Specifications Product Type: Molded Case Circuit Breaker (MCCB) Model: NSX250N 4P 160A 2.2 Configuration: 4P (3P + N) Rated Current (In): 160A Mounting: DIN rail or fixed panel mounting Application: Overload and short-circuit protection for three-phase distribution and critical equipment Electrical Ratings Rated Operational Voltage (Ue): 400V AC, 50/60 Hz Rated Insulation Voltage (Ui): 690V AC Rated Impulse Withstand Voltage (Uimp): 8kV Short-Circuit Withstand Capacity (Icu): 50kA Rated Frequency: 50/60 Hz Frequency Range: Typically rated for 50Hz or 60Hz systems Overload and Short-Circuit Protection: Provides reliable thermal-magnetic protection Protection Characteristics Thermal Overload Protection: Thermal mechanism protects against sustained overloads by heating and tripping the breaker Magnetic Short-Circuit Protection: The magnetic trip protects against instantaneous short-circuits by rapidly disconnecting the circuit Trip Curve: C-curve for moderate inrush current tolerance (typically used for general-purpose circuits such as lighting and heating) Adjustable Settings: Protection settings can be adjusted for the specific needs of the application, including overload and short-circuit trip values Mechanical & Environmental Degree of Protection: Typically IP20 (for the front face) Housing: Compact design for easy integration in distribution panels and switchboards Terminal Connections: Screw terminals for secure electrical connections Mechanical Durability: Rated for 10,000 operating cycles Operating Temperature Range: Typically -5°C to +40°C Humidity: Suitable for standard indoor environments Pollution Degree: Designed for general industrial and commercial use Accessories & Options Shunt Release: Optional for remote tripping Auxiliary Contacts: Optional for remote status monitoring Undervoltage Release: Available for additional undervoltage protection