TeSys Deca mechanical latch block, for LC1D09-D38, LC1DT20…DT40, LC1D40A…D80A 3P, LC1DT60A…DT80A 4P contactors.Electrical latching and unlatching is performed applying a 24V control voltage pulse (> 100ms in AC, 250ms in DC).Unlatching can be manually operated.Clip-on mounting on front of contactor, connection by screw terminals.For applications with high operating rates until 1200 cycles/hour.Multi standards certified (IEC, UL, CSA), Green Premium compliant (RoHS/REACh).