ABB circuit breaker

ABB circuit breaker Characteristics: The three phase overcurrent unit and the earth fault unit continuously measure the phase current and the neutral current of the protected object. On detection of a fault the relay starts, trip the circuit breaker,initiates auto-reclosing, provides alarm, records fault date etc. In accordance with the application and the configured relay functions. THE ABBCIRCUIT BREAKER SECIFICATION: Moulded Case Circuit Breakers (abb circuit breaker) Number of poles3,4In4025065250Rated insulation voltage (V)Ui800Rated impluse withstand voltage (kV)Uimp8UeAC50/60Hz690DC500Type of Circuit BreakersNHLUltimate breaking capacity (kA rms)IcuAC50/60 Hz220/240V85100125380/415V3670125440V3565125500V305090525V223590660/690V81050Service breaking capacity (kA rms)Ics%Icu%100Utilisation categoryADurability (C-O cycles)Mechanical8500electrical400VIn1500