Description: Model: A9SN19819 Type: Miniature Circuit Breaker (MCB) Poles: 4P (Four-pole, for three-phase systems with neutral) Rated Current: 100 A Rated Voltage: 400 V AC Application: The A9SN19819 MCB is designed to protect three-phase electrical circuits with a neutral conductor. It is suitable for use in distribution boards, control panels, switchboards, and power distribution systems to prevent damage caused by overload, short-circuit, or phase loss. The A9SN19819 is ideal for high-power industrial and commercial applications, where reliable protection is needed for circuits with neutral conductors. Mounting: DIN rail mounted Standards Compliance: IEC 60898-1, UL 489, CE marking Parameters: Rated Current (In): 100 A Number of Poles: 4 (Three-phase + neutral protection) Rated Voltage (Ue): 400 V AC (suitable for three-phase systems) Rated Breaking Capacity (Icn): 6 kA (at 400 V AC) – Can safely interrupt fault currents up to 6,000 A. Tripping Characteristics: Type C (Instantaneous tripping for short-circuits with a delay for overload conditions) Overload Protection: Trips between 5 to 10 times rated current (for overload conditions). Short-circuit Protection: Instantaneous trip for short-circuit conditions. Frequency Range: 50/60 Hz Temperature Range: -5°C to +40°C Mounting Method: DIN rail mounted Connection Type: Screw terminals for secure and reliable wiring Mechanical Durability: 20,000 operations Electrical Durability: 10,000 operations Rated Insulation Voltage (Ui): 500 V Rated Impulse Withstand Voltage (Uimp): 4 kV