... be selected flexibly. 2. PMAC800 Low Voltage Circuit Breaker provides 12 protection functions such as start overtime ... unbalance protection, earth fault/leakage current protection, short circuit protection, underload protection, external fault protection, overvoltage ... √ √Over current √ √Phase failure √ √Current unbalance √ √Short circuit √ √Earth fault √ √Under load √ √External fault √ √Leakage ...