Audio grade circuit breaker (MCB) Spec: Max. Voltage (Ue): 250VAC Frequency: 50/60Hz FL Amps (In): 16A Trip Amps: 20A Short Circuit Capacity (with back up fuse): Icn 5000A Short Circuit Capacity (without back up fuse): Icn 1500A Delay: Medium/Hi-Inrush (figure1) Pulse Tolerance Curves: (figure1) Resistance per Pole Values (from Line to Load Terminals):