{"product_id":"siemens-cm3b800-circuit-breaker","title":"Siemens | CM3B800 | Circuit Breaker | 800A | 3-Pole | 600V","description":"\u003cdiv\u003e\n\u003cp\u003e\u003cstrong\u003eSiemens CM3B800 Circuit Breaker\u003c\/strong\u003e — 800A, 3-Pole, 600V\u003c\/p\u003e\n\u003cp\u003eEngineered for high-demand electrical environments, the CM3B800 is the Siemens answer for dependable overcurrent protection in industrial panels. With an 800-amp rating, a three-pole configuration, and a 600-volt operating ceiling, this breaker is purpose-built for demanding 3-phase systems where safety, reliability, and uptime matter most.\u003c\/p\u003e \u003cul\u003e \u003cli\u003e\n\u003cstrong\u003e800A amperage rating\u003c\/strong\u003e— supports heavy loads and motor circuits common in manufacturing, processing, and facilities management.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003e3-Pole design\u003c\/strong\u003e— provides complete three-phase protection, helping maintain balanced power distribution and safer shutdowns.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003e600V system capability\u003c\/strong\u003e— suitable for standard industrial power distribution within facilities that run at higher voltages.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003ePart reference CM3B800\u003c\/strong\u003e— using the exact part number ensures compatibility with Siemens panels, accessories, and mounting geometry.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eIdeal for maintenance, retrofit, and replacement\u003c\/strong\u003e— a practical choice when upgrading old gear, expanding capacity, or restoring protected circuits to original specifications.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eWhy this specific CM3B800 matters\u003c\/h3\u003e\n\u003cp\u003eChoosing a breaker that aligns with your existing equipment isn’t just about matching current ratings. It’s about preserving system integrity, minimizing downtime, and ensuring your protection scheme behaves as intended under fault conditions. The CM3B800 is designed to slot into compatible Siemens enclosures, maintaining the same electrical characteristics and mounting footprint you expect from a trusted brand.\u003c\/p\u003e \u003ch3\u003eUse cases and ideal applications\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eRetrofit projects in aging distribution panels that service large motors, pumps, or conveyors\u003c\/li\u003e \u003cli\u003eReplacement in facilities upgrading to higher amperage capabilities without changing the panel backbone\u003c\/li\u003e \u003cli\u003eMaintenance cycles for industrial plants where consistent, reliable three-phase protection at 600V is required\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eCompatibility and purchasing tips\u003c\/h3\u003e\n\u003cp\u003eImportant: confirm fit and ratings before ordering. The CM3B800 part number is the best reference for compatibility with your Siemens equipment. When planning a replacement or retrofit, verify that your system is three-phase, 600V, and supports an 800A breaker, and refer to your panel’s documentation to ensure proper form factor and trip characteristics align with this unit.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Siemens","offers":[{"title":"Default Title","offer_id":46424389681314,"sku":"CM3B800","price":310.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0666\/8094\/6850\/files\/master_generic_a085eff1-75dd-47ee-b131-4c8df8f0489b.png?v=1765492976","url":"https:\/\/www.ampstate.com\/products\/siemens-cm3b800-circuit-breaker","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}