{"product_id":"siemens-kl3b300","title":"Siemens KL3B300 300A 3-Pole 600 V Circuit Breaker","description":"\u003cdiv\u003e\n\u003cp\u003eSiemens KL3B300 300A 3-Pole 600 V Circuit Breaker is a robust solution for safeguarding heavy-duty, three-phase electrical systems. With a 300 A current rating and 600 V maximum voltage, this KL3B300 unit provides reliable overcurrent protection for your distribution network and critical equipment.\u003c\/p\u003e \u003ch2\u003eKey specifications and design advantages\u003c\/h2\u003e \u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eCurrent rating:\u003c\/strong\u003e 300 A — handles demanding loads without nuisance trips\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003ePoles:\u003c\/strong\u003e 3 — ensures coordinated disconnection across all three phases\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eVoltage rating:\u003c\/strong\u003e 600 V — suitable for industrial mains and machinery\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003ePart number:\u003c\/strong\u003e KL3B300 — precise Siemens replacement within the KL-series\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e 3-pole circuit breaker designed for Siemens distribution systems\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch2\u003eWhy this three-pole protection matters\u003c\/h2\u003e \u003cp\u003eIn three-phase environments, imbalances or faults on a single phase can cascade into costly equipment damage. The KL3B300 trips reliably across all phases, preventing damage to motors, drives, and controllers and reducing downtime. Its 300 A rating makes it ideal for service entrances and feeder protection in medium-to-large electrical installations.\u003c\/p\u003e \u003ch2\u003eUse cases and ideal applications\u003c\/h2\u003e \u003cul\u003e \u003cli\u003eIndustrial facilities with heavy machinery, presses, and conveyors\u003c\/li\u003e \u003cli\u003eCommercial buildings with 3-phase distribution needs\u003c\/li\u003e \u003cli\u003eData centers or server rooms requiring dependable 600 V protection for critical loads\u003c\/li\u003e \u003cli\u003eMotor control centers and panelboards that rely on coordinated three-phase protection\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch2\u003eInstallation and compatibility notes\u003c\/h2\u003e \u003cp\u003eDesigned for Siemens KL-series panels and distribution systems, the KL3B300 integrates into existing 3-phase mains with straightforward replacement or upgrade. When installing, ensure compatibility with your panel’s rating and follow all local electrical codes. For serviceability, consult a qualified electrician to verify proper torque on terminals and proper seating of the breaker in its slot.\u003c\/p\u003e \u003cp\u003eChoose the Siemens KL3B300 when you need a dependable, high-current, three-pole solution for 600 V systems. Order today to secure your 3-phase protection and keep critical operations running smoothly.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Siemens","offers":[{"title":"Default Title","offer_id":46423249223842,"sku":"KL3B300","price":510.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0666\/8094\/6850\/files\/master_generic_229276d9-908d-46df-93e5-6fe31866e0ff.png?v=1765492975","url":"https:\/\/www.ampstate.com\/products\/siemens-kl3b300","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}