Chint 400A 3-Pole Molded Case Circuit Breaker -MCCB

Chint 400A 3-Pole MCCB (typically from the NXM or NM8 series) is a robust circuit protection device engineered for demanding commercial and industrial electrical systems. It is designed to safeguard three-phase circuits against damage caused by overloads, short circuits, and electrical faults, making it an essential component for power distribution boards, control panels, and feeder circuits.

Key Features
High-Capacity Protection: With a rated current of 400A, it is built to handle significant electrical loads in medium to large-scale installations like factories, data centers, and commercial buildings.
Three-Pole Design: Provides simultaneous switching and protection for all three phases of a three-phase power system.
Thermal-Magnetic or Electronic Trip Unit: Available with both trip unit types:
Thermal-Magnetic (S/F/H Code): Offers fixed or adjustable protection. The thermal element protects against persistent overloads (long-time delay), and the magnetic element provides instantaneous protection against short circuits (high currents).
Electronic (NM8N/NXMS Series): Often provides more precise and adjustable protection settings for overload (long-time), short-circuit (short-time), and instantaneous trips, enhancing selectivity.
High Breaking Capacity (Icu​): Features a high ultimate short-circuit breaking capacity (e.g., 50kA at 415V AC, depending on the specific model/code), ensuring safe interruption of high fault currents to minimize system damage.
Accessory Compatibility: Supports a range of optional accessories for enhanced functionality, including auxiliary contacts, alarm contacts, shunt trips, under-voltage releases, and motor-driven mechanisms for remote operation.
Compliance: Fully compliant with international standards, typically IEC/EN 60947-2, ensuring globally recognized safety and performance.