Overview
The H8B-63 Series Miniature Circuit Breaker is suitable for the overload and short-circuit protection in circuits with AC 50 Hz, rated voltage up to 230 V/400 V and rated working current up to 63 A, as well as the infrequent on-off operation of circuits under normal conditions.
The H8B-63 Series Miniature Circuit Breaker is equipped with accessories such as H8B-F auxiliary contacts, H8B-FB auxiliary alarm contacts, H8B-FL shunt strip, H8B-QY undervoltage release, H8B-GY overvoltage release and H8B-GQY overvoltage/undervoltage release, which provides convenience for the intelligent control of intelligent buildings. Overvoltage, undervoltage and overvoltage/undervoltage are electronic releases, which are used in combination with circuit breakers or residual current circuit breakers. They are suitable for 50 Hz AC lines with rated voltage of 230 V, which can protect circuits against overvoltage, undervoltage and overvoltage/undervoltage caused by line faults, so as to prevent the electrical equipment from being burned down or not working normally due to the fluctuation of power grid voltage.
Circuit breakers can be applied to various places such as industrial, commercial, high-rise, and residential buildings.
The product complies with GB/T 10963.1, IEC 60898-1.
Normal working conditions
1. The upper limit of ambient air temperature shall not exceed +40°C, the lower limit shall not be lower than -5°C, and the average-value VI within 24 hours shall not exceed +35°C.
2. The altitude of the installation location shall not exceed 2,000 meters.
3. The atmospheric relative humidity of the installation site shall not exceed 50% at the maximum ambient temperature of +40°C, and the humidity may be higher at a lower temperature. The average maximum relative humidity of the wettest month shall not exceed 90%, and the average temperature of that month shall not exceed +25°C. Measures must be taken for the condensation on products due to temperature changes.
4. Contamination grade: Grade 2.
5. Installation category: II and III.
6. Install with 35mm standard guide rail.
