Circuit Breaker Information
- Rated Current: 25A
- Rated Voltage: 230/400V AC, 50Hz
- Number of poles: 1 pole
- 6 kA short circuit breaking capacity
- Accordance with IEC standard
- Standard 35 mm DIN rail mounting
- C curve trip characteristic gives you the ability to configure the exact protection scheme you required
Technical Data
Model | CHN-NB8-631PC25 |
Electrical Parameters | Height | 86 mm |
Width | 18 mm per pole |
Mounting | DIN Rail |
Rated Current (In) | 25A |
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: Circuit breaker structure
A circuit breaker is composed of conductive circuit, separable contact, arc extinguishing device, insulation component, base, transmission mechanism, operating mechanism and other components. The conduction circuit is used to carry the current, and the separable contact is the executive element to connect or break the circuit, and the arc extinguishing device is used to extinguish the arc quickly and reliably, so that the circuit can finally be disconnected. Compared with other switches, the arc extinguishing device of the circuit breaker has the strongest arc extinguishing ability and the structure is more complex. The motor is on the contact points and the power operating mechanism by a transmission mechanism to drive the transmission force. The operation mode can be divided into manual, electric, pneumatic and hydraulic. Some circuit breakers (such as oil circuit breakers, six sulfur fluoride circuit breakers) are not included in the body of the circuit breaker, but are used as an independent product to provide circuit breaker selection.
10kA miniature circuit breaker with C curve trip characteristics in accordance with IEC standard, 25 amps current rating, excellent breaking capability for its compact size, protect against overloads and short circuits in conductors.