{"product_id":"siemens-nmg3b800-800a-3p-circuit-breaker","title":"Siemens NMG3B800 Circuit Breaker, 800A, 3-Pole","description":"\u003cdiv\u003e\n\u003cp\u003eIntroducing the Siemens NMG3B800 circuit breaker — a purpose-built solution for industrial electrical service, maintenance, and replacement projects. This 3-pole, 800 A unit sits squarely in the VL-series family, designed to integrate with existing VL-series panels where the part number matches your application.\u003c\/p\u003e \u003cp\u003eDesigned for demanding environments, the NMG3B800 provides decisive protection for high-current circuits, helping prevent equipment damage and unplanned downtime. By aligning to Siemens' VL series, it offers consistent performance characteristics, predictable tripping behavior, and straightforward field replacement within compatible assemblies.\u003c\/p\u003e \u003ch3\u003eKey specifications\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eManufacturer:\u003c\/strong\u003e Siemens\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eSeries:\u003c\/strong\u003e VL\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003ePart Number:\u003c\/strong\u003e NMG3B800\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eProduct Type:\u003c\/strong\u003e Circuit Breaker\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eAmperage:\u003c\/strong\u003e 800 A\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003ePoles:\u003c\/strong\u003e 3\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eWhy it matters\u003c\/h3\u003e\n\u003cp\u003eIndustrial facilities rely on robust protection for feeders and motors. The 3-pole configuration ensures coordinated shutdown across three phases, helping maintain balance and reducing the risk of partial circuit damage during faults. With an 800 A rating, this breaker is suited for large feeders and main-distribution circuits in manufacturing floors or heavy equipment installations.\u003c\/p\u003e \u003ch3\u003eUse cases\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eProtection for large motor drives and feeders in production lines\u003c\/li\u003e \u003cli\u003eReplacement part for VL-series panels that require the NMG3B800\u003c\/li\u003e \u003cli\u003eEmergency isolation of three-phase circuits during maintenance\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eCompatibility and verification\u003c\/h3\u003e\n\u003cp\u003eTo ensure a correct fit, verify the part number and application requirements. Use the NMG3B800 part number as the primary compatibility signal and confirm panel, bus, and mounting compatibility within VL-series infrastructure.\u003c\/p\u003e \u003cp\u003eNeed help matching a part number or confirming compatibility? Message us and we'll help.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"AmpState","offers":[{"title":"Default Title","offer_id":46415971451042,"sku":"NMG3B800","price":9535.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0666\/8094\/6850\/files\/master_generic_513d6710-3734-4b27-839d-f68e6f4b470a.png?v=1765492974","url":"https:\/\/www.ampstate.com\/products\/siemens-nmg3b800-800a-3p-circuit-breaker","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}