Aluminium housing, metal-polypropylene. For 30.000 operating hours. According to VDE to 25µF. The capacitors have a protective cap made from aluminium and a 180mm cable connected on the side. On the bottom there is a mounting screw with toothed lock washer and nut. Technical Data: Capacity tolerance ±10%. Frequency 50 to 60 Hz. Voltage 400 V. Loss < 0.3%. Temperature range -25 to +85°C. Insulation test voltage (2 Sec.) 2.5 kV (to ground).