LUA signaling contact 1 NO + 1 NC. TeSys range. Device short name: LUA1. Error signaling. Rotary indicator handle in ready position. [Ue] rated operating voltage: 250 V AC = 250 V DC. [Ui] rated insulation voltage: 250 V according to CSA, 250 V according to IEC 60947-5-1, 250 V according to UL. [Ith] Conventional thermal current: 5 A. Minimum switching voltage of 17 V. Minimum switching current of 5mA. Screw fixing terminals.