{"product_id":"siemens-cfd63b250-250a-600v-3-pole-bolt-on-circuit-breaker","title":"Siemens CFD63B250 - 250 A, 600 V, 3-Pole Bolt-On Circuit Breaker | AmpState","description":"\u003cdiv\u003e\n\u003cp\u003eDependable, high-performance protection for demanding electrical systems starts with the Siemens CFD63B250. This 3-pole, 250A, 600V bolt-on molded case circuit breaker is engineered for rugged panelboards and loadcenters, delivering consistent overcurrent and short-circuit protection where it matters most—without compromising uptime.\u003c\/p\u003e \u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eSecure bolt-on mounting\u003c\/strong\u003e provides a rigid, vibration-resistant bus connection, keeping your circuits protected in environments with constant movement or vibration.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eThermal-magnetic trip unit\u003c\/strong\u003e delivers stable, repeatable protection by combining precise thermal overload sensing with fast magnetic action for short circuits—minimizing nuisance trips while responding quickly to dangerous faults.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eOEM-compatible design\u003c\/strong\u003e is built to pair with matching Siemens loadcenters and panelboards, ensuring coordinated protection and clean electrical coordination across your system.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eVersatile application\u003c\/strong\u003e suited for residential, commercial, and light industrial deployments, from service feeders to main branch protection in modern panel assemblies.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eWhat makes the CFD63B250 stand out\u003c\/h3\u003e\n\u003cp\u003eUnlike generic breakers, the CFD63B250 is purpose-built for Siemens panel ecosystems, delivering precise trip characteristics matched to the panel’s bus design. The bolt-on format not only secures a solid mechanical connection but also enhances electrical continuity in installations where vibration or periodic maintenance could loosen connections. With a 250A rating and 600V capacity, it handles substantial fault currents while maintaining predictable, safe operation under normal load conditions.\u003c\/p\u003e \u003ch3\u003eKey specifications at a glance\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eManufacturer: Siemens\u003c\/li\u003e \u003cli\u003ePart Number: CFD63B250\u003c\/li\u003e \u003cli\u003eType: Thermal-magnetic molded case circuit breaker\u003c\/li\u003e \u003cli\u003eAmperage Rating: 250 A\u003c\/li\u003e \u003cli\u003eVoltage Rating: 600 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\u003eIdeal use cases\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eUpgrading or expanding panelboards in commercial spaces where reliable disconnect and fault isolation are critical\u003c\/li\u003e \u003cli\u003eProtecting large feeders in light industrial settings with higher fault current potential\u003c\/li\u003e \u003cli\u003eResidential or mixed-use installations requiring robust, OEM-compatible protection within Siemens systems\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003ePractical installation and deployment tips\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eEnsure compatibility with your specific Siemens loadcenter or panelboard model to maintain coordinated protection and labeling accuracy.\u003c\/li\u003e \u003cli\u003eTorque the mounting bolts to the manufacturer’s specification to preserve the integrity of the bus connection and trip calibration.\u003c\/li\u003e \u003cli\u003eVerify that conductor sizing and ampacity align with the 250A rating, and ensure suitable short-circuit current rating is appropriate for the installation environment.\u003c\/li\u003e \u003cli\u003ePlan for easy serviceability by documenting the breaker location and keeping a spare CFD63B250 on hand for quick swaps during maintenance windows.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"Amp State","offers":[{"title":"Default Title","offer_id":46349779271842,"sku":null,"price":710.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0666\/8094\/6850\/files\/siemens-cfd63b250-250-a-600-v-3-pole-bolt-on-circuit-breaker-969.webp?v=1788723753","url":"https:\/\/www.ampstate.com\/products\/siemens-cfd63b250-250a-600v-3-pole-bolt-on-circuit-breaker","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}