DILM contactor - electric mechanical switch, operated in a manner other than manual, with only one rest position of the movable contacts, capable of making, switching off and conducting current under normal operating conditions of the circuit, as well as in case of overloads. It can be used to switch on fans with a three-way supply by means of an external 230VAC signal or by means of a thermostat, hygrostat, pressure switch etc. Offered contactors have 1 NO contact (except sizes 40 and 50). It is possible to purchase an auxiliary contact 1NO + 1NC.