Polyurethane (PUR): High mechanical strength, tear resistance, low-temperature flexibility down to −40∘C. 81 ft)] for standard cable lengths. Wiring diagram shows both PNP and NPN wiring. Dimensions are shown in mm (in. Actual units. The distribution box (DB box) helps safely and efficiently distribute electrical power. A distribution box is a low-voltage electrical enclosure that receives incoming power and distributes it safely to multiple outgoing circuits through protective and switching devices such as MCBs, RCDs, RCBOs, fuses, isolators, busbars, neutral bars, earth bars, and surge protective devices. Aluminum construction helps protect against vandalism and harsh environmental conditions, while knockou dually fed 26-position DC distribution panels.