... office buildings, shopping malls, residences, airports and metro,etc.FUNCTIONS AND FEATURES:♦Front board three fixed installation, ... which is after double-through antirust processing, and the terminal is made of quality bakelite material ... CT or PT & CT.♦Adopts high reliable and long-life electric components,hioverload, do not need ... ), 2.5(10), 5(20), 10(40)A,15(60), 20(80), 30(100),etc.Operation voltage ...