AS100 electric power supply accept the AC electric network. The not insulated compact power supply type AS100-50 is specially designed for Stromag France emergency brakes control type : 3CA2 - OSA - OOSA. The caliper opening and closing are controlled by the alternating phase mains presence or not. The power supply AS100-50 is protected against overloads, short circuits, connection mistakes or insulation fault on the caliper output. A measure of the current allows to regulate Max and Eco currents injected in caliper(s), limit in allowed values the maximum air gap where calipers can be opened, decrease heating and electrical consumption.