CYM1E electronic molded case circuit breaker is suitable for infrequent switching and motor starting in circuits with AC 50Hz, rated insulation voltage of 800V, rated working voltage of 690V and below, and rated working current up to 1250A. Circuit breakers have overload, short circuit, and undervoltage protection functions, which can protect circuits and power equipment from damage.

Circuit breakers are classified into four types based on their rated ultimate short-circuit capacity (Icu): C-type (basic type), L-type (standard type), M-type (higher breaking type), and H-type (high breaking type). This circuit breaker has the characteristics of small size, high breaking capacity, short arcing (some specifications have zero arcing), and anti vibration, making it an ideal product for land and ship use.

This circuit breaker can be installed vertically or horizontally. This circuit breaker cannot be reversed. Connect 1, 3, and 5 to the power line, and connect 2, 4, and 6 to the load line. This circuit breaker has isolation function, and its corresponding symbol is:

This circuit breaker symbol is IEC60947-4 and GB/T14048.1 General Principles; IEC60947-2 and GB14048.2 low voltage circuit breakers, IEC60947-4 and GB/T14048.4 contactors and motor starters; IEC609457-5.1 and GB14048.5 are standards for electromechanical control circuit electrical appliances.

2： Applicable working environment

Altitude of 2000m and below; The temperature of the surrounding medium is not greater than+40 ℃ and the pressure is not lower than -5 ℃; Can withstand the influence of humid air; Can tolerate salt spray; Can tolerate the influence of mold; Capable of withstanding the effects of nuclear radiation; The maximum inclination of ± 25 ° can work reliably under normal vibration of the ship, in a medium without explosive hazards, and in a medium without places that can corrode metals, damage insulation gases and conductive dust; In a place without rain or snow invasion.