Product model description

①	Enterprise code
②	Moulded case circuit breaker
③	Design No.
④	Rated current of frame size
⑤	Rated limiting short-circuit breaking capacity level
⑥	Operation mode
⑦	Number of poles
⑧	Release mode and accessory code
⑨	Purpose code

Note: 1. There is no code for distribution circuit breaker; The circuit breaker used to protect the motor is represented by 2. 2. No code for direct operation; Electric operation is represented by P; The rotation handle is represented by Z.​

Applicable working environment

● Altitude: 2000m and below;
● The ambient medium temperature is not higher than +40℃ (+45℃ for marine products) and not lower than -5℃;
● Be able to withstand the influence of humid air;
● It can withstand the influence of salt mist and oil mist;
● It can resist the influence of mold;
● Be able to withstand the impact of nuclear radiation;
● The maximum inclination is 22.5°;
● It can work reliably under normal vibration of the ship;
● It can work reliably under earthquake (4g);
● In the place where there is no explosive medium, and the medium is free of gas and conductive dust that can corrode metal and damage insulation;
● In a place of no invasion from rain and snow.
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Main specifications and performance of circuit breaker​

Note: CZM8-63/100S can be of upper incoming line or lower incoming line.
The limit breaking and flashover distance includes horizontal and vertical installation
*CZM8-63/100 flashover distance is classified into "0" flashover distance and 50mm flashover distance, which should be noted when ordering. There is no "0" flashover for four pole circuit breaker and 690V specification.​

Main specifications and performance of circuit breaker