{"product_id":"siemens-ed43b040l-40a-480v-3-pole-circuit-breaker","title":"Siemens ED43B040L - 40 A, 480 V, 3-Pole Circuit Breaker | AmpState","description":"\u003cdiv\u003e\n\u003cp\u003eMeet the Siemens ED43B040L — a 40A, 480V, 3-pole molded case circuit breaker designed to safeguard your panelboards and load centers from overcurrent and short-circuit events. Built for dependable branch circuit protection in commercial, residential, and light industrial environments, this unit blends compact efficiency with robust performance.\u003c\/p\u003e \u003ch2\u003eWhy the ED43B040L stands out\u003c\/h2\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eSpace‑savvy design\u003c\/strong\u003e: Compact molded case format optimizes panel space without compromising protection, making it ideal for tight electrical closets and dense distribution boards.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eThermal‑magnetic trip unit\u003c\/strong\u003e: Delivers stable, repeatable protection for both overloads and short circuits across a range of load conditions.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003e OEM compatibility\u003c\/strong\u003e: Specifically designed to pair with matching Siemens OEM load centers and panelboards for seamless installation and reliable performance.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eThree‑phase, 480V protection\u003c\/strong\u003e: Perfect for 3‑phase distribution in commercial spaces and light industrial setups, where consistent phase safety matters.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eTargeted protection\u003c\/strong\u003e: Focused on branch circuit overcurrent and short‑circuit scenarios, helping prevent equipment damage and downtime in critical systems.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch2\u003eIdeal applications and use cases\u003c\/h2\u003e\n\u003cul\u003e \u003cli\u003eNew installations in panelboards and load centers that require 3‑pole, 480V protection for commercial electrical rooms, data centers, and retail spaces.\u003c\/li\u003e \u003cli\u003eReplacement of existing Siemens breakers in residential, commercial, or light industrial panels to maintain OEM compatibility and predictably protect critical circuits.\u003c\/li\u003e \u003cli\u003eDistribution circuits feeding HVAC, lighting, and power distribution in small to mid‑sized facilities where space is at a premium.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch2\u003eWhat problems does it solve?\u003c\/h2\u003e\n\u003cul\u003e \u003cli\u003ePrevents damage from overcurrent conditions and short circuits, helping extends equipment life and reduce downtime.\u003c\/li\u003e \u003cli\u003eMaintains reliable protection with a consistent thermal‑magnetic response across varying load profiles.\u003c\/li\u003e \u003cli\u003ePreserves panel organization and simplifies upgrades by aligning with Siemens’ family of OEM load centers and panelboards.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch2\u003eTechnical specifications\u003c\/h2\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eManufacturer:\u003c\/strong\u003e Siemens\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003ePart Number:\u003c\/strong\u003e ED43B040L\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e Thermal‑magnetic molded case circuit breaker\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eAmperage Rating:\u003c\/strong\u003e 40A\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eVoltage Rating:\u003c\/strong\u003e 480V\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eNumber of Poles:\u003c\/strong\u003e 3\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eApplication:\u003c\/strong\u003e Branch circuit overcurrent and short‑circuit protection\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eDesigned for installers who value reliability, compatibility, and space efficiency, the Siemens ED43B040L is a practical choice for safeguarding distribution networks in a variety of settings. Its precise, predictable trip behavior and OEM‑matched compatibility help ensure smooth operation and easier maintenance across the life of the installation.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Amp State","offers":[{"title":"Default Title","offer_id":46349789790370,"sku":null,"price":710.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0666\/8094\/6850\/files\/siemens_breaker_and_panel_9192c1cb-21f4-4747-9b57-c64d19c91f0e.png?v=1764156824","url":"https:\/\/www.ampstate.com\/products\/siemens-ed43b040l-40a-480v-3-pole-circuit-breaker","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}