SEW 4112 EL Digital RCD/RCCB/GFC/ELCB Tester

● Microprocessor-controlled.
● 2 Lines × 16 Characters LCD.
● Very low consumption.
● Menu-driven.
● Accurate digital readout of disconnection time.
● Automatic data hold function.
● Zero Crossing Circuitry permit testing at 0° or 180°.
● Disconnection Phase Polarity Shown on LCD.
● Auto off and off override.
● Polarity Trip indicator (Positive or Negative Phase).
● Wiring polarity indicator.
● Measure voltage between line and earth before testing.
● Indicates frequency of voltage L-E.