UA110-30-00RA 220-230V 50Hz Contactor

UA110 ... RA: 3-pole contactors for capacitor coupling can be used in systems where the peak current is well over 100 times the rated effective current. The contactors are supplied complete with their attenuation resistors and must be used without additional inductances. Their electrical life is 250,000 switching cycles at Ue lt / 500 V and 100,000 switching cycles at 500 V? Ue? 690 V. UA..RA contactors are equipped with a special front block that ensures serial insertion of three attenuation resistors into the circuit to limit the current peak when the capacitor bank is excited. Their connection also ensures that the capacitors are pre-charged to limit the second current tip when the main poles are turned on. With the help of resistors, the highest current peak of the capacitor can be attenuated when it is switched on, regardless of the level. The 3-pole contactors in the UA ... RA series have a block design. - Main poles: 3 main poles - Control circuit: AC is operated with laminated magnetic circuit