{"product_id":"siemens-hed43b040l-circuit-breaker","title":"Siemens | HED43B040L | Circuit Breaker | 3-Pole | 480V","description":"\u003cdiv\u003e\n\u003cp\u003eSiemens HED43B040L is a 3-pole circuit breaker designed for 480V three-phase electrical systems. This original Siemens component is ideal for maintenance, retrofit, and replacement projects where exact compatibility matters, helping you preserve precise protection coordination and system reliability.\u003c\/p\u003e \u003cul\u003e \u003cli\u003e\n\u003cstrong\u003ePoles:\u003c\/strong\u003e 3-Pole\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eVoltage rating:\u003c\/strong\u003e 480V\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003ePart number:\u003c\/strong\u003e HED43B040L (the best reference for compatibility)\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eTypical applications:\u003c\/strong\u003e maintenance, retrofit, and replacement in 3-phase panels and distribution systems\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eKey note:\u003c\/strong\u003e Confirm fit and ratings before ordering to ensure seamless integration\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eWhy this breaker stands out for your 3-phase protection needs\u003c\/h3\u003e\n\u003cp\u003eThe \u003cstrong\u003eSiemens HED43B040L\u003c\/strong\u003e brings a precise, Siemens-engineered solution to systems that demand exact part matching. By using the exact part number, you minimize compatibility risks and maintain the intended trip characteristics across all three phases. This is especially important in industrial environments where downtime is costly and protective coordination with upstream devices matters for safety and reliability.\u003c\/p\u003e \u003ch3\u003eIdeal use cases\u003c\/h3\u003e\n\u003cp\u003eUse this breaker when you need a reliable, drop-in solution for:\u003c\/p\u003e\n\u003cul\u003e \u003cli\u003eRoutine maintenance on 3-phase equipment in manufacturing, processing, or distribution settings\u003c\/li\u003e \u003cli\u003eRetrofits that require matching Siemens specifications to upgrade protection and control schemes\u003c\/li\u003e \u003cli\u003eReplacement of aging or failed breakers in 480V panels where an exact HED43B040L reference is specified\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eInstallation and practical considerations\u003c\/h3\u003e\n\u003cp\u003eBefore purchasing, verify that the \u003cstrong\u003eHED43B040L\u003c\/strong\u003e matches your panel’s catalog and the system’s 480V rating. If in doubt, consult your electrical drawings or contact your Siemens distributor to confirm fit, ratings, and compatibility with surrounding protection devices. This approach helps ensure smooth installation, proper trip coordination, and continued safety of your three-phase electrical distribution.\u003c\/p\u003e \u003ch3\u003eWhat to expect in operation\u003c\/h3\u003e\n\u003cp\u003eOnce installed, you gain the confidence of a trusted Siemens design, designed to align with standard three-phase protection expectations in 480V environments. It’s a practical choice for technicians prioritizing exact part reference, straightforward replacement, and dependable performance within Siemens-compatible panels.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Siemens","offers":[{"title":"Default Title","offer_id":46426758348962,"sku":"HED43B040L","price":2173.0,"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\/siemens-hed43b040l-circuit-breaker","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}