{"product_id":"jj3-b400","title":"Jj JJ3-B400 - 400A, Circuit Breaker","description":"\u003cdiv\u003e\n\u003cp\u003e\u003cstrong\u003eJj JJ3-B400 - 400A Circuit Breaker\u003c\/strong\u003e delivers rugged, dependable overcurrent protection for demanding electrical systems. With a 400A current rating, it’s ready to safeguard large-powered circuits and prevent damage from overloads and faults.\u003c\/p\u003e \u003cp\u003eDesigned for use in \u003cstrong\u003epanelboards\u003c\/strong\u003e, \u003cstrong\u003eswitchboards\u003c\/strong\u003e, \u003cstrong\u003econtrol panels\u003c\/strong\u003e, and \u003cstrong\u003eOEM equipment\u003c\/strong\u003e, the JJ3-B400 is a versatile solution built for environments where reliability matters most. Whether you’re assembling a new distribution panel or upgrading an existing one, this breaker provides the safety you need in busy facilities.\u003c\/p\u003e \u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eCurrent rating:\u003c\/strong\u003e 400A\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eApplications:\u003c\/strong\u003e panelboards, switchboards, control panels, and OEM equipment\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eIdeal for:\u003c\/strong\u003e industrial, commercial, and OEM settings where dependable overcurrent protection and safe operation are critical\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eProtection scope:\u003c\/strong\u003e optimizes safety in distribution panels and motor control centers\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eWhy choose the Jj JJ3-B400? It’s engineered to deliver consistent protection for high-demand circuits, helping prevent wiring damage and equipment downtime. In busy distribution environments and motor control centers, this 400A breaker acts as a first line of defense, providing clear interruption during fault events and contributing to safer, more reliable operation of your electrical infrastructure.\u003c\/p\u003e \u003cp\u003ePractical use scenarios include:\u003c\/p\u003e \u003cul\u003e \u003cli\u003eUpgrading protection in industrial panelboards to handle larger loads\u003c\/li\u003e \u003cli\u003eIntegrating robust overcurrent protection in commercial distribution schemes\u003c\/li\u003e \u003cli\u003eIncorporating into OEM equipment builds where strong, reliable circuit interruption is essential\u003c\/li\u003e \u003cli\u003eAdding protection to motor control centers to safeguard motors and control circuitry\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eTips for optimal performance: pair the JJ3-B400 with regular visual inspections and routine protective-device testing as part of your maintenance program. Ensure compatibility with your existing panel footprint and follow manufacturer installation guidelines to maintain reliable protection over the long term.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Jj","offers":[{"title":"Default","offer_id":46390620029090,"sku":"JJ3-B400","price":889.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0666\/8094\/6850\/files\/circuit_breaker_generic_1a1465e9-2a18-4738-bfb6-aa3965ce38fb.png?v=1765378251","url":"https:\/\/www.ampstate.com\/products\/jj3-b400","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}