Motor protection electric switch EM series

rotary3-polestar-delta

EM series motor protection On/Off switches can be supplied in 10 setting ranges from 0.3 to 16 amps. In addition to thermal triggering, the switch can also be supplied with quick KA magnetic triggering or UA low-voltage triggering. Operation by means of insulated T-handle is via a robust switching latch with rotary drive. In the version with low-voltage triggering the EM switches ensure the protection called for in the DIN EN 60204 Part 1 provisions against automatic restarting when power is restored following a power cut. The nominal frequency is 50 Hz. Switches for other voltages with a frequency of 50 or 60 Hz can also be supplied on request. The motor protective on-off switches are available for front fixing F, with plastic enclosure T, with plastic enclosure and CEE plug CT. Other executions are also possible by request. The terminal screws are accessible from the backside in case of front fixing F and from the upper side in case of enclosure – executions T and CT. The execution with undervoltage protective system of EM series complies to the requirements of EN 60204. The undervoltage release prevents the restarting of the machine in case of recovery of voltage after voltage failure. The coil is connected at 400 V in case of switching 013 between L1 and L2 with interruption of 2 poles. The rated frequency is 50 Hz. Switches for other voltages at frequencies of 50 Hz or 60 Hz are available by request.