{"product_id":"square-d-q1b290-circuit-breaker","title":"Square D | Q1B290 | Circuit Breaker | 90A | 2-Pole | 240V | Bolt-On","description":"\u003cdiv\u003e\n\u003cp\u003eWhen dependable electrical protection matters, the Square D Q1B290 circuit breaker delivers a rigorous 90-amp, 2-pole, 240-volt solution in a bolt-on design. Engineered for maintenance, retrofit, and replacement projects, this unit is a precise fit for panels that require the Q1B290 form factor and ratings.\u003c\/p\u003e \u003ch3\u003eKey specifications\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eAmperage:\u003c\/strong\u003e 90 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 240 V\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eMounting:\u003c\/strong\u003e Bolt-On\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003ePart reference:\u003c\/strong\u003e Q1B290\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eWhy it matters in your electrical setup\u003c\/h3\u003e\n\u003cp\u003eThis breaker provides precise overcurrent protection for 240V circuits in commercial and residential panels that demand a secure bolt-on connection. The 2-pole configuration safeguards both conductors simultaneously, ensuring simultaneous shutoff in fault conditions and helping protect wiring, devices, and downstream equipment. By using the exact Q1B290 specification, you minimize the guesswork during installation and support long-term panel reliability.\u003c\/p\u003e \u003ch3\u003eIdeal use cases\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eRetrofits in aging panels where the bolt-on, 2-pole 240V form factor is required\u003c\/li\u003e \u003cli\u003eMaintenance swaps to restore original protection on 90A circuits\u003c\/li\u003e \u003cli\u003eReplacement of faulty breakers in systems that operate at 240V with two hot legs\u003c\/li\u003e \u003cli\u003eNew installations in applications that demand robust, vibration-resistant mounting\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eInstallation and compatibility guidance\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eAlways confirm fit and ratings before ordering; the part number Q1B290 is the best reference for compatibility.\u003c\/li\u003e \u003cli\u003eUse in panels designed to accept bolt-on breakers with 240V, 2-pole configurations.\u003c\/li\u003e \u003cli\u003eVerify electrical enclosure and bus-bar specifications align with this breaker’s form factor to ensure a secure, code-compliant installation.\u003c\/li\u003e \u003cli\u003eFollow manufacturer installation instructions and local electrical codes for safe handling and operation.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eWhat sets this Square D option apart\u003c\/h3\u003e\n\u003cp\u003eUnlike generic protectors, the Q1B290 is a purpose-built match for Square D panels that require a 90A, 2-pole, 240V bolt-on breaker. The bolt-on mounting provides a robust, vibration-resistant connection ideal for panels exposed to movement or demanding environments, helping minimize nuisance trips and connection faults over time. With its exact part-number alignment, you gain a straightforward, reliable replacement path that preserves the panel’s original protection strategy.\u003c\/p\u003e \u003cp\u003e\u003cstrong\u003eImportant:\u003c\/strong\u003e Confirm fit and ratings before ordering. The part number is your best reference for compatibility to ensure you get the right device for your specific panel model and electrical requirements.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Square D","offers":[{"title":"Default Title","offer_id":46427238957218,"sku":"Q1B290","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\/square-d-q1b290-circuit-breaker","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}