Key Parameters Category Description / Value Product Line Eaton NZM3 Model / Frame Size NZM3-XKS Release Type Fixed Thermal-Magnetic (Non-adjustable) Rated Current (Iₙ) 185 A (Fixed value) Poles 3-Pole & 4-Pole versions are commonly available. Rated Operational Voltage (Uₑ) Up to 690 V AC, 50/60 Hz Rated Insulation Voltage (Uᵢ) 690 V Rated Ultimate Short-Circuit Breaking Capacity (Iᶜᵘ) Typically 50 kA at 400V AC (IEC 60947-2). The exact value should be verified from the technical data sheet. Release Characteristics Thermal (Long Delay): For overload protection. Magnetic (Instantaneous): For short-circuit protection. Both are factory-set and non-adjustable. Standards Compliance IEC/EN 60947-2 Mounting Fixed Mounting (for bolted installation in panels). Connection Screw terminals. Auxiliary Contacts & Accessories Compatible with a range of NZM3 accessories, such as auxiliary contacts, undervoltage release, and shunt trip.
