{"product_id":"siemens-eh3a003l-circuit-breaker","title":"Siemens | EH3A003L | Circuit Breaker | 3-Pole | 480V","description":"\u003cdiv\u003eSiemens EH3A003L is a rugged 3-pole circuit breaker designed to shield your 480V electrical systems from overloads and short circuits. Built for demanding industrial environments, this unit is a reliable choice for maintenance, retrofit, and replacement projects where exact compatibility matters. \u003ch2\u003eKey details you need to know\u003c\/h2\u003e\n\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\n\u003c\/ul\u003e \u003ch3\u003eWhy this Siemens breaker stands out\u003c\/h3\u003e\n\u003cp\u003eWhen you’re maintaining or upgrading an existing installation, compatibility is mission-critical. The EH3A003L is specifically identified by its part number, making it the clearest reference for ensuring your new breaker matches the original specs and protective characteristics. This is particularly important in complex power distributions where three-phase 480V service is common and consistent trip performance is essential for safety and uptime.\u003c\/p\u003e \u003ch3\u003eIdeal use cases\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eMaintenance and service of three-phase 480V equipment in manufacturing lines, processing plants, and industrial facilities\u003c\/li\u003e \u003cli\u003eRetrofits to refresh aging protection without changing the surrounding panel architecture\u003c\/li\u003e \u003cli\u003eReplacement where exact part-number compatibility guarantees quick, reliable installation\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eWhat to expect in practice\u003c\/h3\u003e\n\u003cp\u003eBecause the EH3A003L is purpose-built for Siemens environments, it typically fits standard Siemens protection schemes and aligns with your existing wiring practices and control strategies. Its 3-pole configuration provides synchronized protection across all three phases, helping prevent uneven loading and potential damage to motors, drives, and other critical equipment.\u003c\/p\u003e \u003ch3\u003eInstallation and compatibility tips\u003c\/h3\u003e\n\u003cp\u003eBefore ordering, confirm the fit and ratings against your current system. The part number EH3A003L is the most reliable reference for ensuring exact compatibility with your Siemens installation. If you’re migrating from an older unit, keep the surrounding enclosure, bus connections, and mounting spacing in mind to minimize downtime during swap-out.\u003c\/p\u003e \u003ch3\u003ePractical guidance for operators and field techs\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eDocument the exact panel and circuit details where the breaker will be installed to avoid mismatches.\u003c\/li\u003e \u003cli\u003eCoordinate replacement timing with maintenance windows to reduce equipment disruption.\u003c\/li\u003e \u003cli\u003eFollow lockout-tagout procedures and verify zero voltage before any handling or replacement work.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eWhy choose Siemens for this role\u003c\/h3\u003e\n\u003cp\u003eSiemens brings a long-standing reputation for reliable protection products designed to work in concert with their broader protection and control ecosystem. The EH3A003L 3-pole 480V breaker is a deliberate choice for technicians who value consistent performance, straightforward compatibility, and a familiarity with Siemens’ protection strategies.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Siemens","offers":[{"title":"Default Title","offer_id":46427522465954,"sku":"EH3A003L","price":510.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0666\/8094\/6850\/files\/master_generic_ad06fdd7-931c-4a09-bfbe-d05329579cd6.png?v=1765492978","url":"https:\/\/www.ampstate.com\/products\/siemens-eh3a003l-circuit-breaker","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}