Product Principle
Its design embodies the latest current-limiting principles and manufacturing technology, featuring compact structure, full modularization, high breaking capacity, and zero arcing. Its rated insulation voltage is 750V, suitable for AC (50～60Hz), with rated working voltage up to 690(800)V and rated working current up to 630A, used for infrequent switching and infrequent starting of motors in circuits. The circuit breaker has overload, short-circuit, and undervoltage protection devices, which can protect lines and power supply equipment from damage.
According to the rated ultimate short-circuit breaking capacity (Icu), the circuit breaker is divided into Type D (economical), Type N (standard), and Type H (higher breaking).
This circuit breaker can be installed vertically (i.e., upright) or horizontally (i.e., sideways). It cannot be reverse-fed, meaning only terminals 1, 3, 5 can connect to power lines, and 2, 4, 6 to load lines.
The circuit breaker is suitable for isolation, and the symbol is represented as “”
This circuit breaker complies with the following standards: IEC60947-1 and GB/T14048.1 General Rules
IEC60947-2 and GB14048.2 Low-voltage circuit breakers
IEC60947-4 and GB14048.4 Contactors and motor starters
IEC60947-5.1 and GB14048.5 Electromechanical control circuit electrical
Normal Working Environment
Altitude up to 2000 meters and below;
Ambient medium temperature not higher than +40℃, not lower than -5℃;
Able to withstand the influence of humid air, salt spray, oil mist, and mold;
In places without explosive dangerous media, and where the media does not contain gases and conductive dust sufficient to corrode metals and damage insulation;
Places without rain and snow intrusion;
Pollution degree 3;
Installation category III;
Classification of Circuit Breakers
Some common models include:
CXM2-100D CXM2-100H CXM2-100N CXM2-160D CXM2-160H CXM2-160N
CXM2-250D CXM2-250H CXM2-250N CXM2-400D CXM2-400H CXM2-400N
CXM2-630D CXM2-630H CXM2-630N
Release Modes and Accessory Codes
Note: Among the accessories of CXM1-100, 160, 250, there is no 260,
