Key Parameters Category Description / Value Product Line Eaton NZM3 Model / Frame Size NZM3-XK Release Type Fixed Thermal-Magnetic (Standard "A" Release) • Non-adjustable overload and short-circuit protection. Rated Current (Iₙ) 63 A (This is a common fixed rating for the NZM3-XKA2 variant. Other ratings like 16A, 25A, 40A may exist). Poles 2-Pole (as indicated by the "2" in the model number) Rated Operational Voltage (Uₑ) 500 V / 690 V AC Rated Insulation Voltage (Uᵢ) 690 V Rated Ultimate Short-Circuit Breaking Capacity (Iᶜᵘ) Typically 35 kA to 50 kA at 400V AC (IEC 60947-2). The exact value must be verified from the datasheet for the specific current rating. 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 Connection Screw terminals. Mounting Fixed Mounting (for bolted direct installation in panels). Auxiliary Contacts & Accessories Compatible with a range of NZM3 accessories, which can be added on, such as: • Auxiliary Contacts • Undervoltage Release (UV) • Shunt Trip (ST) • Rotary Handle Operator

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