{"product_id":"thomas-betts-fs340020a-circuit-breaker","title":"Thomas \u0026 Betts | FS340020A | Circuit Breaker | 20A | 3-Pole | 480V","description":"\u003cdiv\u003e\n\u003cp\u003eMeet the Thomas \u0026amp; Betts FS340020A circuit breaker—an purpose-built solution for industrial power panels requiring reliable 480V three-phase protection. This 20A, 3-pole device is designed for maintenance, retrofit, and replacement projects where exact spec matching matters.\u003c\/p\u003e \u003cp\u003e\u003cstrong\u003eWhy this FS340020A stands out\u003c\/strong\u003e\u003c\/p\u003e \u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eExact compatibility:\u003c\/strong\u003e Part FS340020A is the best reference for ensuring you’re pairing the right breaker with your panel and equipment.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003e480V three-phase protection:\u003c\/strong\u003e Engineered to interrupt and protect 3-phase 480V circuits, helping prevent equipment damage and unplanned downtime.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003e20A circuit rating:\u003c\/strong\u003e Ideal for protecting motors, contactors, and control circuits without nuisance trips in standard industrial loads.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eMaintenance, retrofit, replacement-ready:\u003c\/strong\u003e A practical choice for ongoing system upgrades, panel modernization, or replacing aging breakers in service-critical environments.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eDurable, established brand:\u003c\/strong\u003e Thomas \u0026amp; Betts reliability you can count on in industrial electrical infrastructure.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003e\u003cstrong\u003eKey specs at a glance\u003c\/strong\u003e\u003c\/p\u003e \u003cul\u003e \u003cli\u003eAmperage: 20A\u003c\/li\u003e \u003cli\u003ePoles: 3-Pole\u003c\/li\u003e \u003cli\u003eVoltage: 480V\u003c\/li\u003e \u003cli\u003ePart number: FS340020A\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003e\u003cstrong\u003eUse cases and installation guidance\u003c\/strong\u003e\u003c\/p\u003e \u003cp\u003eThis breaker is well-suited for three-phase equipment in manufacturing lines, HVAC systems in large facilities, and data-center floor infrastructure where 480V services are common. Before ordering, verify that the breaker’s fit and ratings align with your panel’s model and the equipment it protects. If your system documents list FS340020A as the required replacement, you’re likely maximizing compatibility and maintaining protective coordination with existing devices.\u003c\/p\u003e \u003cp\u003ePractical tips:\u003c\/p\u003e \u003cul\u003e \u003cli\u003eDouble-check the panel schedule and the electrical diagram to confirm the FS340020A is the correct replacement for your 3-pole 480V circuit.\u003c\/li\u003e \u003cli\u003eMaintain coordination with upstream protection and downstream devices to ensure proper tripping behavior during faults.\u003c\/li\u003e \u003cli\u003eStore spare FS340020A breakers in a clean, dry location to preserve performance and longevity.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"Thomas \u0026 Betts","offers":[{"title":"Default Title","offer_id":46424512004258,"sku":"FS340020A","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\/thomas-betts-fs340020a-circuit-breaker","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}