{"product_id":"siemens-e43a040-40a-3p-480v-circuit-breaker","title":"Siemens E43A040 Circuit Breaker, 40A, 3-Pole, 480V","description":"\u003cdiv\u003e\n\u003cp\u003e\u003cstrong\u003eSiemens E43A040 Circuit Breaker\u003c\/strong\u003e — a rugged, three-pole protection solution designed for demanding industrial electrical service, maintenance, and replacement projects. With a 40 A rating and 480 V operating capability, this breaker helps keep three-phase systems safe and reliable in real-world plants and facilities.\u003c\/p\u003e \u003ch3\u003eKey specifications\u003c\/h3\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 E43A040\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eProduct Type:\u003c\/strong\u003e Circuit Breaker\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eAmperage:\u003c\/strong\u003e 40 A\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003ePoles:\u003c\/strong\u003e 3\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eVoltage:\u003c\/strong\u003e 480 V\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eWhy this Siemens breaker stands out\u003c\/h3\u003e\n\u003cp\u003eDesigned for industrial environments, the E43A040 delivers dependable protection across all three phases in 480V systems. The 3-pole configuration ensures balanced interruption and coordinated protection for motor drives, panel distributions, and essential equipment — reducing the risk of partial faults and downtime.\u003c\/p\u003e \u003ch3\u003eCompatibility and fit verification\u003c\/h3\u003e\n\u003cp\u003eUse the part number \u003cstrong\u003eE43A040\u003c\/strong\u003e to confirm compatibility with your specific panel or equipment. Verify fit by part number and application requirements to ensure seamless replacement or integration into your existing electrical layout.\u003c\/p\u003e \u003ch3\u003eIdeal use cases\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eNew industrial installations requiring reliable 3-phase protection at 480V\u003c\/li\u003e \u003cli\u003ePanel upgrades or retrofits in manufacturing, processing, or automation environments\u003c\/li\u003e \u003cli\u003eMaintenance cycles and swift replacement of worn breakers to minimize downtime\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003ePractical tips for installation and use\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eBefore installation, power down the service and confirm all circuit connections match the three-phase configuration\u003c\/li\u003e \u003cli\u003eConsult your electrical diagrams to ensure the 3-pole, 480V rating aligns with the protected load\u003c\/li\u003e \u003cli\u003eHandle the device with standard safety practices for high-voltage components\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eSupport and compatibility help\u003c\/h3\u003e\n\u003cp\u003eNeed help matching a part number or confirming compatibility with your system? \u003cstrong\u003eMessage us\u003c\/strong\u003e and we’ll assist in verifying fit and suitability for your application.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"AmpState","offers":[{"title":"Default Title","offer_id":46416016474274,"sku":"E43A040","price":460.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0666\/8094\/6850\/files\/master_generic_513d6710-3734-4b27-839d-f68e6f4b470a.png?v=1765492974","url":"https:\/\/www.ampstate.com\/products\/siemens-e43a040-40a-3p-480v-circuit-breaker","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}