{"product_id":"zinsco-qb2430100-circuit-breaker","title":"Zinsco | QB2430100 | Circuit Breaker | 100A | 3-Pole | 240V | Bolt-On","description":"\u003cdiv\u003e\n\u003cp\u003eMeet the Zinsco QB2430100 Circuit Breaker — a purpose-built 100A, 3-Pole, 240V bolt-on breaker designed to deliver dependable protection in compatible panels. Built for maintenance, retrofit, and replacement projects, this unit follows the exact specifications you need when updating an electrical distribution system.\u003c\/p\u003e \u003cul\u003e \u003cli\u003eAmperage: 100A\u003c\/li\u003e \u003cli\u003ePoles: 3-Pole\u003c\/li\u003e \u003cli\u003eVoltage: 240V\u003c\/li\u003e \u003cli\u003eMounting: Bolt-On\u003c\/li\u003e \u003cli\u003ePart Number: QB2430100\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eWhy this matters: In essential electrical work, matching the panel’s design and current rating is crucial for safety and performance. The QB2430100 from Zinsco is explicitly suited for maintenance, retrofit, and replacement tasks where a 3-pole, 240V solution with a secure bolt-on mount is required. This isn’t a generic part—it’s a genuine component chosen to align with your panel’s original architecture and protection scheme.\u003c\/p\u003e \u003cp\u003e\u003cstrong\u003eCompatibility reminder:\u003c\/strong\u003e Confirm fit and ratings before ordering. The part number QB2430100 is the best reference for compatibility with Zinsco panels and similar systems.\u003c\/p\u003e \u003cul\u003e \u003cli\u003eIdeal for electricians performing panel retrofits or replacements in residential or light commercial settings that require a 3-pole, 240V protection device.\u003c\/li\u003e \u003cli\u003eGreat for multi-wire branch circuits where simultaneous disconnection across all poles is essential for safety and code compliance.\u003c\/li\u003e \u003cli\u003eWorks in applications where bolt-on mounting is standard, providing a secure, vibration-resistant connection.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eInstallation considerations: This bolt-on breaker should be installed by a qualified electrician. Ensure the hosting panel accepts bolt-on style breakers and that the panel’s labeling and ratings align with the QB2430100 before proceeding. Proper tooling and torque on mounting hardware are important to maintain a reliable, long-lasting connection.\u003c\/p\u003e \u003cp\u003eIn practice, the Zinsco QB2430100 delivers precise protection for 100A circuits across three poles at 240V, making it a focused, reliable choice for panel upgrades, replacements, or new retrofits where its exact specifications are required. Add it to your cart and be ready for your next compatible installation or service task.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Zinsco","offers":[{"title":"Default Title","offer_id":46427399585954,"sku":"QB2430100","price":510.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0666\/8094\/6850\/files\/zinsco-qb2430100-circuit-breaker-100a-3-pole-240v-bolt-429.webp?v=1789716472","url":"https:\/\/www.ampstate.com\/products\/zinsco-qb2430100-circuit-breaker","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}