The enclosure in the OTP series is using a rigid glass reinforced polycarbonate enclosure. The enclosure is UV protected, protected against low-pressure water jets, and hence built for outdoor and indoor use. The cable entries are threaded and have knock out holes for 2 parallel cables and one control cable, both from top and bottom. The handle is pad lockable and made for three padlocks. The cover is interlocked. The interlocking can be by-passed, for thermographic etc. The switch is made for 5 wire system, and have a fixed neutral terminal and PE terminal.