Technical Specifications Parameter Specification / Typical Value Manufacturer / Brand Eaton Model Number NZMN3-A400 Product Line NZM Rated Current (Iₙ) 400 A Poles 3 Frame Size NZMN3-A Rated Operational Voltage (Uₑ) 400/415 V AC (IEC) / 690 V AC Rated Insulation Voltage (Uᵢ) 690 V AC Rated Frequency 50/60 Hz Rated Ultimate Breaking Capacity (I꜀ᵤ) Typically 50 kA / 65 kA @ 400V (Must be verified from datasheet) Trip Unit Type Thermal-Magnetic (Non-Adjustable) Overload Protection (Ir) Fixed at 400A Short-Circuit Protection (Im) Fixed magnetic trip Installation Fixed Type Standards Compliance IEC 60947-2 Electrical Life Several thousand cycles (e.g., 5,000) Mechanical Life Tens of thousands of cycles (e.g., 20,000) Terminal Torque Refer to official manual (Specific torque for 400A terminals)
