Product Principle
Its design embodies the latest current-limiting principle 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), 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 level of 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, and 5 can connect to the power lines, and terminals 2, 4, and 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 electrical
Normal Working Environment
Altitude up to 2000 meters;
Ambient temperature not higher than +40°C and not lower than -5°C;
Can withstand the influence of humid air, salt spray, oil mist, and mold;
In places without explosive hazards, and where the medium contains no gases or conductive dust that can corrode metals or damage 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 the accessories for CXM1-100, 160, 250, there is no 260,
