Specifications Parameter Specification Product Range Compact NSX (DC Version) Device Type Molded Case Circuit Breaker - DC Rated Model NSX160F DC Pole Configuration 3-Pole (3P) Rated Operational Current (Iu) 160 Amperes DC Frame Size 160A DC Trip Unit TM160 DC (Thermal-Magnetic, DC calibrated) DC Voltage Rating Typically 250V DC or 500V DC (verify specific model) AC Voltage Rating May have dual rating (e.g., 690V AC / 250V DC) Rated Ultimate Breaking Capacity (Icu) DC Specific: Typically 20-25 kA at rated DC voltage DC Breaking Capacity Significantly different from AC ratings - must use DC values DC Time Constant (L/R) Typically rated for specific time constants (e.g., 15ms) Polarity Requirement Yes - Must be installed with correct polarity Trip Unit Type Thermal-Magnetic (TM) with DC calibration Thermal Setting Fixed at 160A DC (non-adjustable) Magnetic Setting Fixed (typically 10 × In = 1600A DC) Electrical Durability 8,000 operations at rated DC current Mechanical Durability 20,000 operations Arc Voltage Higher than AC versions for DC interruption Connection Type Front or rear for DC busbars/cables Terminal Marking +/– polarity marking for DC Mounting Fixed, Plug-in, or Drawout (DC versions available) Dimensions Similar to AC version but with DC-specific internal design Weight Approximately 4.5-5.5kg Ambient Temperature -25°C to +70°C (operation) Storage Temperature -40°C to +85°C Standards Compliance IEC/EN 60947-2 (DC supplement), UL 489 (DC)