{"product_id":"siemens-jxd23b350-350a-240v-3-pole-bolt-on-circuit-breaker","title":"Siemens JXD23B350 - 350 A, 240 V, 3-Pole Bolt-On Circuit Breaker | AmpState","description":"\u003cdiv\u003e\n\u003cp\u003e\u003cstrong\u003eSiemens JXD23B350\u003c\/strong\u003e is a high-capacity, 350A, 240V, 3-pole bolt-on molded case circuit breaker built to deliver dependable branch circuit overcurrent and short-circuit protection in panelboards and loadcenters. With a rugged bolt-on mounting design, it provides a secure, vibration-resistant bus connection that stays engaged under demanding electrical conditions.\u003c\/p\u003e \u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eSecure bolt-on mounting\u003c\/strong\u003e ensures a rigid, vibration-resistant bus connection for long-term reliability in challenging environments.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eThermal-magnetic trip unit\u003c\/strong\u003e delivers stable, repeatable protection by responding to both slow-rising and instantaneous faults, reducing nuisance trips while safeguarding equipment.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eOEM-compatible design\u003c\/strong\u003e pairs seamlessly with matching Siemens loadcenters and panelboards, supporting straightforward installation and reliable performance as a replacement or upgrade.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eVersatile, high-current protection\u003c\/strong\u003e suited for residential, commercial, and light industrial electrical systems that require robust 350A protection without sacrificing space or ease of maintenance.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eTechnical specifications\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eManufacturer: Siemens\u003c\/li\u003e \u003cli\u003ePart Number: JXD23B350\u003c\/li\u003e \u003cli\u003eType: Thermal-magnetic molded case circuit breaker\u003c\/li\u003e \u003cli\u003eAmperage Rating: 350 A\u003c\/li\u003e \u003cli\u003eVoltage Rating: 240 V\u003c\/li\u003e \u003cli\u003eNumber of Poles: 3\u003c\/li\u003e \u003cli\u003eMounting Style: Bolt-on\u003c\/li\u003e \u003cli\u003eApplication: Branch circuit overcurrent and short-circuit protection\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eWhy this breaker matters in your panel\u003c\/h3\u003e\n\u003cp\u003eWhen you’re protecting large-draw circuits in residential service panels, commercial distribution boards, or light industrial panels, the JXD23B350 provides a reliable line of defense against overloads and faults. The bolt-on connection minimizes loose contacts that can lead to heat buildup, while the thermal-magnetic trip mechanism adapts to changing load conditions to reduce nuisance trips without compromising safety.\u003c\/p\u003e \u003ch3\u003eIdeal use cases\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eUpgrading or replacing high-amperage branch breakers in load centers and panelboards that require a 350 A rating.\u003c\/li\u003e \u003cli\u003eNew installations in applications where space and dependable protection are priorities for large circuits (motors, feeders, or distribution branches).\u003c\/li\u003e \u003cli\u003eRetrofitting commercial or light-industrial panels that demand a rugged, OEM-compatible protective device.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003ePractical guidance and insights\u003c\/h3\u003e\n\u003cp\u003eChoose the Siemens JXD23B350 when you need a single, reliable solution for high-current protection that fits seamlessly with Siemens panel ecosystems. Its bolt-on design simplifies mounting in compatible enclosures, and the thermal-magnetic trip unit helps maintain consistent protection across varying electrical loads. For ongoing maintenance, pair this breaker with compatible Siemens OEM loadcenters to ensure optimum coordination and protective performance across downstream circuits.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Amp State","offers":[{"title":"Default Title","offer_id":46349815611554,"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_da798170-072a-40d6-862f-cf7e6432cf17.png?v=1764157646","url":"https:\/\/www.ampstate.com\/products\/siemens-jxd23b350-350a-240v-3-pole-bolt-on-circuit-breaker","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}