age and temperature close to the contactor. It also specifies the maximum peak current Î values accepted by the contactor. The capacitors must be discharged (maximum residual voltage at terminals ≤ 50 V) before being re-energized when the contactors are making. In these conditions, electrical durability of contactors is equal to 100 000 operating cycles. The UA.. series 3-pole contactors are of the block type design. – Main poles and auxiliary contacts: 3 main poles, 2 built-in auxiliary contacts – Control circuit: AC operated with laminated magnet circuit – Accessories: a wide range of accessories is available.