{"product_id":"na340-circuit-breaker","title":"NA340 | Circuit Breaker | 40A | 3-Pole | 240V","description":"\u003cdiv\u003e\n\u003cp\u003eIntroducing the NA340: a rugged industrial circuit breaker built for reliability in demanding environments. With a precise 40A rating, a 3-pole footprint, and 240V operation, this unit is designed for maintenance, retrofit, and replacement projects where exact specifications matter. When your panel or equipment calls for the NA340, you get a dependable, straightforward solution that minimizes downtime and confirms ongoing protection for your electrical system.\u003c\/p\u003e \u003ch2\u003eWhy the NA340 stands out\u003c\/h2\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cstrong\u003e40A protection\u003c\/strong\u003e tailored for 240V circuit protection in industrial settings.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003e3-Pole design\u003c\/strong\u003e consolidates protection across all three conductors in a single device, simplifying wiring and maintenance.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eDirect-match replacement\u003c\/strong\u003e when your system specifies the NA340—reducing guesswork and compatibility issues.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eIndustrial-grade reliability\u003c\/strong\u003e purpose-built for maintenance, retrofit, and replacement tasks in demanding environments.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eKey specifications at a glance\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eAmperage:\u003c\/strong\u003e 40A\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\n\u003c\/ul\u003e \u003cp\u003e\u003cstrong\u003eCompatibility and fit\u003c\/strong\u003e — Confirm fit and ratings before ordering. The part number NA340 is the most reliable reference for compatibility with your panel or equipment, ensuring a seamless installation and reliable protection.\u003c\/p\u003e \u003ch3\u003eIdeal use cases\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eMaintenance projects where an aging or failed 3-pole 240V breaker needs replacement.\u003c\/li\u003e \u003cli\u003eRetrofit initiatives upgrading electrical systems to 240V with a 3-pole protection strategy.\u003c\/li\u003e \u003cli\u003eReplacement scenarios in industrial panels that specify the NA340 as the correct part number.\u003c\/li\u003e \u003cli\u003eSpare-part readiness for facilities that emphasize quick downtime recovery and consistent protection.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003ePractical guidance for installation and care\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eBefore handling, shut down power and verify zero voltage to avoid risk during replacement.\u003c\/li\u003e \u003cli\u003eEnsure the mounting and bus-bar configuration matches a 3-Pole 240V setup for proper seating and operation.\u003c\/li\u003e \u003cli\u003eKeep the NA340 in the spare parts kit, noting the exact part number for future maintenance or replacements.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"AmpState","offers":[{"title":"Default Title","offer_id":46426762838178,"sku":"NA340","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\/na340-circuit-breaker","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}