Technical Parameters Parameter Category Specification / Value Brand Eaton Product Series NZM Product Model NZMN3-A400-E Product Type Miniature Circuit Breaker (MCB) with Auxiliary Contact Standards IEC 60947-2 Number of Poles 3 Poles (3P) Rated Current (Iₙ) 40 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 Breaking Capacity (Icu) 10 kA at 400V AC Auxiliary Contact 1 NO (Normally Open) - [Note: The "E" suffix typically signifies an auxiliary contact, but the exact configuration (NO/NC) should be verified with the official datasheet. Some coding systems use "E" for NO contact.] Electrical Life 10,000 cycles Mechanical Life 20,000 cycles Mounting 35 mm DIN Rail (EN 60715) Terminal Capacity Up to 25 mm² Approvals / Certifications CE, CCC, IEC 60947-2
