3RB20 Range Internal power supply Auxiliary contacts 1 NO+1NC Manual/Automatic Reset Switching position indicator Test function Phase failure/unbalance sensitivity Electronic Overload Relays The 3RB2 range of Solid State Electronic overloads can be connected directly to Siemens SIRIUS contactors to provide accurate motor overload protection with enhanced single phase sensitivity,Application: Protection of 3 phase AC motors in sinusoidal 50/60Hz network. These relays are not suitable for the protection of single phase or DC loads,Select according to motor full load current and contactor frame size e,g. S00
