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EZD400M 3P 320A

The Schneider Electric EZD400M 3P 320A is a 3-pole, 320A, M-frame molded case circuit breaker (MCCB) from the EZD series. This cost-effective and compact device provides reliable overload and short-circuit protection for three-phase power distribution circuits in commercial and industrial applications. The "M" frame size (400A maximum) with a 320A trip unit setting offers a balance of performance and economy for feeder protection.

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Specifications Parameter Specification Product Series EZD Series (Compact MCCB) Model / Frame Size EZD400M Number of Poles 3 Poles (3P) Rated Operational Current (In) 320 Amperes Frame Current (Iu max) 400 A (Maximum rating for M frame) Trip Unit Type Fixed Thermal-Magnetic (TM-D) or Electronic (E) based on configuration. "320A" typically indicates a fixed thermal-magnetic rating or the setting of an electronic unit. Breaking Capacity (Icu @ 400V AC) 50 kA / 65 kA (Depends on specific catalog code - e.g., standard or high-breaking version) Rated Operational Voltage (Ue) 400/415 V AC (50/60 Hz) Rated Insulation Voltage (Ui) 800 V AC Short-Time Withstand Current (Icw) Typically 15-25 kA for 1s Connection Front connection (screw terminals) Terminals Suitable for copper/aluminum cables (up to 185 mm² typical) Mounting Fixed mounting (panel or DIN rail adapter) Width (3P) Approximately 105 mm Standards IEC/EN 60947-2, CCC, CE, RoHS Operating Temperature -25°C to +70°C Mechanical Life 20,000 operations Electrical Life 8,500 operations at rated current