Technical Parameters Parameter Category Specification / Value Brand Eaton Product Model NZMN3-A500 Standard IEC 60947-2 Type Miniature Circuit Breaker (MCB) Number of Poles 3 Poles (3P) Rated Current (Iₙ) 50 A Tripping Characteristic / Curve Type C (Instantaneous trip: 5 to 10 x Iₙ) Rated Operational Voltage (Uₑ) 400 V AC, 50/60 Hz Rated Insulation Voltage (Uᵢ) 500 V AC Rated Impulse Withstand Voltage (Uᵢₘₚ) 6 kV Breaking Capacity (I꜀ᵤ) 10 kA (at 400V AC) Electrical Endurance 10,000 cycles Mechanical Endurance 20,000 cycles Terminal Capacity - Top & Bottom Terminals Solid: 50 mm² Stranded: 35 mm² Fine-stranded: 25 mm² Terminal Torque 3.0 N·m (Maximum) Mounting 35 mm DIN Rail (EN 60715) Degree of Protection IP20 (when installed in an enclosure) Ambient Temperature -25 °C to +60 °C (for reference) Approvals / Certifications CE, CCC, IEC 60947-2
