{"product_id":"westinghouse-jb3100-circuit-breaker","title":"Westinghouse | JB3100 | Circuit Breaker | 100A | 3-Pole | 600V","description":"\u003cdiv\u003e\n\u003cp\u003eThe Westinghouse JB3100 circuit breaker is a purpose-built solution for upgrading and maintaining three-phase electrical systems. With a 100-amp rating, a 3-pole design, and a 600V maximum, it’s engineered to protect feeders and motors in commercial and light industrial panels. This unit is a reliable choice for projects that demand exact spec matching and dependable overcurrent protection.\u003c\/p\u003e \u003cp\u003eWhy choose the JB3100 for your project? Its exact specifications align with legacy installations, helping you minimize downtime during maintenance, retrofit, or replacement. By sticking to the original part reference, you preserve panel architecture and protective characteristics, reducing the risk of compatibility issues.\u003c\/p\u003e \u003ch2\u003eKey specifications\u003c\/h2\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eAmperage:\u003c\/strong\u003e 100A\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003ePoles:\u003c\/strong\u003e 3-Pole\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eVoltage:\u003c\/strong\u003e 600V\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003ePart number:\u003c\/strong\u003e JB3100\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch2\u003eCompatibility and installation considerations\u003c\/h2\u003e\n\u003cul\u003e \u003cli\u003eConfirm fit and ratings before ordering—the \u003cstrong\u003eJB3100\u003c\/strong\u003e reference is your best indicator for compatibility with Westinghouse panels and legacy installations.\u003c\/li\u003e \u003cli\u003eIdeal for maintenance, retrofit, and replacement projects where exact spec matching is required.\u003c\/li\u003e \u003cli\u003eEnsure power is fully de-energized and follow standard electrical safety practices during installation; professional installation is recommended for all three-phase circuits.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch2\u003eWho this is for\u003c\/h2\u003e\n\u003cul\u003e \u003cli\u003eElectrical contractors and facilities teams performing panel upgrades or replacements.\u003c\/li\u003e \u003cli\u003eManufacturers and OEMs integrating or updating three-phase protection in commercial or light industrial environments.\u003c\/li\u003e \u003cli\u003eMaintenance technicians seeking a direct-spec replacement to minimize downtime and maintain system continuity.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eWhen you need dependable, spec-accurate protection for three-phase systems up to 600V, the Westinghouse JB3100 100A 3-Pole circuit breaker delivers a precise, drop-in replacement that keeps your electrical infrastructure running smoothly.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Westinghouse","offers":[{"title":"Default Title","offer_id":46427252654242,"sku":"JB3100","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\/westinghouse-jb3100-circuit-breaker","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}