Circuit Breaker Information
- Rated Current: 10 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, three levels of short circuit protection, categorized by C curve
Technical Data
Model | CHN-NB8-631PC10 |
Electrical Parameters | Height | 86 mm |
Width | 18 mm per pole |
Mounting | DIN Rail |
Rated Current (In) | 10A |
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 miniature circuit breaker?
Miniature circuit breaker (MCB), also known as micro circuit breaker, is mainly used for alternating current 50Hz or 60Hz and the workplace below rated voltage 480/277V and rated current 63A. Miniature circuit breaker that has the features including advanced structure, reliable performance, strong breaking capacity, well designed shape and small size, is suitable for lighting of office buildings, houses and similar buildings, overload of distribution line and equipment, and short circuit protection, as well as, infrequent switch on-off operation and conversion.
Miniature circuit breaker is commonly used to connect and break the circuit by separating the moving contact and the fixed contact of miniature circuit breaker. When the miniature circuit breaker is switched on, the moving contact and the fixed contacts are closed under the opposite mechanical motion.
Compact miniature circuit breaker with 1 pole, 10A current rating, standard ratings of 6 kA at 230/400V AC. C type tripping curve, easy installation on DIN rail, suitable for supplementary protection.