Thermal residual current circuit breaker RDL67-63

ground faultresidual current4-pole

RDL67-63 series electromagnetic residual current operated circuit breaker is mainly applied to the circuit of AC50Hz, rated working voltage 230V or 400V, rated current up to 63A for protecting human indiretly against electric leakage, and for preventing the fire result from the ground fault due to the damaged insulation of the equipment or circuit. RDL67-63 series electromagnetic residual current operated circuit breaker, RDL67 electromagnetic residual current operated circuit breaker's leakage protection preformance do not need the accessory power supply, and is not inflenced by the power grid voltage. Struction and Working principle This series residual current operated circuit breaker is consisted by Main switch, zero-sequence current transefomer,leakage tripping, testing devices in a plastic case. When the electric leakage and electric shock happening, only the residual current or current leakage reached to the rated residual operated current, the zero-sequence current transformer outputed the signal to drive the leakage tripping operating, then it stops the power to provide the electric leakage and shock protection. Electronic circuit breaker's working priciple see Fig 1. Normal working condition and Installation environment 3.1 Temperature: no higher than +40 ºC , and no lower than -5 ºC,and the average temperture no higher than +35 ºC. 3.2 Altitudeof Installation location no more than 2000m. 3.3 The relative humidity: no more than 50%, when Temperature is +40 ºC. The product can withstand the higher humidity under lower temperature,