Circuit Breaker Information
- Rated Current: 16 amp
- Rated Voltage: 230/400V AC, 50Hz
- Number of poles: 1 pole
- DIN rail mounted and module width of only 18 mm (per pole)
- 6 kA short circuit interrupting capacity
- Thermal-magnetic overcurrent protection, C curve of short circuit protection
Technical Data
Model | CHN-NB8-631PC16 |
Electrical Parameters | Height | 86 mm |
Width | 18 mm per pole |
Mounting | DIN Rail |
Rated Current (In) | 16A |
Number of poles | 1P |
Rated Voltage (Ue) | 230/400V |
Rated Insulation Voltage (Ui) | 500V |
Dielectric Test Voltage | 2000V |
Reted Frequency | 50Hz |
Short Circuit Interrupting Capacity | 6KA |
Trip Characteristic | C Curve (5-10In) |
Rated Short-Circuit Breaking Capacity | 6000A |
Operating Short-Circuit Breaking Capacity | 6000A |
Mechanical Parameters | Electrical Life | 10000 times |
Mechanical Life | 20000 times |
Flame Retardant Grade | V0 |
Protection Degree | Direct installation: IP20B Installed in the distribution box: IP40B |
Calibration Temperature | 30℃ |
Operating Temperature | -35℃~+70℃ |
Storage Temperature | -35℃~+85℃ |
Tightening Torque | 2 N.m |
Max. Tolerable Torque | 2.5 N.m |
Terminal Size Acceptability–Min/Max | 1 mm2 / 25mm2 |
Wire Insertion Depth | 13mm |
Circuit Breaker Dimension (Unit: mm)

Tips: What is a circuit breaker
Circuit breaker is a switching device that protect an electrical circuit from damage caused by overcurrent, typically resulting from an overload or short circuit. Circuit breaker can be used for distributing electric energy, starting asynchronous motors infrequently and protecting power circuit and motors. They can automatically cut off the circuit where major failures occur such as overload, short circuit and under-voltage etc, which is equivalent to the combination of fuse switch and overheat relay. According to the range of application, they are divided in to high-voltage circuit and low-voltage circuit breakers, and high-voltage ones above 3kV are known as high-voltage electrical apparatus.
High quality miniature circuit breaker is intended for the short circuit and overload protection in the AC 50Hz circuit, 230/400V single pole voltage and a rated current of 16A. 6kA short circuit breaking capacity, meets commercial and industrial applications.