... -21 and GB50343). Main features:modularization, DIN rail design, convenient for installation and replacement; Build-in temperature control and circuit breaking ... ;Build in 4mm2 elevating earthing terminal, more reliable earthing. Main technical data:Function modulePowerControl signalBNCNominal Operating voltage Un220V24V12V12VMax. continuous operating Voltage Uc320V36V15V18VVoltage ...