{"product_id":"square-d-989316-circuit-breaker","title":"Square D | 989316 | Circuit Breaker | 100A | 3-Pole | 240V | Bolt-On","description":"\u003cdiv\u003e\n\u003cp\u003eIntroducing the Square D 989316 circuit breaker—a reliable 100-amp, 3-pole, 240-volt bolt-on solution designed for maintenance, retrofit, and replacement projects in 3-phase electrical systems.\u003c\/p\u003e \u003cp\u003eKey features at a glance:\u003c\/p\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 240V\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eMounting:\u003c\/strong\u003e Bolt-On\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eWhy this matters:\u003c\/p\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eCompatibility reliability:\u003c\/strong\u003e The 989316 part number is your best reference for matching panels and devices. Always confirm fit and ratings before ordering to avoid mismatches in service panels or enclosures.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eThree-phase protection:\u003c\/strong\u003e The 3-pole configuration provides protection across all live conductors in a 240V, 3-phase system, helping prevent electrical faults from escalating.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eRetrofit and replacement path:\u003c\/strong\u003e When a breaker fails or your panel requires an up-to-date device with the same electrical characteristics, this bolt-on option offers straightforward installation for compatible Square D panels.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eReal-world use cases:\u003c\/p\u003e\n\u003cul\u003e \u003cli\u003eCommercial electrical rooms upgrading panel protection for a 3-phase motor drive or large 240V circuits commonly found in light industrial settings.\u003c\/li\u003e \u003cli\u003eIndustrial maintenance tasks where a direct bolt-on replacement minimizes downtime and keeps panel labeling consistent with existing gear.\u003c\/li\u003e \u003cli\u003eLegacy installations where the existing breaker is no longer available; using the exact part number helps ensure compatibility within the Square D ecosystem.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eInstallation notes and best practices:\u003c\/p\u003e\n\u003cul\u003e \u003cli\u003eBefore ordering, verify that your panel supports bolt-on breakers of the 989316 style and that the 100A, 3-pole 240V ratings match your load requirements.\u003c\/li\u003e \u003cli\u003eTurn off power to the panel, follow manufacturer guidelines, and ensure proper torque on the mounting screws during bolt-on installation.\u003c\/li\u003e \u003cli\u003eLabel the new breaker in your panel schedule to maintain accurate electrical documentation for future maintenance or inspections.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eIn short, the Square D 989316 bolt-on circuit breaker delivers dependable 100A protection for 3-phase 240V service, with a straightforward retrofit path and a clear reference point for compatibility in commercial and industrial panels.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Square D","offers":[{"title":"Default Title","offer_id":46424398069922,"sku":"989316","price":310.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0666\/8094\/6850\/files\/master_generic_a085eff1-75dd-47ee-b131-4c8df8f0489b.png?v=1765492976","url":"https:\/\/www.ampstate.com\/products\/square-d-989316-circuit-breaker","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}