{"product_id":"siemens-cmd63l800-800a-600v-3-pole-bolt-on-circuit-breaker","title":"Siemens CMD63L800 - 800 A, 600 V, 3-Pole Bolt-On Circuit Breaker | AmpState","description":"\u003cdiv\u003e\n\u003ch2\u003eSiemens CMD63L800: 800A, 600V, 3-Pole Bolt-On MCCB for Robust Panel Protection\u003c\/h2\u003e\n\u003cp\u003eThe Siemens CMD63L800 is a high-current, 3-pole bolt-on molded case circuit breaker designed to deliver reliable branch circuit overcurrent and short-circuit protection in panelboards and loadcenters. Built for demanding electrical environments, this CMD63L800 unit provides a secure, vibration-resistant connection and consistent protection performance you can trust under heavy use.\u003c\/p\u003e \u003ch3\u003eKey Features that Matter in the Field\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eSecure bolt-on mounting\u003c\/strong\u003e for a rigid, vibration-resistant bus connection that minimizes loosening and maintains optimal electrical contact over time.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eThermal-magnetic trip unit\u003c\/strong\u003e delivers stable, repeatable protection by combining thermal overload sensing with instantaneous magnetic response to short circuits.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003e OEM-compatible design\u003c\/strong\u003e engineered to pair with matching Siemens loadcenters and panelboards, simplifying replacement and reducing compatibility concerns.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eVersatile applications\u003c\/strong\u003e suitable for residential, commercial, and light industrial installations that demand robust, high-current protection.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eTechnical Snapshot\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eManufacturer:\u003c\/strong\u003e Siemens\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003ePart Number:\u003c\/strong\u003e CMD63L800\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e Thermal-magnetic molded case circuit breaker (MCCB)\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eAmperage Rating:\u003c\/strong\u003e 800 A\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eVoltage Rating:\u003c\/strong\u003e 600 V\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003ePoles:\u003c\/strong\u003e 3\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eMounting Style:\u003c\/strong\u003e Bolt-on\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eApplication:\u003c\/strong\u003e Branch circuit overcurrent and short-circuit protection\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eWhy This Breaker Fits Your System\u003c\/h3\u003e\n\u003cp\u003eWhen your electrical distribution must handle substantial load or tight fault protection, the CMD63L800 excels. The bolt-on design ensures a solid, low-resistance connection to the bus, which translates to more predictable trip behavior and less maintenance due to vibration or connection wear. The built-in thermal-magnetic trip unit provides a well-balanced protection curve—allowing normal operation under transient surges while quickly shedding power during dangerous faults. And with OEM compatibility, you gain a straightforward, reliable integration path in Siemens panelboards and loadcenters, reducing the risk of misfit components in critical applications.\u003c\/p\u003e \u003ch3\u003eIdeal Use Scenarios\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eLarge residential subpanels or main distribution feeders requiring high-current protection with dependable reset behavior.\u003c\/li\u003e \u003cli\u003eCommercial electrical rooms where panel reliability and quick fault isolation minimize downtime.\u003c\/li\u003e \u003cli\u003eLight industrial installations needing robust protection for high-demand branch circuits without frequent tripping.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003ePractical Guidance for Installers and Prospects\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eUse CMD63L800 with Siemens panelboards and loadcenters designed to accept this bolt-on MCCB to ensure optimal fit and performance.\u003c\/li\u003e \u003cli\u003eRely on the thermal-magnetic trip for predictable response to overloads and short circuits, helping to safeguard downstream equipment and wiring.\u003c\/li\u003e \u003cli\u003eFor service upgrades or replacements, verify current ratings and panel compatibility to maintain coordinated protection across the distribution system.\u003c\/li\u003e \u003cli\u003eDuring installation, ensure secure mounting and proper alignment with the bus connections to preserve long-term reliability and minimize contact resistance.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eWith the Siemens CMD63L800, you’re choosing a purpose-built, high-current protection solution that aligns with Siemens’ panel and loadcenter ecosystem while delivering dependable performance across residential, commercial, and light industrial applications. Engineered for durability, compatibility, and precise protection, this 800A, 600V, 3-pole bolt-on MCCB stands ready to support safe, efficient electrical distribution in demanding environments.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Amp State","offers":[{"title":"Default Title","offer_id":46349781205154,"sku":null,"price":710.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0666\/8094\/6850\/files\/siemens-cmd63l800-800-a-600-v-3-pole-bolt-on-circuit-breaker-636.webp?v=1788723951","url":"https:\/\/www.ampstate.com\/products\/siemens-cmd63l800-800a-600v-3-pole-bolt-on-circuit-breaker","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}