Electronic circuit breaker manufacturers are ready to introduce today, the knowledge about small electronic circuit breakers, in order to have a better understanding of small electronic circuit breakers.

I. Structural characteristics of small electronic circuit breakers

Small electronic circuit breakers are made of flame retardant and impact resistant plastic, small and beautiful, with high breaking capacity, quick release and very reliable performance. Small electronic circuit breakers have distinctive features.

1 . Rated current up to 6KA or more, high breaking capacity.

2 . Dual wiring function with easy connection of flexible wires and standard buses.

3 . The combined connection terminal with finger protection device has a very high safety performance.

4 ) With energy storage mechanism operation, the contacts can be closed quickly, solving the adverse effects caused by the fast speed of the artificial operation handle, greatly improving the use of the product time.

5 . Rich choice of accessories, modular, flexible combination, user-friendly installation.

6 . The chassis and some functional parts are made of high flame retardant, impact resistant and high temperature resistant plastic imported from abroad.

7. High current limiting coefficient, excellent cost performance.

II. Small electronic circuit breaker working conditions

1 . The upper limit value of ambient air temperature is below +40, the lower limit value is above -5, and the average temperature value of 24h is below +35. Note: 1. Operating conditions with a lower limit value of -10 or -25 must be indicated to the manufacturer by the user when placing the order. 2 . For operating conditions with an upper limit value above +40 or a lower limit value below -25, the user should consult with the manufacturer.

2 . The installation site elevation must not exceed 2000m.

3 . The atmospheric relative humidity shall not exceed 50% at an ambient air temperature of +40. Higher relative humidity may be permitted at lower temperatures, e.g. up to 90% at +20, and appropriate measures shall be taken for dew condensation that may occur from time to time due to temperature variations.

4 . Pollution level: Class II.

5 . Installation category: type and type.

6 . The magnetic field outside the installation site must not exceed 5 times the geomagnetic field in any direction.

7 . Normally installed vertically with a permissible range of 2 in any direction.

8 . The installation must not be subject to significant shocks and vibrations.

Third, small electronic type circuit breaker should assist in grounding disconnection

Electronic circuit breaker manufacturers in the application of small electronic circuit breakers, the need to select the break according to grounding. This is to achieve collaboration between the trunk line, branch line, terminal line set on the small electronic type circuit breaker, in the event of a fault in the terminal line, only the line grounding circuit breaker work, the power side circuit breaker does not work, in order to improve the reliability of the system power supply. In the case of small electronic circuit breakers realising collaboration in earth protection, the two points of earth circuit breaker leakage action current value and action time are studied.

Regarding the combination of leakage action current, the electronic circuit breaker manufacturer selects the leakage action current value of the electronic circuit breaker on the power side as more than two times the leakage action current value of the electronic circuit breaker on the load side. This is because the standard for small electronic circuit breakers is generally specified, and the electric shock current value needs to be inactive at 50% of the leakage action current. Secondly, regarding the action time fit, the current action time characteristic curve of the electronic circuit breaker on the power side is required, and the current action time characteristic curve of the electronic circuit breaker on the load side must have an action time difference between the power side and the small electronic circuit breaker.

The above is the content of the small electronic circuit breaker. For those interested, please find out more about the following