Description TypeYCM8/160SRated Current160APoles3PRated voltage Ue(V)AC400VShort-circuit breaking capacity Icu/1cs(kA)25/18kARated insulation voltage Ui(V)AC1000V General YCM8 Series circuit breakers were developed according to the demand of domesticand international market as well as features of similar products.Its rated insulation voltage up to 1000V, is suitable for AC 50Hz distribution networkcircuit whose rated operation voltage is up to 690V, rated operation current from10A to 800A. It can distribute power, protect the circuit and power supply devicesfrom the damage of overload, short circuit and under voltage, etc.This series circuit breaker feature small volume, high breaking capacity and shortarcing. It can be installed vertically (namely vertical installation) and also installedhorizontally (namely horizontal installation).It complies with standards of IEC60947-2. Product Feature Feature 1: Current limiting abilityLimiting the rise of short circuit current of circuit. The peak short circuit current andI2t power are much lower than the value expected.U shape fixed contact designThe U shape fixed contact design achieves the technique of pre-breaking:When the short circuit current pa through the contact system, there are forces thatrepel each other on the fixed contact and moving contact. The forces were producedwith short circuit current synchronous and enlarge while short circuit current enlarge.The forces make the fixed contact and moving contact apart before tripping. Theyelongated the electric arcing to enlarge their equivalent resistance to limit the rise ofshort circuit current.Feature 2: Modular acceoriesThe size of acceories is same for YCM8 with same frame.You can choose the acceories according to your needs to extend the function ofYCM8.