{"product_id":"thomas-betts-fs320045a-circuit-breaker","title":"Thomas \u0026 Betts | FS320045A | Circuit Breaker | 45A | 3-Pole | 240V | Feed-Through","description":"\u003cdiv\u003e\n\u003cp\u003ePower your 3‑phase systems with precision using the Thomas \u0026amp; Betts FS320045A Circuit Breaker. This 45A, 3‑Pole, 240V unit features a feed‑through design tailored for maintenance, retrofit, and replacement projects where exact compatibility matters. The FS320045A is the definitive reference for ensuring you match the right specifications in your panel, helping you minimize downtime and keep critical equipment protected.\u003c\/p\u003e \u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eAmperage:\u003c\/strong\u003e 45A\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\u003eDesign:\u003c\/strong\u003e Feed‑Through\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eWhy the FS320045A is a smart choice\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eDedicated compatibility: When servicing 3‑phase panels, this breaker provides a precise fit that aligns with common Thomas \u0026amp; Betts panel configurations, reducing guesswork during retrofits.\u003c\/li\u003e \u003cli\u003eStreamlined wiring with feed‑through: The feed‑through construction enables direct continuation of downstream feeders, cutting extra junctions and potential connection points.\u003c\/li\u003e \u003cli\u003eTargeted for replacements: Ideal for replacing aging or failed breakers in existing 3‑pole 240V systems without compromising circuit protection.\u003c\/li\u003e \u003cli\u003eDurable, field‑ready design: Built to withstand ongoing electrical demand in commercial and light industrial environments while preserving panel integrity.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eIdeal use cases\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eRetrofit projects in commercial panels where a precise 45A, 3‑pole 240V capacity is required.\u003c\/li\u003e \u003cli\u003eMaintenance and replacement of aging 3‑phase equipment in manufacturing, HVAC, and processing facilities.\u003c\/li\u003e \u003cli\u003eNew installations where a feed‑through circuit breaker simplifies downstream wiring and reduces panel complexity.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eImportant note: confirm fit and ratings before ordering. The part number FS320045A is the best reference for compatibility, so double‑check your panel’s specifications and downstream wiring requirements to ensure a seamless install.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Thomas \u0026 Betts","offers":[{"title":"Default Title","offer_id":46424375034018,"sku":"FS320045A","price":310.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0666\/8094\/6850\/files\/thomas-betts-fs320045a-circuit-breaker-45a-3-pole-240v-feed-479.webp?v=1789346553","url":"https:\/\/www.ampstate.com\/products\/thomas-betts-fs320045a-circuit-breaker","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}