{"product_id":"siemens-jd63b400l-400a-600v-3-pole-bolt-on-circuit-breaker","title":"Siemens JD63B400L - 400 A, 600 V, 3-Pole Bolt-On Circuit Breaker | AmpState","description":"\u003cdiv\u003e\n\u003cp\u003eSiemens JD63B400L is a robust 400A, 600V, 3-pole bolt-on molded case circuit breaker engineered to shield panelboards and load centers from overcurrent and short-circuit events. Built for dependable performance in demanding environments, this unit delivers reliable protection with a design that resists vibration and maintains a solid electrical connection.\u003c\/p\u003e \u003ch3\u003eKey advantages\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eSecure bolt-on mounting\u003c\/strong\u003e provides a rigid, vibration-resistant bus connection that stays tight through operational movement.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eThermal-magnetic trip unit\u003c\/strong\u003e delivers stable, repeatable protection by combining thermal and magnetic sensing to respond to both gradual overloads and fast short-circuit faults.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eOEM-compatible integration\u003c\/strong\u003e is designed to work with matching Siemens OEM load centers and panelboards, simplifying installation and reducing compatibility concerns.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eVersatile for multiple sectors\u003c\/strong\u003e suitable for residential, commercial, and light industrial applications where dependable branch-circuit protection matters.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eTechnical details at a glance\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eAmperage rating:\u003c\/strong\u003e 400A\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eVoltage rating:\u003c\/strong\u003e 600V\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eNumber of poles:\u003c\/strong\u003e 3\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eMounting style:\u003c\/strong\u003e Bolt-on\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e Thermal-magnetic molded case circuit breaker\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eApplication:\u003c\/strong\u003e Branch circuit overcurrent and short-circuit protection\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eUse cases and practical benefits\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eIdeal for panelboard or loadcenter upgrades where high-current branch circuits require reliable protection and a secure mounting method.\u003c\/li\u003e \u003cli\u003eSuitable for three-phase distribution in commercial or light industrial settings, providing coordinated protection for critical feeders.\u003c\/li\u003e \u003cli\u003eSupports installations that demand durable operation in environments with vibration or frequent equipment cycling, thanks to its solid bolt-on connection.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eInstallation and compatibility considerations\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eChoose the JD63B400L when your system calls for Siemens-compatible protection in OEM panels to ensure smooth integration and consistent performance.\u003c\/li\u003e \u003cli\u003eFollow standard electrical installation practices for bolt-on molded case breakers and refer to the panelboard manufacturer’s guidelines for torque and mounting procedures to maintain optimal contact and protection.\u003c\/li\u003e \u003cli\u003eUse in applications where a single, clear protection point for a substantial feeder is desired, helping to simplify maintenance and fault isolation.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eWhen reliability and precision matter for protective relays and distribution, the Siemens JD63B400L delivers the dependability you need in a 400A, 600V, 3-pole package. It’s the solid choice for safeguarding your panelboards and maintaining steady power in demanding residential, commercial, and light industrial projects.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Amp State","offers":[{"title":"Default Title","offer_id":46349814595746,"sku":null,"price":710.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0666\/8094\/6850\/files\/siemens-jd63b400l-400-a-600-v-3-pole-bolt-on-circuit-breaker-790.webp?v=1788732501","url":"https:\/\/www.ampstate.com\/products\/siemens-jd63b400l-400a-600v-3-pole-bolt-on-circuit-breaker","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}