Legrand DX3 408596 MCB C-Curve is a pole highly durable MCB with finger touch proof terminals conforming to IP20 degree of protection. It is used in Single Phase Supply to break the phase only. It is ideal for the protection against overload and short circuit for Lighting & other Domestic Loads. So, anytime if there is a spike in line voltage or a sudden increase in line current, then this MCB will trip, causing the circuit/power to break, thereby eliminating any associated damage to the connected appliance/load.