{"product_id":"siemens-jxd23b400-400a-240v-3-pole-bolt-on-circuit-breaker","title":"Siemens JXD23B400 - 400 A, 240 V, 3-Pole Bolt-On Circuit Breaker | AmpState","description":"\u003cdiv\u003e\n\u003cp\u003eMeet the Siemens JXD23B400—a rugged, 3-pole molded case circuit breaker designed to deliver dependable branch circuit overcurrent and short-circuit protection in panelboards and loadcenters. Built to handle higher-current applications, this bolt-on unit pairs robust construction with precise, repeatable trip performance for peace of mind in demanding environments.\u003c\/p\u003e \u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eSecure bolt-on mounting\u003c\/strong\u003e: A rigid connection to the bus minimizes vibration and maintains uninterrupted contact, even in panels subjected to movement or vibration.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eThermal-magnetic trip unit\u003c\/strong\u003e: Combines steady thermal protection with fast magnetic trip for instantaneous response to short circuits, reducing the risk of damage to downstream equipment.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eHigh-current capability\u003c\/strong\u003e: 400A current rating at 240V makes this breaker ideal for main feeders or high-demand branch circuits in commercial and light industrial settings.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003e3-pole design\u003c\/strong\u003e: Suitable for three-phase systems, ensuring balanced protection across all phases in a panelboard or loadcenter.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eOEM compatibility\u003c\/strong\u003e: Specifically designed to work with matching Siemens OEM load centers and panelboards for seamless integration and reliable performance.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eVersatile applications\u003c\/strong\u003e: Ideal for residential-commercial-light industrial installations where robust, long-term protection is essential.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eThe Siemens JXD23B400 is a practical solution for safeguarding critical electrical infrastructure against overcurrent and short circuits. Its bolt-on format provides a secure, vibration-resistant connection to the bus, while the thermal-magnetic trip unit delivers stable, repeatable protection—so you can rely on consistent performance day after day. Whether upgrading an existing Siemens panelboard or outfitting a new installation, this 400A, 240V, 3-pole breaker ensures compliant, dependable protection for high-demand circuits.\u003c\/p\u003e \u003cp\u003e\u003cstrong\u003eKey specifications at a glance\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e \u003cli\u003eManufacturer: Siemens\u003c\/li\u003e \u003cli\u003ePart Number: JXD23B400\u003c\/li\u003e \u003cli\u003eType: Thermal-magnetic molded case circuit breaker (MCCB)\u003c\/li\u003e \u003cli\u003eAmperage Rating: 400A\u003c\/li\u003e \u003cli\u003eVoltage Rating: 240V\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 \u003cp\u003eWhether you’re stocking a new panel installation, performing a panel upgrade, or replacing a worn-out breaker in a Siemens-compatible system, the JXD23B400 delivers the reliable protection you expect—with the durability to handle the demands of today’s electrical installs.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Amp State","offers":[{"title":"Default Title","offer_id":46349815677090,"sku":null,"price":710.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0666\/8094\/6850\/files\/siemens-jxd23b400-400-a-240-v-3-pole-bolt-on-circuit-breaker-826.webp?v=1788732902","url":"https:\/\/www.ampstate.com\/products\/siemens-jxd23b400-400a-240v-3-pole-bolt-on-circuit-breaker","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}