{"product_id":"square-d-ejb34125-125a-480v-3-pole-bolt-on-circuit-breaker","title":"Square D EJB34125 - 125 A, 480 V, 3-Pole Bolt-On Circuit Breaker | AmpState","description":"\u003cdiv\u003e\n\u003cp\u003eThe Square D EJB34125 is a rugged 125 A, 480 V, 3-pole bolt-on molded case circuit breaker designed to protect your panelboards and loadcenters with reliable, predictable performance. Built for demanding commercial and light industrial environments, this unit delivers dependable branch circuit overcurrent and short-circuit protection where it matters most.\u003c\/p\u003e \u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eSecure bolt-on mounting\u003c\/strong\u003e provides a rigid, vibration-resistant bus connection, reducing wear and ensuring consistent electrical contact in busy electrical rooms and equipment closets.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eThermal-magnetic trip unit\u003c\/strong\u003e combines thermal overload protection with magnetic short-circuit protection for fast, stable responses and repeatable protection curves across varying temperatures and loads.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003e3-pole, 480 V design\u003c\/strong\u003e is ideal for three-phase power distribution, safeguarding feeders and branch circuits in commercial and light industrial applications.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eOEM-compatible\u003c\/strong\u003e construction ensures reliable fit with matching loadcenters and panelboards, simplifying retrofits and coordinated protection across panels.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eVersatile for multiple settings\u003c\/strong\u003e—well suited for commercial lighting and HVAC panels, data center feeders, and other three-phase circuits that demand sturdy, long-lasting protection.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eTechnical details\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eManufacturer:\u003c\/strong\u003e Square D\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003ePart Number:\u003c\/strong\u003e EJB34125\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e Thermal-magnetic molded case circuit breaker\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eAmperage Rating:\u003c\/strong\u003e 125 A\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eVoltage Rating:\u003c\/strong\u003e 480 V\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eNumber of Poles:\u003c\/strong\u003e 3\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eMounting Style:\u003c\/strong\u003e Bolt-on\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eApplication:\u003c\/strong\u003e Branch circuit overcurrent and short-circuit protection\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eWho benefits from the Square D EJB34125\u003c\/h3\u003e\n\u003cp\u003eElectricians, facilities managers, and electrical engineers who specification-search for durable, panel-ready protection will appreciate the combination of secure mounting, precise thermal-magnetic protection, and OEM compatibility. If you’re upgrading an existing panel or designing a new three-phase system, this breaker provides a trusted, industry-standard solution that aligns with typical commercial and light industrial electrical practices.\u003c\/p\u003e \u003ch3\u003ePractical tips and use cases\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eUse in panelboards and loadcenters where a robust 3-pole protection device is required for 480 V three-phase circuits.\u003c\/li\u003e \u003cli\u003ePair with compatible Square D OEM panels to ensure seamless integration and protection coordination across the entire distribution system.\u003c\/li\u003e \u003cli\u003eInstall in environments with moderate vibration or where secure bus connections are critical to long-term reliability.\u003c\/li\u003e \u003cli\u003eIdeal for protecting feeders feeding motors, HVAC systems, lighting bus sections, and other critical three-phase loads.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"Amp State","offers":[{"title":"Default Title","offer_id":46355213320354,"sku":null,"price":710.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0666\/8094\/6850\/files\/schnieder_and_square_d_breaker_and_panel_03210034-4c8a-41a9-aff2-26e5069ff0e1.png?v=1764690401","url":"https:\/\/www.ampstate.com\/products\/square-d-ejb34125-125a-480v-3-pole-bolt-on-circuit-breaker","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}