{"product_id":"siemens-eh3a125-circuit-breaker","title":"Siemens | EH3A125 | Circuit Breaker | 125A | 3-Pole | 480V","description":"\u003cdiv\u003e\n\u003cp\u003eMeet the Siemens EH3A125, a purpose-built circuit breaker engineered for demanding 480V three-phase systems. With a 125A rating and a 3-pole configuration, it’s purposefully designed for maintenance, retrofit, and replacement projects where exact specifications matter.\u003c\/p\u003e \u003ch3\u003eKey specifications at a glance\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eAmperage:\u003c\/strong\u003e 125A\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003ePole count:\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\u003eReliable performance for maintenance, retrofit \u0026amp; replacement\u003c\/h3\u003e\n\u003cp\u003eWhether you’re upgrading an aging panel, replacing a failed breaker, or retrofitting to support new equipment, the EH3A125 delivers predictable protection for 3-phase circuits. Its precise 125A rating ensures the right balance between safeguarding connected loads and avoiding unnecessary trips, keeping critical processes running smoothly.\u003c\/p\u003e \u003ch3\u003eCompatibility you can verify with confidence\u003c\/h3\u003e\n\u003cp\u003eBefore ordering, confirm fit and ratings against your equipment. The \u003cstrong\u003epart number EH3A125\u003c\/strong\u003e is the best reference for compatibility, helping you avoid mismatches in panel type, busbar arrangement, or interrupting capability. Use this exact reference to match the breaker to Siemens panels and approved replacement programs.\u003c\/p\u003e \u003ch3\u003eIdeal use scenarios\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eIndustrial manufacturing lines powered by 480V three-phase distribution\u003c\/li\u003e \u003cli\u003eCommercial facilities upgrading service disconnections or control panels\u003c\/li\u003e \u003cli\u003eRetrofits in legacy Siemens panels where 125A, 3-pole protection is required\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eInstallation guidance and safety considerations\u003c\/h3\u003e\n\u003cp\u003eEnsure the power is fully de-energized and follow standard electrical codes during installation. Verify that the panel labeling supports 3-pole breakers at 480V and that the intended interrupting rating aligns with protection goals for your load. Proper mounting and secure termination are essential for reliable operation.\u003c\/p\u003e \u003ch3\u003eWhy choose Siemens EH3A125\u003c\/h3\u003e\n\u003cp\u003eSiemens brings decades of electrical distribution experience to this breaker, offering consistent performance, clear trip characteristics, and long-term reliability in busy facilities. By selecting the EH3A125, you align with a trusted standard for protecting three-phase 480V systems, helping minimize downtime and extend the life of your distribution network.\u003c\/p\u003e \u003cp\u003eBottom line: For precise, repeatable protection in 480V three-phase environments, the Siemens EH3A125 3-Pole 125A circuit breaker is a smart, specification-aligned choice. Use the exact part number to verify compatibility, and rely on Siemens’ established reliability to keep your electrical system safe and available.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Siemens","offers":[{"title":"Default Title","offer_id":46427504083106,"sku":"EH3A125","price":510.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0666\/8094\/6850\/files\/siemens-eh3a125-circuit-breaker-125a-3-pole-480v-103.webp?v=1789733263","url":"https:\/\/www.ampstate.com\/products\/siemens-eh3a125-circuit-breaker","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}