Circuit Breaker Information
- Rated Current: 32 amp
- Rated Voltage: 230/400V AC, 50Hz
- Number of poles: 3 pole
- 6 kA short circuit interrupting capacity
- 35mm DIN rail mounted
- Suitable for supplementary protection
- With C curve trip characteristic
Technical Data
Model | CHN-NB8-633PC32 |
Electrical Parameters | Height | 86 mm |
Width | 18 mm per pole |
Mounting | DIN Rail |
Rated Current (In) | 32A |
Number of poles | 3P |
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: Measurements of molded case circuit breaker prevent the burning of brake windings
- Time delay normally open contact is changed to a pair of normally open contact. Auxiliary switch contact and auxiliary switch arm screw are often checked. The position of auxiliary switch is adjusted correctly to make sure that auxiliary switch and circuit breaker brake are put in the right position where they work efficiently.
- Coil of brake is well fixed and its iron core is often checked to make sure that it runs smoothly.
- The switch-on time generated by protection control device is capable of switching on the coil brake and quitting the switch-on order in a short time.
- In the annual maintenance work, the connecting rod mechanism of circuit breaker should be properly adjusted and the free tripper of circuit breaker is often checked to make sure it works well and it can be disconnected reliably in the rated low voltage between 30% and 65%.
32 amp 3 pole miniature circuit breaker at lower price, standard 35 mm DIN rail mounting, easy to install. It is capable of protecting the system against short circuit current up to 6kA, with C curve trip characteristic.