1P Distribution Box Dimensions

A standard 1-pole (1P) distribution box typically measures around 80–100 mm in width, 120–150 mm in height, and 60–80 mm in depth.Typical Dimensions and FeaturesWidth: 80–100 mmHeight: 120–150 mmDepth: 60–80 mmMaterial: Usually made of ABS plastic or sheet metal, providing insulation and durabilityMounting: Can be surface-mounted or flush-mounted, often with pre-drilled holes or DIN rail compatibilityInternal Space: Designed to accommodate a single MCB (Miniature Circuit Breaker), wiring terminals, and sometimes a neutral/earth busbarProtection Rating: Commonly IP40–IP65, depending on indoor or outdoor useAdditional ConsiderationsCable Entry: Most 1P boxes have knockouts or gland plates at the top and bottom for easy cable routing.Front Cover: Transparent or opaque cover with screw or snap closure for safety and easy inspection.Compatibility: Designed to fit standard DIN rail-mounted MCBs, ensuring modularity and easy replacement.Manufacturer Variations: Brands like ABB, Legrand, Siemens, and BAHRA may have slight differences in dimensions, but the above range is typical for residential and small commercial applications .SummaryA 1P distribution box is compact, designed for a single circuit breaker, and provides sufficient space for wiring and safety components. When selecting a box, ensure the internal width accommodates the MCB, the depth allows proper cable bending, and the height fits the installation location. For precise installation, always refer to the manufacturer's datasheet for the exact model you plan to use .