... direct connection, through CT, through CT&PT.2.3 Front board three fixed hole installation, terminal block is make ... of bakelite material, which is moisture-resistant, fire-retardant, high temperature overall.2 ... ) 110, 120, 220, 230,240 1.0S, 2.0S50, 60Starting currentOperating temperature range(°C)Relative humidityVoltage circuitCurrent ...