Technical Parameters Parameter Specification Product Series Eaton NZM1 Product Type Electronic Trip Unit (Release) for Air Circuit Breaker Rated Current (In) of Frame 4 A (This is the fixed rating for the breaker frame) Rated Operational Voltage (Ue) Up to 690 V AC Rated Insulation Voltage (Ui) 1000 V AC Rated Frequency 50/60 Hz Protection Functions L (Long-time Overload), S (Short-time), I (Instantaneous), G (Ground Fault) Ground Fault Protection (Iₙ) Adjustable range (e.g., 0.2 - 0.8 x In or similar, specific to setting) Short-Circuit Breaking Capacity (Icu) Dependent on the complete breaker assembly, typically high (e.g., 50kA to 100kA at 400V) Trip Setting Adjustment Via DIP switches and potentiometers on the release unit Communication Capability No (The "XFIR" version is typically a standard electronic release without communication. Versions with "C" often have communication). Mounting Integrated into an NZM1 circuit breaker frame Standards Compliance IEC 60947-2, UL 1066, CSA 22.2
