{"product_id":"siemens-eh3a030-circuit-breaker","title":"Siemens | EH3A030 | Circuit Breaker | 30A | 3-Pole | 480V","description":"\u003cdiv\u003e\n\u003cp\u003eIntroducing the Siemens EH3A030 Circuit Breaker—a precise, three-pole overcurrent protection device designed for 480V three-phase power systems. Built for maintenance, retrofit, and replacement projects, this 30A breaker keeps your industrial distribution reliable while aligning with existing Siemens infrastructure.\u003c\/p\u003e \u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eAmperage:\u003c\/strong\u003e 30 A\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003ePoles:\u003c\/strong\u003e 3-Pole\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eVoltage rating:\u003c\/strong\u003e 480 V\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003e\u003cstrong\u003eKey advantages\u003c\/strong\u003e\u003c\/p\u003e \u003cul\u003e \u003cli\u003eDirect compatibility with panels and equipment designed for EH3A030, making it a dependable replacement when the part number EH3A030 is required.\u003c\/li\u003e \u003cli\u003eThree-pole coordination ensures simultaneous disconnection of all phases, improving safety and reducing the risk of phase imbalance during faults or startup.\u003c\/li\u003e \u003cli\u003eCompact form factor and Siemens engineering guarantee consistent performance in demanding industrial environments.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003e\u003cstrong\u003eUse cases and scenarios\u003c\/strong\u003e\u003c\/p\u003e \u003cul\u003e \u003cli\u003eRetrofit an existing 480V, three-phase distribution panel where the EH3A030 specification matches the original design.\u003c\/li\u003e \u003cli\u003eReplace worn or failed breakers in manufacturing lines, data centers, or heavy equipment rooms that rely on 3-phase protection.\u003c\/li\u003e \u003cli\u003eDuring routine maintenance, swap in an identical EH3A030 to minimize downtime and preserve system electrical characteristics.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003e\u003cstrong\u003eCompatibility and installation notes\u003c\/strong\u003e\u003c\/p\u003e \u003cul\u003e \u003cli\u003eAlways confirm fit and ratings before ordering. The part number EH3A030 is the best reference for compatibility with your system.\u003c\/li\u003e \u003cli\u003eVerify that your panel or chassis supports 480V three-phase operation and 30A overcurrent protection.\u003c\/li\u003e \u003cli\u003eFor safe installation, de-energize the circuit and follow standard electrical safety practices. If you’re unsure, consult a licensed electrician or the equipment manufacturer’s guidance.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003e\u003cstrong\u003eWhy Siemens for overcurrent protection\u003c\/strong\u003e\u003c\/p\u003e \u003cul\u003e \u003cli\u003eRenowned reliability and consistency across industrial power systems.\u003c\/li\u003e \u003cli\u003eStandardized specs that simplify stocking and maintenance across multi-site operations.\u003c\/li\u003e \u003cli\u003eDirect replacement in environments where Siemens EH3A030 is specified, reducing configuration or mounting challenges.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"Siemens","offers":[{"title":"Default Title","offer_id":46427522302114,"sku":"EH3A030","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-eh3a030-circuit-breaker","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}