{"product_id":"siemens-hgb3k125b-circuit-breaker","title":"Siemens | HGB3K125B | Circuit Breaker | 125A | 3-Pole | 600V","description":"\u003cdiv\u003e\n\u003cp\u003eMeet the Siemens HGB3K125B circuit breaker—a sturdy, 125 A, 3-pole unit designed for 600 V three-phase systems. Built for maintenance, retrofit, and replacement projects, this breaker is precisely the component you need when your panel demands exact specifications and reliable protection.\u003c\/p\u003e \u003cp\u003eKey specifications at a glance:\u003c\/p\u003e\n\u003cul\u003e \u003cli\u003eAmperage: 125 A\u003c\/li\u003e \u003cli\u003ePoles: 3-Pole\u003c\/li\u003e \u003cli\u003eVoltage: 600 V\u003c\/li\u003e \u003cli\u003ePart number: HGB3K125B\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eWhy this Siemens breaker stands out\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eTailored for three-phase distribution, enabling clean, balanced protection across all three legs in commercial or industrial panels.\u003c\/li\u003e \u003cli\u003eSpec-aligned design makes it an ideal replacement or retrofit when upgrading or restoring system reliability without overhauling the entire panel.\u003c\/li\u003e \u003cli\u003ePart number is the best reference for compatibility—use it as your primary check to ensure the 125 A, 3-Pole, 600 V ratings align with your existing setup.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eUse cases and practical scenarios\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eFacility maintenance: swap in a reliable Siemens breaker that matches the existing amperage and voltage requirements to minimize downtime.\u003c\/li\u003e \u003cli\u003eRetrofit projects: upgrade older panels to a current, field-proven 125 A, 3-Pole, 600 V solution that fits standard Siemens enclosures.\u003c\/li\u003e \u003cli\u003eReplacement needs: replace worn or worn-out components with a direct-match part number to maintain system protection and performance.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eOrdering guidance\u003c\/h3\u003e\n\u003cp\u003eBefore you order, verify fit and ratings against your panel labeling. The HGB3K125B is the best reference for compatibility, ensuring you get a seamless, safe, and code-compliant installation.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Siemens","offers":[{"title":"Default Title","offer_id":46427545141410,"sku":"HGB3K125B","price":7026.0,"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-hgb3k125b-circuit-breaker","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}