{"product_id":"zinsco-qcb20-circuit-breaker","title":"Zinsco | QCB20 | Circuit Breaker | 2-Pole | 240V","description":"\u003cdiv\u003e\n\u003cp\u003eMeet the Zinsco QCB20 — a 2-pole, 240V circuit breaker engineered for dependable protection in maintenance, retrofit, and replacement projects. Identified by the exact part number QCB20, this breaker is built to align with the specific specs your panel requires.\u003c\/p\u003e \u003cul\u003e \u003cli\u003e\n\u003cstrong\u003ePoles:\u003c\/strong\u003e 2-Pole\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eVoltage rating:\u003c\/strong\u003e 240V\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eApplications:\u003c\/strong\u003e maintenance, retrofit, replacement\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eBest compatibility reference:\u003c\/strong\u003e part number QCB20\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eImportant:\u003c\/strong\u003e confirm fit and ratings before ordering\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eWhy this matters: using the precise QCB20 ensures your panel's protection scheme remains intact, with correct trip characteristics and physical fit. This is essential for reliable service and code-compliant electrical safety in both residential and light commercial environments.\u003c\/p\u003e \u003cp\u003e\u003cstrong\u003eIdeal use cases\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e \u003cli\u003eReplacing a failed 2-pole 240V breaker in Zinsco panels that require the QCB20 format\u003c\/li\u003e \u003cli\u003eRetrofits to add or upgrade circuits without compromising safety or compatibility\u003c\/li\u003e \u003cli\u003eMaintenance readiness — keep a stock on hand for service calls and panel upgrades\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003e\u003cstrong\u003eHow to verify compatibility\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e \u003cli\u003eCheck that your panel specifies a QCB20-compatible 2-pole, 240V breaker\u003c\/li\u003e \u003cli\u003eEnsure the intended circuit requires a 240V, 2-pole protection and that the trip ratings match the circuit load\u003c\/li\u003e \u003cli\u003eUse the part number QCB20 as the primary reference for compatibility when ordering\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003e\u003cstrong\u003ePractical installation notes\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e \u003cli\u003eAlways de-energize the main disconnect and follow electrical safety procedures before servicing any panel\u003c\/li\u003e \u003cli\u003eConfirm the panel model and service requirements align with the QCB20 specifications to avoid mismatch\u003c\/li\u003e \u003cli\u003eIf in doubt, consult a licensed electrician to validate fit, ratings, and proper installation\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eDesigned for those who demand precise compatibility and dependable protection, the Zinsco QCB20 2-Pole 240V circuit breaker is your solid choice for maintenance, retrofit, and replacement projects. Rely on the exact part number to ensure a correct fit, reliable operation, and sustained electrical safety across your Zinsco panel system.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Zinsco","offers":[{"title":"Default Title","offer_id":46427399356578,"sku":"QCB20","price":510.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0666\/8094\/6850\/files\/zinsco-qcb20-circuit-breaker-2-pole-240v-502.webp?v=1789716419","url":"https:\/\/www.ampstate.com\/products\/zinsco-qcb20-circuit-breaker","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}