A residual current device (RCD), or safety switch, protects you from the most frequent cause of electrocution – a shock from electricity passing through the body to the earth. It can also provide some protection against electrical fires.
RCDs are electrical safety devices designed to immediately switch off the supply of electricity when electricity leaking to earth is detected at harmful levels. They offer high levels of personal protection from electric shock.
RCDs must be tested regularly by a competent person to make sure they are working effectively.
SEW 8012EL Features:
● Zero crossing circuitry permit testing at 0° or 180°.
●Extra large LCD(78 × 67mm).
● Very low consumption.
● 50Hz and 60Hz operation● Menu-driven.
● Accurate digital readout of disconnection time.
● Wiring polarity indicator.
● Measure voltage between Line and Earth before testing.
●Frequency measurement indication.
● Over temperature protection.
● Over voltage protection.
● Fuse protection.
● Auto power off.
● Auto off and off override.
SEW 8012EL Specifications:
|Operating voltage (L-E)
(50Hz or 60 Hz)
|Current settings||3mA, 5mA, 10mA, 15mA, 20mA, 30mA, 50mA, 100mA, 150mA, 250mA, 300mA, 500mA.|
|Current selection||Rotary switch selector|
|Phase angle setting||0° and 180° selectable|
|Wiring correctness indication||Yes (LEDs)|
|Trip indicator||Yes (LCD)|
|Voltmeter (L-E)|| 10Vac ~ 280Vac
(50Hz or 60Hz)
|Timer resolution||1ms (Max. Time=2.999s)|
|Current accuracy||±5% ±1mA|
|Voltmeter accuracy||±2% ±1Vac|
|Operating temperature||-0°C ~ 40°C|
|Storage temperature||-10°C ~ 50°C|
|Dimensions||221(L) × 110(W) × 57(D)mm|
|Power source|| 1.5V (AA) × 6
|Safety standard|| EN 61010-1 CAT III 300V