{"product_id":"siemens-qjh23b090-90a-240v-3-pole-bolt-on-circuit-breaker","title":"Siemens QJH23B090 - 90 A, 240 V, 3-Pole Bolt-On Circuit Breaker | AmpState","description":"\u003cdiv\u003e\n\u003cp\u003eSiemens QJH23B090 is a 3-pole, 90A, 240V bolt-on molded case circuit breaker designed to shield your electrical system from overcurrents and short circuits. Built for panelboards and load centers, it delivers reliable, predictable protection where it matters most.\u003c\/p\u003e \u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eSecure bolt-on mounting\u003c\/strong\u003e: provides a rigid, vibration-resistant connection to the bus, helping maintain consistent protection even in high-activity panels.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eThermal-magnetic trip unit\u003c\/strong\u003e: combines thermal overload protection with instantaneous magnetic tripping for short circuits, delivering stable, repeatable protection response.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eOEM-compatible\u003c\/strong\u003e: designed to fit Siemens-appropriate load centers and panelboards, ensuring proper mechanical and electrical integration.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eVersatile for multiple environments\u003c\/strong\u003e: suitable for residential, commercial, and light industrial applications.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003e\u003cstrong\u003eTechnical snapshot\u003c\/strong\u003e: 90A current rating, 240V voltage, 3 poles, bolt-on mounting. Part number QJH23B090. Type: thermal-magnetic molded case circuit breaker. Manufacturer: Siemens.\u003c\/p\u003e \u003ch3\u003eWhy this breaker stands out for your panel\u003c\/h3\u003e \u003cp\u003eWhen your electrical system runs motors, lighting, and outlets in concert, you need a breaker that responds precisely when needed without unnecessary trips. The QJH23B090’s thermal-magnetic design detects overloads with a controlled thermal response and delivers a swift magnetic trip for short circuits, protecting conductors and equipment while simplifying maintenance.\u003c\/p\u003e \u003cp\u003eIdeal use cases:\u003c\/p\u003e \u003cul\u003e \u003cli\u003eResidential service panels handling balanced 3-phase loads or multi-wire branch circuits in hybrid commercial settings.\u003c\/li\u003e \u003cli\u003eCommercial and light-industrial distribution where reliable 3-pole protection manages 3-phase feeders.\u003c\/li\u003e \u003cli\u003ePanelboard upgrades or replacements requiring Siemens OEM compatibility to maintain system warranty and performance.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003ePractical tips for best results:\u003c\/p\u003e \u003cul\u003e \u003cli\u003ePair this 90A, 240V unit with compatible Siemens load centers to preserve trip characteristics and ensure confident, uniform protection.\u003c\/li\u003e \u003cli\u003eAlways follow safety protocols when installing: disconnect power, use proper tools, and secure mounting hardware to maintain a sturdy bus connection.\u003c\/li\u003e \u003cli\u003eChoose this breaker when you want predictable protection that reduces nuisance trips and safeguards sensitive equipment in mixed-use environments.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"Amp State","offers":[{"title":"Default Title","offer_id":46355162726562,"sku":null,"price":710.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0666\/8094\/6850\/files\/siemens_breaker_and_panel_2ba66dfb-dcc2-4f76-9bfe-f1a80d645820.png?v=1764689872","url":"https:\/\/www.ampstate.com\/products\/siemens-qjh23b090-90a-240v-3-pole-bolt-on-circuit-breaker","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}