{"product_id":"siemens-hjd63f400-jd-frame-circuit-breaker-400a-3p","title":"Siemens HJD63F400 Jd Frame Circuit Breaker 400A 3P","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe SIEMENS HJD63F400 is a molded case circuit breaker in the JD frame series, rated for 3-pole, 400-amp service at 600 volts AC. It provides overcurrent and short-circuit protection in commercial and industrial power distribution systems. The HJD63F400 is designed for installation in panelboards, switchboards, and motor control centers where high-capacity branch or feeder circuit protection is required. Licensed electricians and electrical contractors handle installation. The breaker's molded case construction houses the thermal-magnetic trip mechanism, delivering reliable fault interruption in demanding environments.\u003c\/p\u003e\u003cp\u003eThis breaker is suited for commercial and industrial applications requiring 3-pole, 400-amp feeder or branch circuit protection at up to 600 volts AC. Typical installation scenarios include main distribution panels, feeder circuits to large HVAC equipment, motor branch circuits, and industrial control panels. It is commonly specified in new construction and retrofit projects where the JD frame form factor is required by the existing equipment or switchgear lineup.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e400-amp continuous current rating for high-capacity circuit protection\u003c\/li\u003e\n\u003cli\u003e3-pole configuration for three-phase power distribution applications\u003c\/li\u003e\n\u003cli\u003e600-volt AC rating suitable for commercial and industrial systems\u003c\/li\u003e\n\u003cli\u003eJD frame molded case construction with integrated thermal-magnetic trip mechanism\u003c\/li\u003e\n\u003cli\u003eDesigned for feeder and branch circuit protection in panelboards and switchboards\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned as an OEM-style replacement or direct-fit breaker for commercial and industrial panelboards and switchboards that accept JD frame molded case circuit breakers.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eInstallation must be performed by a licensed electrician in accordance with the National Electrical Code (NEC) and all applicable local codes. De-energize the panel and verify absence of voltage with a calibrated meter before handling or installing the breaker. Ensure the bus and mounting hardware in the enclosure are rated to accept a JD frame breaker at 400 amps. Do not attempt to field-modify the trip mechanism or use the breaker beyond its rated voltage and amperage.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eAmperage Rating\u003c\/strong\u003e: 400 amps\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNumber of Poles\u003c\/strong\u003e: 3\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVoltage Rating\u003c\/strong\u003e: 600 volts AC\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFrame Series\u003c\/strong\u003e: JD\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBreaker Type\u003c\/strong\u003e: Molded Case Circuit Breaker\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 15.801 pounds\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eStandard Information\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand\u003c\/strong\u003e: SIEMENS\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: HJD63F400\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"SIEMENS","offers":[{"title":"Default Title","offer_id":51383742890290,"sku":"HJD63F400","price":13617.61,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/312678716.jpg?v=1782606051","url":"https:\/\/voomisupply.com\/products\/siemens-hjd63f400-jd-frame-circuit-breaker-400a-3p","provider":"Voomi Supply","version":"1.0","type":"link"}