Circuit Breaker Information
- Rated Current: 2 amp
- Rated Voltage: 230/400V AC, 50Hz
- Number of poles: 4 pole
- 6 kA short circuit interrupting capacity
- 35mm DIN rail mounted
- It can be manually switched ON and OFF as similar to normal switch if necessary
- Thermal-magnetic overcurrent protection, three levels of short circuit protection
Technical Data
Model | CHN-NB8-634PC02 |
Electrical Parameters | Height | 86 mm |
Width | 18 mm per pole |
Mounting | DIN Rail |
Rated Current (In) | 2A |
Number of poles | 4P |
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: Basic requirements for the operating mechanism of a circuit breaker
Because the effective and reliable movement of a circuit breaker depends on the performance and quality of the operating mechanism in a larger degree, according to the different circuit breakers, the equipped operating mechanism must satisfy the required property and reliability. It mainly includes the following points:
- Possess the closing maintaining function. When the operating command lasts a short period and the operating function has short coordination, there must be a closing maintaining mechanism, so as to ensure that the circuit breaker is still in the closing position after the closing command and operating function disappear.
- Possess a relatively short separating time. The closing time should be irrelevant to the action speed of the operator and the time length of command transmitting. At least, the separating speed must be required to not likely to result in the arc reignition, so as to shorten the separating time as much as possible and reduce the existing time of the short-circuit fault, thus improving the stability of the power system and minimizing the fault scope as much as possible.
- Possess an anti-pumping equipment. In order to avoid the continuous multiple phenomenon of the circuit breaker after closing, it is necessary to use mechanical or electric method, so that the circuit breaker can not be divided and closed after the break, so as to reduce unnecessary actions.
- Possess an interlock equipment. With the interlock equipment in the operating mechanism, the reliability of the circuit breaker can be guaranteed. As a result, when the circuit breaker is in a kind of status, being affected by the wrong action of the operating mechanism, the general operating mechanism must possess separating position interlock, low-pressure and high-pressure interlock, position interlock in the spring mechanism and so on.
Compact miniature circuit breaker, 2 amp, 4 pole, with 6 kA short circuit breaking capacity at 230/400V AC, and C curve trip characteristic, is designed for short circuit and overload protection.