Its design embodies the latest current-limiting principles and manufacturing technology, featuring compact structure, full modularization, high breaking capacity, and zero arc flash. Its rated insulation voltage is 750V, suitable for AC (50~60Hz), rated working voltage up to 690(800)V, and rated working current up to 630A in circuits for infrequent switching and infrequent starting of motors. 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 capacity).
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 the power lines, and 2, 4, 6 to the 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 devices
Normal working environment
Altitude 2000 meters and below;
Ambient medium temperature not higher than +40°C and not lower than -5°C;
Able to withstand the influence of humid air, salt spray, oil mist, and mold;
In places without explosive media, and where there are no gases or conductive dust that can corrode metals and destroy insulation;
Places not subject to rain or snow;
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 methods and accessory codes
Note: Among accessories for CXM1-100, 160, 250, there are no 260, 360, 460, 268, 368, 468.
