The Schneider EZS 4P 400M 320A is a 4-pole molded case circuit breaker (MCCB) from the EZS series designed for overload and short-circuit protection in four-wire electrical systems.
Specifications:
Type: Molded Case Circuit Breaker (MCCB)
Number of Poles: 4P (4 poles) – Suitable for four-wire systems (3-phase + neutral)
Current Rating: 320A
Frame Size: 400M (denotes the frame size and protection characteristics for higher current systems)
Rated Voltage: Typically 415V (for three-phase systems)
Rated Frequency: 50/60 Hz
Tripping Characteristics:
Thermal-Magnetic Protection: Provides thermal protection for overload conditions and magnetic protection for short circuits.
Adjustable Thermal Settings: Thermal protection can be adjusted to provide tailored overload protection depending on the specific application and load conditions.
Magnetic Trip: Instantaneous disconnection when a short circuit occurs, minimizing the risk of damage to electrical components and reducing downtime.
Breaking Capacity: Typically 36 kA at 415V (maximum fault current the breaker can safely interrupt)
Protection Features:
Overload Protection: Disconnects the circuit if the current exceeds the rated value for a prolonged period, safeguarding the circuit and connected equipment from overheating.
Short-Circuit Protection: Disconnects the circuit instantly when a short circuit is detected, preventing further damage and protecting critical equipment.
Manual Reset: The breaker can be manually reset after it trips due to an overload or short circuit, once the fault is cleared and it is safe to reconnect the circuit.