MCCB

TheMCCB earth leakageseries is one of the mostadvanced type of NS series of circuit breaker in the world, who introduces one of international vanguard technology development of circuit breaker, its design has manifested the newest craft current limiting principle and the technique of manufacture, has the organization compact, entire characteristics and modulation, high breaking, zero arc over. Its fixed insulation voltage is 750V, is suitable in exchanges 50Hz, fixed working voltage 690 and below, the fixed operating current to 1250A electrical circuit, makes infrequent start. Shunts have the overload, the short circuit and owns the voltage protection installment, can protect the line and the power equipment not damaged. Moulded Case Circuit Breaker(NS+Vigi)250ANumber of poles3,4Rated current (A)In4063065630Rated insulated voltage (V)Ui750Rated impulse withdraw voltage (KV)Uimp8Rated operational voltage (V)UeAC50-60Hz690DC500Type of circuit breakerNHLUltimate breaking capacity(KA rms)IcuAC50-60Hz220/240V65100125380/415V3670125440V3565125500V305090525V223590660/690V81090Service breaking capacity(KA rms)Ics% Icu% 100Utilisation categoryADurability ( C-O cycles)Mechanical7000electrical400VIn1000