{"product_id":"siemens-hhld63b400l-circuit-breaker","title":"Siemens | HHLD63B400L | Circuit Breaker | 400A | 3-Pole | 600V","description":"\u003cdiv\u003e\n\u003cp\u003eSiemens HHLD63B400L circuit breaker delivers rugged, high-capacity protection for demanding electrical installations. With a 400A rating and three poles for balanced three-phase protection, this unit is designed for 600V systems, making it a solid fit for service panels, switchgear, and industrial feeders where reliable interruption protection is essential.\u003c\/p\u003e \u003cp\u003e\u003cstrong\u003eKey specifications\u003c\/strong\u003e\u003c\/p\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 rating:\u003c\/strong\u003e 600 V\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003ePart number:\u003c\/strong\u003e HHLD63B400L\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003e\u003cstrong\u003eWhy choose the HHLD63B400L\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e \u003cli\u003eDesigned for maintenance, retrofit, and replacement tasks where exact specifications matter — this is the precise part you need to preserve system performance.\u003c\/li\u003e \u003cli\u003eThree-pole configuration ensures balanced protection across all three phases, reducing the risk of uneven load and potential equipment damage.\u003c\/li\u003e \u003cli\u003eCompatibility guidance centers on the part number; use HHLD63B400L as the primary reference to confirm fit with existing Siemens equipment.\u003c\/li\u003e \u003cli\u003eOperates in 600V systems, supporting industrial and commercial electrical distributions with reliable interrupting capacity.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003e\u003cstrong\u003eCommon use cases\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e \u003cli\u003eReplacement in service panels and distribution boards where Siemens equipment is specified\u003c\/li\u003e \u003cli\u003eRetrofit upgrades to restore or upgrade protection in aging electrical infrastructure\u003c\/li\u003e \u003cli\u003eNew installs requiring proven Siemens protection with a 400A, 3-pole, 600V rating\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003e\u003cstrong\u003ePractical notes\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e \u003cli\u003eAlways confirm fit and ratings before ordering. The part number is the most reliable reference for compatibility with your equipment.\u003c\/li\u003e \u003cli\u003eFollow proper torque and installation procedures per your electrical codes and Siemens guidelines.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"Siemens","offers":[{"title":"Default Title","offer_id":46427486388386,"sku":"HHLD63B400L","price":7766.0,"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-hhld63b400l-circuit-breaker","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}