Jxf distribution box requirements

JXF distribution boxes are standardized low-voltage power distribution enclosures designed for AC 50Hz, rated voltage up to 400–500V, with main busbar currents from 10A to 400A, compliant with GB/T 7251.3.General OverviewJXF series distribution boxes are metal sheet enclosures used for power distribution, monitoring, and protection in residential, commercial, and industrial buildings . They are suitable for single-phase or three-phase wiring and can be installed indoors or outdoors depending on the model . The boxes are typically made of cold-rolled steel or stainless steel, with body and door thickness ranging from 1.5 mm to 2 mm, and mounting plates of 2 mm for larger models .Standard Sizes and CustomizationStandard JXF box sizes range from 200x200x150 mm to 1800x1000x300 mm, but sizes can be customized according to installation requirements . Indoor concealed boxes are ordered with an “R” suffix, e.g., JXF252014R for a 250x200x140 mm concealed box . Customers can specify box size, material thickness, and quantity when ordering .Electrical Ratings and FeaturesRated voltage: 400–500V AC, 50Hz Main busbar rated current: 10A to 400A Protection rating: IP55 for dust and water resistance Locking mechanism: Zinc alloy AB lock with 180° free-opening door and foam sealing strip Applications: Industrial and civil buildings, high-rise buildings, hospitals, schools, stations, and residences Compliance and CertificationJXF distribution boxes are certified according to GB/T 7251.3, a standard for low-voltage switchgear and controlgear assemblies, and are tested by the National Electric Power Industry Quality Testing Center .SummaryJXF distribution boxes provide a flexible, safe, and standardized solution for low-voltage power distribution, with options for customization in size, material, and configuration, making them suitable for a wide range of indoor and outdoor applications .