{"product_id":"siemens-jxd63b400hl-400a-600v-3-pole-circuit-breaker","title":"Siemens JXD63B400HL - 400 A, 600 V, 3-Pole Circuit Breaker | AmpState","description":"\u003cdiv\u003e\n\u003cp\u003eIntroducing the Siemens JXD63B400HL, a high-capacity 400A, 600V, 3-pole molded case circuit breaker designed to protect branch circuits with precision and reliability. Built for panelboards and load centers, it delivers dependable overcurrent and short-circuit protection across residential, commercial, and light industrial applications.\u003c\/p\u003e \u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eCompact molded case design\u003c\/strong\u003e maximizes panel space, allowing cleaner, more organized electrical distributions in both new installations and upgrades.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eThermal-magnetic trip unit\u003c\/strong\u003e provides stable, repeatable protection by responding to long-term overcurrents and instantly interrupting severe short circuits, reducing mis-trips and equipment damage.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003e3-pole configuration\u003c\/strong\u003e ensures synchronized protection for three-phase systems, helping maintain balance and prevent nuisance trips in multi-wire loads.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eOEM loadcenter compatibility\u003c\/strong\u003e designed to pair with matching Siemens OEM loadcenters and panelboards for straightforward installation and reliable performance.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eVersatile用途\u003c\/strong\u003e suitable for residential, commercial, and light industrial environments where robust feeder protection is essential.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003e\u003cstrong\u003eTechnical snapshot\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e \u003cli\u003eAmperage rating: 400 A\u003c\/li\u003e \u003cli\u003eVoltage rating: 600 V\u003c\/li\u003e \u003cli\u003eNumber of poles: 3\u003c\/li\u003e \u003cli\u003eType: Thermal-magnetic molded case circuit breaker\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eWhy this breaker matters in your electrical system\u003c\/p\u003e\n\u003cul\u003e \u003cli\u003eWhen protecting large feeder circuits or service entrances, the JXD63B400HL provides rapid magnetic trip for short-circuit events while offering stable, predictable behavior under normal load conditions.\u003c\/li\u003e \u003cli\u003eIts compact, molded-case construction helps maximize panel capacity without compromising protection, making it a practical choice for panel refreshes or new builds where space is at a premium.\u003c\/li\u003e \u003cli\u003eOEM compatibility minimizes installation troubleshooting and ensures the protection scheme remains consistent with your existing Siemens panel infrastructure.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003e\u003cstrong\u003eIdeal use scenarios\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e \u003cli\u003eFeeder protection for commercial distribution panels serving lighting, outlets, and essential equipment\u003c\/li\u003e \u003cli\u003ePrimary protection in 3-phase service panels within light industrial facilities\u003c\/li\u003e \u003cli\u003eUpgrade candidate in residential-commercial multi-tenant buildings requiring robust 400 A protection\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eWith the Siemens JXD63B400HL, you’re choosing a trusted, purpose-built solution that blends space efficiency, precise protection, and seamless integration—backed by Siemens engineering designed to keep your electrical system safer and more reliable over the long run.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Amp State","offers":[{"title":"Default Title","offer_id":46349817938082,"sku":null,"price":710.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0666\/8094\/6850\/files\/siemens_breaker_and_panel_c7aebbbf-a527-4c64-a2fb-1f24f87ef6b9.png?v=1764157689","url":"https:\/\/www.ampstate.com\/products\/siemens-jxd63b400hl-400a-600v-3-pole-circuit-breaker","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}