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JBTB1-63 Miniature Circuit Breaker


JBTB1-63 series small circuit breakers for lighting distribution systems (type C) or electric motor distribution systems (type D). It is mainly used for overload and short circuit protection in lines with AC 50Hz, rated voltage to 230V, 400V, and rated current of 1 ~ 63A, and can also break electrical devices and lighting lines infrequently under normal circumstances.


Applicable Environment

· Ambient temperature: operating ambient temperature: -35°C ~ +70°C, and the average value in 24h shall not exceed + 35°C

· Altitude condition: The altitude of the installation site is ≤2000 M

· Atmospheric conditions:atmospheric pressure 63.0kpa ~ 106.0kpa

· The air is clean and the relative humidity of the air does not exceed 50% at a maximum temperature of + 40°C.

· Higher relative humidity can be allowed at lower temperatures, such as 90% at + 20°C.

· Pollution level: level 2

· Protection grade: IP20

· Installation category: Class II

· Installation mode and environment: the circuit breaker shall be installed according to the requirements of the operation manual, and the installation rail shall adopt TH35/7.5 standard guide rail in GB/T19334-2003; places without significant impact and vibration

· Environmental protection requirements: The product complies with RoHS standard


Applicable Standard



Model Explanation

Product Categories

According to the rated current, there are: 6A, 10A, 16A, 20A, 25A, 32A, 40A, 50A, 63A;

According to the number of poles, there are: 1P, 2P, 3P, 4P;

According to the instantaneous trip type, there are: C type, D type.