{"product_id":"siemens-hjg3f400-circuit-breaker","title":"Siemens | HJG3F400 | Circuit Breaker | 400A | 3-Pole | 600V","description":"\u003cdiv\u003e\n\u003cp\u003eMeet the Siemens \u003cstrong\u003eHJG3F400 Circuit Breaker\u003c\/strong\u003e, a robust protection device rated for 400 A across a 3-pole configuration at 600 V. Built for maintenance, retrofit, and replacement projects where exact specifications matter, this breaker drops into compatible Siemens panels with minimal fuss and maximum reliability.\u003c\/p\u003e \u003ch2\u003eKey specifications\u003c\/h2\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eAmperage:\u003c\/strong\u003e 400 A\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003ePoles:\u003c\/strong\u003e 3-Pole\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eVoltage:\u003c\/strong\u003e 600 V\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch2\u003eWhat makes this breaker the right choice\u003c\/h2\u003e\n\u003cp\u003eDesigned to help you keep electrical systems safe and up to code, the HJG3F400 delivers balanced protection across all conductors. The three-pole design ensures synchronized disconnection across phases, reducing the risk of arc faults and equipment damage during fault events. It’s an ideal replacement where you already have a matching HJG3F400 reference or where your panel labeling specifies this exact part number.\u003c\/p\u003e \u003ch3\u003eUse cases and installation scenarios\u003c\/h3\u003e\n\u003cp\u003e- Maintenance: Replace aging or worn breakers to restore panel integrity and trip performance.\u003c\/p\u003e\n\u003cp\u003e- Retrofit: Upgrade legacy gear to meet current protection standards while preserving existing wiring and bus connections.\u003c\/p\u003e\n\u003cp\u003e- Replacement: Quick swap-in for panels that specify HJG3F400 as the compatible breaker, avoiding compatibility pitfalls.\u003c\/p\u003e \u003ch3\u003eHow to confirm compatibility\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eMatch the part number: HJG3F400 is the definitive reference for compatibility.\u003c\/li\u003e \u003cli\u003eVerify system voltage: 600 V rating aligns with your equipment’s requirements.\u003c\/li\u003e \u003cli\u003eEnsure amperage and pole count: 400 A, 3-Pole match your load and bus configuration.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch2\u003eIdeal for professionals who demand reliability\u003c\/h2\u003e\n\u003cp\u003eElectrical technicians, facilities managers, and maintenance engineers working in industrial, commercial, or large-residence settings will appreciate the straightforward fit and the decisive protection this Siemens breaker delivers. When downtime is costly and safety is non-negotiable, choosing the right replacement part matters—and the HJG3F400 delivers alignment with Siemens specifications and panel documentation.\u003c\/p\u003e \u003cp\u003e\u003cstrong\u003eNotes:\u003c\/strong\u003e Always confirm fit and ratings before ordering. The part number is the best reference for compatibility, and using a matching 3-pole, 600 V, 400 A device helps ensure a smooth replacement experience.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Siemens","offers":[{"title":"Default Title","offer_id":46427545632930,"sku":"HJG3F400","price":34795.0,"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-hjg3f400-circuit-breaker","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}