interface, reducing installation adjustments and compatibility concerns.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eClear compatibility reference\u003c\/strong\u003e the part number QJ3B090A02 is the best reference for confirming exact fit and ratings before ordering.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003e\u003cstrong\u003eIdeal use cases\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e \u003cli\u003eReplacing a failed breaker in existing Siemens panels that require a 3-pole, 240V configuration.\u003c\/li\u003e \u003cli\u003eRetrofits and upgrades in small to mid-size commercial electrical rooms that rely on reliable three-phase protection.\u003c\/li\u003e \u003cli\u003eSpare-part provisioning for maintenance teams to minimize downtime during service windows.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003e\u003cstrong\u003eWhy this unit stands out\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e \u003cli\u003eDesigned to maintain panel warranty and performance by ensuring seamless electrical and mechanical compatibility within the Siemens ecosystem.\u003c\/li\u003e \u003cli\u003eProvides consistent operability with other breakers in the same family, helping keep protection schemes straightforward and predictable.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003e\u003cstrong\u003ePractical ordering and installation tips\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e \u003cli\u003eAlways verify fit by cross-referencing your panel model and the QJ3B090A02 part number against official Siemens documentation before purchasing.\u003c\/li\u003e \u003cli\u003ePower down the system and follow proper lockout\/tagout procedures prior to removing or installing the breaker.\u003c\/li\u003e \u003cli\u003eHandle with care to protect terminals and the trip mechanism; store in a clean, dry environment if not installed immediately.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003e\u003cstrong\u003eTechnical snapshot\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e \u003cli\u003ePoles: 3-Pole\u003c\/li\u003e \u003cli\u003eVoltage: 240V\u003c\/li\u003e \u003cli\u003ePart number: QJ3B090A02\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"Siemens","offers":[{"title":"Default Title","offer_id":46427419967650,"sku":"QJ3B090A02","price":510.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0666\/8094\/6850\/files\/siemens-qj3b090a02-circuit-breaker-3-pole-240v-261.webp?v=1789720779","url":"https:\/\/www.ampstate.com\/products\/siemens-qj3b090a02-circuit-breaker","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}