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Earth leakage protection

 To avoid accidental shock, the earth leakage relay/sensor is used at the source to isolate the power when leakage exceed a certain limit. Earth leakage circuit breakers are used for the purpose. The current sensing breaker are called RCB/ RCCB. In industrial applications, earth leakage relays are used with separate core balanced current transformers. This protection works in the range of milli-Amps and can be set from 30 mA to 3000 mA.


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