Two Basic Types Of Circuit Protection Devices

Identify a plug type and a cartridge type fuse open and not open from illustrations.

Two basic types of circuit protection devices.

Voltage earth leakage circuit breaker 2. State the way in which circuit protection devices are connected in a circuit. An overloaded circuit occurs when there s too much current flowing through the circuit. A circuit breaker is a protection device that operates in much the same way as the fuse except that it trips the breaker when it senses abnormal electric current thus opening the circuit.

For this reason they must never be used as the sole protection device for a circuit. The circuit breaker looks like a wall switch and can be reset by switching it completely to the off position and then back to the on position. Like mcbs rccbs are available in various different types that are designated by letters. Identify two types of circuit protection devices and label the schematic symbols for each type.

Protection devices for electrical circuits accomplish two main functions namely consistency as well as protection. There are several different kinds of circuit. A circuit protection device automatically prevents dangerous or excess amounts of temperature excessive amounts of current or a short circuit in an electrical conductor. Circuit protection devices like fuses and circuit breakers are used to protect the circuit s wires and components from circuit overload.

Circuits with rccb protection must always include separate protection against overloads and short circuits. This is most often an mcb but it could for example be a fuse. Protection is assured through detaching power supply in a circuit through overcurrent protection which removes fire hazards and electrocution additionally the accurate protection may be required to obey with organization principles for some products. 3 earth leakage circuit breaker.

It limits the amount of energy that is liberated in the event of electrical failure. There are two types of elcb 1.