{"product_id":"siemens-ef3s150-circuit-breaker","title":"Siemens | EF3S150 | Circuit Breaker | 3-Pole","description":"\u003cdiv\u003e\n\u003cp\u003eSiemens EF3S150 is a 3-Pole Circuit Breaker designed for precise replacement in three-phase installations. This unit serves maintenance, retrofit, and replacement projects where exact Siemens specifications are required. With the part number EF3S150, it’s the go-to choice when compatibility is critical.\u003c\/p\u003e \u003ch3\u003eKey compatibility and fit\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cstrong\u003ePoles:\u003c\/strong\u003e 3-Pole, delivering three-phase protection for commercial or industrial electrical systems.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003ePart number reference:\u003c\/strong\u003e EF3S150 — the most reliable identifier for matching your existing equipment.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eImportant guideline:\u003c\/strong\u003e Confirm fit and ratings before ordering—the part number is the best reference for compatibility.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eIdeal use cases\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eReplacement in Siemens panels where a 3-Pole EF3S150 format is required due to prior service life or fault.\u003c\/li\u003e \u003cli\u003eMaintenance or retrofit projects that demand exact Siemens specifications to ensure consistent trip behavior and electrical protection.\u003c\/li\u003e \u003cli\u003eNew installations in three-phase circuits that align with SIEMENS EF3S150 specifications for seamless integration.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eWhy this 3-Pole breaker stands out\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eDirect reference for compatibility: Use the EF3S150 part number to verify fit in your existing system, reducing guesswork and returns.\u003c\/li\u003e \u003cli\u003eThree-phase protection designed for reliability in demanding environments—industrial equipment, commercial HVAC, and other three-phase loads benefit from this configuration.\u003c\/li\u003e \u003cli\u003eMaintenance-ready and replaceable within compatible Siemens panels, helping you minimize downtime during service windows.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003e\u003cstrong\u003ePractical guidance\u003c\/strong\u003e: Keep the EF3S150 on hand as a designated replacement part for Siemens three-phase panels. When replacing, ensure that power is fully shut off and follow standard safety and torque practices to preserve protective performance.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Siemens","offers":[{"title":"Default Title","offer_id":46427522597026,"sku":"EF3S150","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-ef3s150-circuit-breaker","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}