{"product_id":"siemens-jxd23m300-circuit-breaker","title":"Siemens | JXD23M300 | Circuit Breaker | 300A | 3-Pole | 240V","description":"\u003cdiv\u003e\n\u003cp\u003eIntroducing the Siemens JXD23M300 Circuit Breaker — a purpose-built protection device engineered for demanding, three-phase 240V systems. With a robust 300A rating and 3-pole configuration, this breaker is designed to safeguard large feeders, motors, and critical loads in commercial and industrial environments.\u003c\/p\u003e \u003cp\u003eThis unit is optimized for maintenance, retrofit, and replacement projects where exact specifications matter. The JXD23M300 ensures compatibility when upgrading or refreshing a panel’s protection scheme, delivering dependable interruption performance when it matters most.\u003c\/p\u003e \u003ch3\u003eKey specifications at a glance\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eAmperage:\u003c\/strong\u003e 300A\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003ePoles:\u003c\/strong\u003e 3-Pole\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eVoltage:\u003c\/strong\u003e 240V\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003ePart number:\u003c\/strong\u003e JXD23M300 — the best reference for compatibility\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eWhy this Siemens 3-pole, 240V breaker stands out\u003c\/h3\u003e\n\u003cp\u003eSiemens engineering delivers precise, predictable protection for three-phase circuits. The JXD23M300 is designed to minimize nuisance trips while reliably interrupting fault currents. Its 300A capacity is well-suited for feeders to large motors, HVAC equipment, transformers, and other high-load components, helping protect conductors and downstream devices without compromising system uptime.\u003c\/p\u003e \u003ch3\u003eIdeal use cases\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eMaintenance and retrofit projects where exact 300A, 3-pole, 240V protection is required\u003c\/li\u003e \u003cli\u003eReplacement in legacy panels that specify JXD23M300-compatible breakers\u003c\/li\u003e \u003cli\u003eUpgrading protection schemes in commercial buildings, data centers, and light industrial facilities\u003c\/li\u003e \u003cli\u003eSpare-part inventory for planned maintenance to minimize downtime\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eInstallation and compatibility considerations\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eAlways confirm fit and ratings before ordering — the part number JXD23M300 is the most reliable reference for compatibility.\u003c\/li\u003e \u003cli\u003eMatch amperage, voltage, and pole configuration to your panel’s specifications to ensure proper protection and seating.\u003c\/li\u003e \u003cli\u003eVerify bus-bar interface and mounting style align with your existing distribution panel to avoid fit issues during replacement.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eWhether you’re retrofitting a legacy system, replacing a worn-out breaker, or building out a new protection strategy, the Siemens JXD23M300 delivers dependable performance and clear, actionable compatibility guidance. Add this essential 300A, 3-pole, 240V circuit breaker to your cart and ensure robust protection for your critical electrical loads.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Siemens","offers":[{"title":"Default Title","offer_id":46427066335394,"sku":"JXD23M300","price":510.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0666\/8094\/6850\/files\/master_generic_a0994f42-7fad-49d1-911a-c2784022b8c9.png?v=1765492979","url":"https:\/\/www.ampstate.com\/products\/siemens-jxd23m300-circuit-breaker","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}