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Miscellaneous

DIRBB2007S21W is a type of circuit breaker used to protect the electricalequipment from overvoltage or overcurrent. The basic principle of a breaker isto stop the flow of electricity by opening the contacts of the breaker, and thenthe power can be disconnected and the circuit protected. In this article, we willdiscuss the application field of the DIRBB2007S21W and its working principle.

Application Field of DIRBB2007S21W

DIRBB2007S21W is a general-purpose circuit breaker designed for use in residential,commercial, and industrial applications. It can be used for circuit protectionof equipment such as motors, lighting circuits, air conditioners, telecommunicationsystems, and industrial control systems. It is suitable for use in installationswhere the system voltage does not exceed 660 volts.

Working Principle of DIRBB2007S21W

The working principle of the DIRBB2007S21W is based on the physical propertiesof the contacts of the breaker. When the current passing through the breakerexceeds the rated current, the contacts of the breaker will open to protectthe system from overcurrent. The contacts will then close again when thecurrent drops back down to an acceptable level. The DIRBB2007S21W is equippedwith a bimetallic strip, which is heated up when the current passing throughthe breaker passes the rated current. The bimetallic strip then bends andmakes the contact points open.

The DIRBB2007S21W also has a magnetic trip mechanism that can trip thebreaker immediately when a short circuit occurs. The magnetic trip mechanismworks by allowing a current to pass though the circuit which is then magnetized. When the magnetic field reaches a certain level, it causes the mechanism to trip and open the circuit.

The DIRBB2007S21W also has an overvoltage protection feature. This worksby allowing the current to pass through a voltage transformer. The voltage transformer works by measuring the voltage drop across the circuit when the overvoltage occurs. If the voltage drop is greater than the preset value, the DIRBB2007S21W will trip and open the circuit.

Conclusion

The DIRBB2007S21W is a general-purpose circuit breaker designed for usein residential, commercial, and industrial applications. It can be used forcircuit protection of equipment such as motors, lighting circuits, air conditioners,telecommunication systems, and industrial control systems. It is equippedwith a bimetallic strip, magnetic trip mechanism, and overvoltage protectionfeature. All these features help to provide reliable protection for the systemfrom overcurrent, overvoltage, and short circuit.

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