Specifications General Product Type: Miniature Circuit Breaker (MCB) Series / Family: C120L Model: 3P C100A L Number of Poles: 3 (for three-phase circuits) Rated Current (In): 100A Tripping Curve: Type C Mounting Type: DIN-rail (35mm) Application: Protection of low‑voltage three-phase electrical circuits in residential, commercial, and industrial installations Electrical Ratings Rated Operational Voltage (Ue): 400V AC (for three-phase systems) Rated Frequency: 50/60 Hz Rated Insulation Voltage (Ui): 500V Breaking Capacity (Icn): 10 kA (for typical AC fault currents) Contact Configuration: Normally open (NO) Protection & Trip Characteristics Overload Protection: Thermal protection for overload conditions Short-Circuit Protection: Magnetic protection for short-circuit conditions Tripping Characteristic: Type C – trips between 5x and 10x rated current Response Time: Instantaneous for short-circuits, delayed for overloads Mechanical & Environmental Terminal Connections: Screw terminals for secure wire connection Mechanical Durability: Designed for approximately 20,000 operations Operating Temperature Range: Suitable for standard indoor environments, typically -25°C to +70°C Mounting: DIN-rail for easy integration into panelboards and distribution panels