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EZD400M，4P，350A

The Schneider Electric EZD400M 4P 350A is a 4-pole (3-phase + neutral), 350A, M-frame molded case circuit breaker from the EZD series. This compact and economical device provides reliable overload and short-circuit protection for three-phase four-wire systems, where protection and isolation of the neutral conductor are required.

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Specifications Parameter Specification Product Series EZD Series (Compact MCCB) Model / Frame Size EZD400M Number of Poles 4 Poles (3P + N) – All four poles are protected. Rated Current (In) 350 Amperes (This is the set/rated current of the trip unit within the 400A frame) Frame Current (Iu max) 400 A (Maximum rating for M frame) Trip Unit Type Fixed Thermal-Magnetic (TM-D) or Adjustable Electronic (E). The 350A rating indicates a fixed TM unit or the setting of an electronic unit. Breaking Capacity (Icu @ 400V AC) 50 kA or 65 kA (Depends on specific catalog code - standard or high-breaking version) Rated Operational Voltage (Ue) 400/415 V AC (3P+N systems) Rated Insulation Voltage (Ui) 800 V AC Short-Time Withstand Current (Icw) Typically 15-25 kA for 1s (model dependent) Connection Front connection, screw terminals Terminal Capacity Suitable for copper/aluminum cables (typical range up to 2x150mm² or busbar) Mounting Fixed mounting (panel or DIN rail adapter) Width (4P) Approximately 140 mm Mechanical Life 20,000 operations Electrical Life 8,500 operations at rated current Operating Temperature -25°C to +70°C Standards IEC/EN 60947-2, CCC, CE, RoHS