1. Introduction
MCCB is a medium and small-capacity circuit breaker.Its main components are enclosed in a plastic housing, featuring a compact structure, light weight, and generally non-maintainable design.
2. Core Functions
Common functions:overload and short-circuit protection
Optional Additional Functions: Some models are equipped with overvoltage /undervoltage protection, intelligent monitoring, etc.
3. Applications (Industrial & Commercial Fields)
Power distribution cabinets in factory workshops
Floor distribution boxes in shopping malls and office buildings
Power distribution systems in new energy power stations and data centers
4. Selection Guidelines
Focus on two key parameters:
Rated Current: Match the maximum operating current of the protected circuit (e.g., select a 100A MCCB for a 100A circuit).
Breaking Capacity: The maximum short-circuit current the breaker can interrupt (e.g., 63kA; a higher value indicates stronger protection against severe short circuits)
Post time: Jan-01-2026