{"product_id":"siemens-fj3b100-circuit-breaker","title":"Siemens | FJ3B100 | Circuit Breaker | 3-Pole | 600V","description":"\u003cdiv\u003e\n\u003cp\u003e\u003cstrong\u003eSiemens FJ3B100\u003c\/strong\u003e is a robust 3‑pole circuit breaker designed for demanding electrical systems. Built for maintenance, retrofit, and replacement projects, it delivers reliable protection where it matters most and ensures you’re working with a trusted Siemens solution.\u003c\/p\u003e \u003cp\u003eWith a \u003cstrong\u003e600V\u003c\/strong\u003e rating and a \u003cstrong\u003e3‑Pole\u003c\/strong\u003e configuration, this breaker is well-suited for 3‑phase distributions and multi‑wire circuits in industrial and commercial environments. The \u003cstrong\u003eFJ3B100\u003c\/strong\u003e part number is the best reference for compatibility with Siemens panels and assemblies, making precise matching easier during replacements or upgrades.\u003c\/p\u003e \u003cul\u003e \u003cli\u003e\n\u003cstrong\u003ePoles:\u003c\/strong\u003e 3‑Pole\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eVoltage rating:\u003c\/strong\u003e 600V\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003ePart number:\u003c\/strong\u003e FJ3B100 (your primary compatibility reference)\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eIntended use:\u003c\/strong\u003e maintenance, retrofit, and replacement in matching‑spec panels\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eIdeal use cases include:\u003c\/p\u003e\n\u003cul\u003e \u003cli\u003eUpgrading older switchgear or panelboards that require the Siemens FJ3B100 for correct protection coordination.\u003c\/li\u003e \u003cli\u003eReplacing worn or failed breakers in 3‑phase distributions common in manufacturing, data centers, and large commercial spaces.\u003c\/li\u003e \u003cli\u003eRetrofits where a 3‑pole, 600V protection device is necessary to maintain safe, code‑compliant operation.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eWhat makes this circuit breaker stand out:\u003c\/p\u003e\n\u003cul\u003e \u003cli\u003eReliable Siemens engineering with a clear part reference to ensure correct fit in compatible assemblies.\u003c\/li\u003e \u003cli\u003eCompact 3‑pole form factor designed to integrate smoothly into standard 3‑phase panelboards while delivering solid overcurrent protection.\u003c\/li\u003e \u003cli\u003eClear compatibility guidance: always confirm the fit and ratings against your panel data or service manual before purchasing.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003ePractical tips for installers and facility managers:\u003c\/p\u003e\n\u003cul\u003e \u003cli\u003eBefore ordering, cross‑check your panel model and the specific circuit requirements to avoid mismatches with the FJ3B100.\u003c\/li\u003e \u003cli\u003eDocument replacement history and the exact part number to streamline future maintenance or retrofits.\u003c\/li\u003e \u003cli\u003eStore spare breakers in their original packaging and note installation torque and wiring guidelines in your service records.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"Siemens","offers":[{"title":"Default Title","offer_id":46426790428834,"sku":"FJ3B100","price":510.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0666\/8094\/6850\/files\/master_generic_16d3a2fb-5d93-424c-9206-5031ec4b178f.png?v=1765492977","url":"https:\/\/www.ampstate.com\/products\/siemens-fj3b100-circuit-breaker","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}