{"product_id":"zinsco-qb243015-circuit-breaker","title":"Zinsco | QB243015 | Circuit Breaker | 3-Pole | Bolt-On","description":"\u003cdiv\u003e\n\u003cp\u003eThe Zinsco QB243015 Circuit Breaker is a 3-Pole, bolt-on solution designed for reliable protection in panels that require three hot conductors in a single device. Built for maintenance, retrofit, and replacement projects, this breaker helps you keep electrical systems safe and up to code when exact specifications matter.\u003c\/p\u003e \u003ch3\u003eKey features that stand out\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cstrong\u003e3-Pole configuration\u003c\/strong\u003e supports three hot conductors in one unit, suitable for multi-wire branch circuits or specific panel requirements in compatible Zinsco enclosures.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eBolt-On mounting\u003c\/strong\u003e provides a secure, vibration-resistant connection for dependable performance in demanding environments.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003ePart reference QB243015\u003c\/strong\u003e serves as the primary compatibility anchor—verify this exact model to ensure a correct fit before ordering.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eMaintenance, retrofit, and replacement ready\u003c\/strong\u003e — designed to be swapped in for ongoing service or panel upgrades where a three-pole bolt-on breaker is required.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eDesigned for legacy Zinsco panels\u003c\/strong\u003e where precise spec matching and mounting compatibility are essential for safe operation.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eCompatibility and installation guidance\u003c\/h3\u003e\n\u003cp\u003eTo ensure a proper fit, use the QB243015 part number as your reference point and confirm the exact ratings and amperage are appropriate for your panel configuration. This breaker is intended for panels that support 3-Pole bolt-on protection, so always cross-check with your panel label and the enclosure’s mounting provisions before purchasing.\u003c\/p\u003e \u003ch3\u003eIdeal use cases\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eMaintenance and replacement in existing Zinsco panels that require a 3-pole bolt-on breaker.\u003c\/li\u003e \u003cli\u003eRetrofits and panel upgrades where a precise, three-conductor protection device is needed.\u003c\/li\u003e \u003cli\u003eRepairs for multi-wire circuits that demand a single, reliable 3-pole solution.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003ePractical tips for a smooth install\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003ePower down the panel and verify absence of voltage before handling any breakers.\u003c\/li\u003e \u003cli\u003eConsult a licensed electrician to confirm compatibility with your specific enclosure and to adhere to proper installation torque and safety practices.\u003c\/li\u003e \u003cli\u003eKeep the QB243015 reference handy during ordering to avoid cross-reference mismatches and ensure correct part matching.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eChoosing this Zinsco 3-Pole bolt-on breaker means selecting a targeted, retrofit-ready solution for panels that require precise compatibility. If your project calls for a secure bolt-on connection and three-pole protection, the QB243015 is the dedicated choice for compatible enclosures, providing reliable performance in maintenance, retrofit, and replacement scenarios.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Zinsco","offers":[{"title":"Default Title","offer_id":46426789216418,"sku":"QB243015","price":510.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0666\/8094\/6850\/files\/zinsco-qb243015-circuit-breaker-3-pole-bolt-532.webp?v=1789622089","url":"https:\/\/www.ampstate.com\/products\/zinsco-qb243015-circuit-breaker","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}