{"product_id":"siemens-ckl3b300-circuit-breaker","title":"Siemens | CKL3B300 | Circuit Breaker | 300A | 3-Pole | 600V","description":"\u003cdiv\u003e\n\u003cp\u003eSiemens CKL3B300 is a rugged, three-pole circuit breaker engineered for serious industrial power distribution. With a 300A rating across three phases and a 600V maximum operating limit, this unit delivers dependable protection for demanding equipment and busy panels—from new installations to retrofit and replacement scenarios.\u003c\/p\u003e \u003ch3\u003eKey advantages of the CKL3B300\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eThree-pole protection\u003c\/strong\u003e ensures balanced interruption across all phases in 3‑phase systems, reducing the risk of phase imbalance and equipment damage.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003e300A current rating\u003c\/strong\u003e supports high-demand feeders and motor loads often found in manufacturing, processing, and facilities infrastructure.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003e600V voltage capability\u003c\/strong\u003e covers a wide range of industrial power networks, providing a safe margin for surges and transients typical in commercial environments.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eCompatibility-centric design\u003c\/strong\u003e built for retrofit and replacement projects; the CKL3B300 part number is the best reference to confirm fit with your Siemens-based installations.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eMaintenance-friendly and upgrade-ready\u003c\/strong\u003e ideal for panels undergoing modernization, enabling reliable protection without wholesale panel replacement.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eIdeal use cases\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eMain distribution panels in factories and processing facilities requiring solid 3-phase protection at 600V.\u003c\/li\u003e \u003cli\u003eRetrofit projects where existing switchgear calls for a Siemens-compatible, 3-pole, 300A breaker.\u003c\/li\u003e \u003cli\u003eReplacement and maintenance swaps to minimize downtime while maintaining system protection standards.\u003c\/li\u003e \u003cli\u003eMotor control centers and energy-intensive equipment feeds that demand stable, coordinated interruption across all phases.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eWhy it solves real-world problems\u003c\/h3\u003e\n\u003cp\u003eIn environments where power demands fluctuate and downtime is costly, the CKL3B300 provides a reliable, compatible pathway to restore protection quickly. By aligning with the CKL3B300 part number, technicians can avoid mismatches that lead to fit issues or suboptimal performance, streamlining procurement and installation in Siemens-backed systems.\u003c\/p\u003e \u003ch3\u003ePractical guidance for selection and installation\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eAlways \u003cstrong\u003econfirm fit and ratings\u003c\/strong\u003e before ordering. The CKL3B300 is the reference point for compatibility with Siemens panels and accessories.\u003c\/li\u003e \u003cli\u003eUse in \u003cstrong\u003ethree-phase power distributions\u003c\/strong\u003e where simultaneous interruption of all phases is required for safe shutdowns.\u003c\/li\u003e \u003cli\u003eEnsure wiring methods, conductor sizes, and enclosure clearances align with your panel design to maintain safe clearance and terminations.\u003c\/li\u003e \u003cli\u003ePlan for \u003cstrong\u003espares and service kits\u003c\/strong\u003e in facilities with high uptime targets to minimize downtime during routine maintenance or part replacement.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eTechnical snapshot\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 600V\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eReference for compatibility:\u003c\/strong\u003e CKL3B300 part number\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eWhen you choose Siemens CKL3B300, you’re selecting a purpose-built solution for reliable three-phase protection in industrial environments, with a clear path to retrofit, maintenance, and future-proofed panel upgrades.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Siemens","offers":[{"title":"Default Title","offer_id":46427286503586,"sku":"CKL3B300","price":510.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0666\/8094\/6850\/files\/master_generic_ad06fdd7-931c-4a09-bfbe-d05329579cd6.png?v=1765492978","url":"https:\/\/www.ampstate.com\/products\/siemens-ckl3b300-circuit-breaker","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}