{"product_id":"siemens-ed42b125l-125a-480v-2-pole-circuit-breaker","title":"Siemens ED42B125L - 125 A, 480 V, 2-Pole Circuit Breaker | AmpState","description":"\u003cdiv\u003e\n\u003cp\u003eThe Siemens \u003cstrong\u003eED42B125L\u003c\/strong\u003e is a 2-pole molded case circuit breaker engineered for reliable branch circuit protection in panelboards and loadcenters. At 125A and 480V, it delivers robust protection for both everyday circuits and higher-demand installations, all while preserving valuable panel space with its compact molded-case design.\u003c\/p\u003e \u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eThermal-magnetic trip unit\u003c\/strong\u003e provides stable, repeatable protection by responding to both overcurrent and short-circuit conditions, helping prevent nuisance trips and equipment damage.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eSpace-efficient, molded-case design\u003c\/strong\u003e maximizes panel capacity, making it ideal for crowded electrical enclosures or retrofit projects where every inch matters.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003e OEM-compatible\u003c\/strong\u003e—paired with matching Siemens OEM loadcenters and panelboards for seamless compatibility, easier upgrades, and reliable performance.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eVersatile protection for multiple sectors\u003c\/strong\u003e—suitable for residential, commercial, and light industrial applications where dependable circuit protection is essential.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eDesigned to guard two hot conductors, the ED42B125L delivers effective \u003cem\u003ebranch circuit overcurrent\u003c\/em\u003e and \u003cem\u003eshort-circuit protection\u003c\/em\u003e at the voltages your equipment requires. Its 125A rating makes it a practical choice for feeders, subpanes, or circuits that demand solid protection without oversized components.\u003c\/p\u003e \u003cp\u003eKey specifications at a glance:\u003c\/p\u003e \u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eManufacturer:\u003c\/strong\u003e Siemens\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003ePart Number:\u003c\/strong\u003e ED42B125L\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 125A\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eVoltage Rating:\u003c\/strong\u003e 480V\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eNumber of Poles:\u003c\/strong\u003e 2\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 \u003cp\u003eWho should consider the ED42B125L? electricians and facilities managers tackling panel upgrades, new commercial installations, or residential projects where space is tight but protection must be rock solid. If you’re replacing an aging breaker or expanding a panel, this unit’s compatibility with Siemens OEM loadcenters helps you maintain consistent performance and a clean, code-compliant setup.\u003c\/p\u003e \u003cp\u003ePractical tips for optimal results:\u003c\/p\u003e \u003cul\u003e \u003cli\u003eVerify that your panelboard or loadcenter is compatible with the ED42B125L’s 2-pole, 125A, 480V profile before purchase.\u003c\/li\u003e \u003cli\u003eFollow standard electrical practices for mounting and wiring inside the enclosure to ensure proper clearance and ventilation for reliable operation.\u003c\/li\u003e \u003cli\u003ePair with the appropriate Siemens accessories and fitments to maintain system integrity and simplify future maintenance.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eIn short, the \u003cstrong\u003eSiemens ED42B125L\u003c\/strong\u003e provides precise, durable protection where it’s needed most—two-pole coverage for two hot lines, compatible with Siemens OEM panels, and a design focused on space efficiency and long-term reliability. It’s a smart, practical choice for ensuring electrical safety and consistent performance across residential, commercial, and light industrial environments.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Amp State","offers":[{"title":"Default Title","offer_id":46349789266082,"sku":null,"price":710.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0666\/8094\/6850\/files\/siemens-ed42b125l-125-a-480-v-2-pole-circuit-breaker-ampstate-833.webp?v=1788727530","url":"https:\/\/www.ampstate.com\/products\/siemens-ed42b125l-125a-480v-2-pole-circuit-breaker","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}