Parameter Specification Product Series NZM4 Brand Eaton Product Type Vacuum Contactor Number of Main Poles 3 Poles (3P) Rated Operational Voltage (Ue) Typically 7.2 kV or 12 kV (This is a key parameter that must be confirmed from the nameplate). Rated Frequency 50/60 Hz Rated Normal Current (Ie) Varies by model, common ratings are 200A, 400A, 600A (e.g., NZM4-400). Must be confirmed. Rated Making/Breaking Capacity Defined for specific duties (e.g., AC-3 for motors). High breaking capacity due to vacuum technology. Control Coil Voltage Likely 110V DC (as suggested by "VR" in the model code). Other voltages like 24V DC or 220V DC are possible. Must be confirmed. Operating Mechanism Electromagnetic, spring-operated for fast and consistent opening and closing. Dielectric Strength High, suitable for medium-voltage systems. Auxiliary Contacts Multiple normally open (NO) and normally closed (NC) contacts for control and signaling interlocking. Mounting Fixed mounting on a panel or in a switchgear compartment. Standards IEC 60470, IEC 60694, ANSI/IEEE C37.04
