{"product_id":"siemens-marq-21-breaker-mcc-bucket-300-a-480-v-30-height-3-p-ampstate","title":"Siemens - Marq 21 - Breaker MCC Bucket - 300 A, 480 V, 30\" Height, 3 P | AmpState","description":"\u003cdiv\u003e\n\u003cp\u003eIntroducing the Siemens Marq 21 Breaker MCC Bucket — a purpose-built module for industrial motor control centers that demands a sturdy 300 A, 480 V, 3-Pole configuration within a 30\" tall frame. Crafted for the Siemens Marq 21 MCC lineup, this bucket serves as a dependable OEM replacement and a ready-to-retrofit solution for upgrading existing cabinets.\u003c\/p\u003e \u003ch3\u003eDirect-fit compatibility for Marq 21\u003c\/h3\u003e\n\u003cp\u003eDesigned to integrate seamlessly with Siemens Marq 21 MCC assemblies, the bucket maintains exact form-fit and electrical alignment. It enables straightforward replacement without redesigning adjacent compartments, minimizing downtime and preserving bus-bar, switchgear, and accessory interfaces.\u003c\/p\u003e \u003ch3\u003eKey specifications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eCurrent rating: 300 A\u003c\/li\u003e\n\u003cli\u003eVoltage rating: 480 V\u003c\/li\u003e\n\u003cli\u003ePole configuration: 3-Pole\u003c\/li\u003e\n\u003cli\u003eBucket height: 30 inches\u003c\/li\u003e\n\u003cli\u003eSeries: Siemens Marq 21\u003c\/li\u003e\n\u003cli\u003eApplication: Breaker MCC bucket for motor control centers\u003c\/li\u003e\n\u003cli\u003eUse: OEM replacement and retrofit within Marq 21 MCC lineups\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eWhy this matters in your plant\u003c\/h3\u003e\n\u003cp\u003eWhen you operate large motors and heavy-duty drives, you need a control component you can trust. The 300 A, 480 V, 3-Pole breaker bucket delivers robust interrupt capability and reliable fault isolation within 30\" bays, ensuring consistent motor control, safe energization, and easier maintenance. Because it’s built specifically for the Marq 21 platform, you gain predictable performance and compatibility with existing cabling, bus, and accessory layouts.\u003c\/p\u003e \u003ch3\u003eIdeal use cases\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eOEM replacement in aging Marq 21 MCC installations\u003c\/li\u003e\n\u003cli\u003eRetrofit projects upgrading to current Siemens components while preserving cabinet architecture\u003c\/li\u003e\n\u003cli\u003eNew builds or plant expansions that adopt the Marq 21 MCC standard\u003c\/li\u003e\n\u003cli\u003eIndustrial environments with conveyors, pumps, fans, or large motors that require reliable 3-Pole protection at 480 V\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eWhy choose AmpState\u003c\/h3\u003e\n\u003cp\u003eAmpState sources genuine Siemens MCC components with global availability, ensuring you can source this Marq 21 Breaker MCC Bucket when you need it most. Using authentic parts minimizes compatibility issues and extends the life of your motor control center.\u003c\/p\u003e \u003ch3\u003eInstallation and maintenance notes\u003c\/h3\u003e\n\u003cp\u003eBefore installation, verify the bucket height, 3-Pole configuration, and 480 V rating align with your Marq 21 rack. Follow Siemens installation guidelines for mounting, bus-bar connections, and safety interlocks. Schedule downtime, use proper PPE, and have trained personnel perform the swap to maintain system integrity and plant safety.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"AmpState","offers":[{"title":"Default Title","offer_id":46337299841186,"sku":null,"price":9510.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0666\/8094\/6850\/files\/siemens_model_90_95_95_marq_21_3b9f79f6-08e7-4430-bcde-9ece69232b57.jpg?v=1763783478","url":"https:\/\/www.ampstate.com\/products\/siemens-marq-21-breaker-mcc-bucket-300-a-480-v-30-height-3-p-ampstate","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}