{"product_id":"siemens-jxd63b350-350a-600v-3-pole-bolt-on-circuit-breaker","title":"Siemens JXD63B350 - 350 A, 600 V, 3-Pole Bolt-On Circuit Breaker | AmpState","description":"\u003cdiv\u003e\n\u003cp\u003e\u003cstrong\u003eSiemens JXD63B350\u003c\/strong\u003e is a 350A, 600V, 3-pole bolt-on molded case circuit breaker designed to deliver dependable branch circuit overcurrent and short-circuit protection in panelboards and loadcenters. Available through AmpState, this device combines Siemens reliability with a mounting system engineered for long-term, vibration-resistant service in demanding electrical environments.\u003c\/p\u003e \u003cul\u003e \u003cli\u003e\u003cstrongbolt-on mounting\u003e provides a secure, rigid connection to the panel bus, reducing movement and ensuring consistent electrical contact even in equipment subject to vibration.\u003c\/strongbolt-on\u003e\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eThermal-magnetic trip unit\u003c\/strong\u003e delivers stable, repeatable protection by using a thermal element for overload conditions and a magnetic element for instantaneous short-circuit trips, helping to prevent nuisance trips and protect sensitive equipment.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eOEM panel compatibility\u003c\/strong\u003e is designed to align with matching Siemens loadcenter and panelboard architectures, enabling straightforward replacements or upgrades without sacrificing coordination or performance.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eThree-pole configuration\u003c\/strong\u003e supports three-phase circuits, making it ideal for commercial and light industrial applications where balanced, reliable power distribution is essential.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eHigh-current, high-voltage rating\u003c\/strong\u003e—350A at 600V—providing robust protection for main and feeder circuits in a variety of installations.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eThis molded case circuit breaker is specifically suited for residential service panel upgrades, commercial distribution panels, and light industrial equipment enclosures where secure mounting, precise protection, and OEM-panel compatibility matter most. The JXD63B350 helps you maintain safe, code-compliant operation across your electrical system, with protection that responds quickly to short circuits while smoothly handling normal load conditions.\u003c\/p\u003e \u003cp\u003e\u003cstrong\u003eTechnical snapshot\u003c\/strong\u003e: Manufacturer — Siemens; Part Number — JXD63B350; Type — Thermal-magnetic molded case circuit breaker; Amperage Rating — 350A; Voltage Rating — 600V; Number of Poles — 3; Mounting Style — Bolt-on; Application — Branch circuit overcurrent and short-circuit protection.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Amp State","offers":[{"title":"Default Title","offer_id":46349816332450,"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_cbdbe78f-305b-49ce-9f4b-0ab008eab929.png?v=1764157679","url":"https:\/\/www.ampstate.com\/products\/siemens-jxd63b350-350a-600v-3-pole-bolt-on-circuit-breaker","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}