it can only be operated when there is no current flowing through the circuit.
Basically, the isolator is a disconnecting switch that can be operated under off-load conditions only, i.e. Sometimes, an isolator is also called as a disconnector. What is an Isolator?Īn isolator is a switchgear component which is used to disconnect or isolate the whole or a specific part of the circuit. and is suitable for handling heavy load currents. A circuit breaker is attached to the electrical devices such as transformers, etc. The circuit breaker also has an in-built extinguishing system which enables it to operate under on-load conditions. The circuit breaker detects such faults with help of a relay system and interrupts the current flow through the circuit, preventing further damagesĪ typical circuit breaker can be operated manually and automatically. The primary function of a circuit breaker is to protect the circuit from overload and short-circuit faults.
Isolator symbol series#
The circuit breaker is arranged in series in an electric circuit so that it can stop the flow of current through the circuit whenever required. What is a Circuit Breaker?Ī circuit breaker is an electrical safety device which works like a switch. Also, it will explain what the circuit breaker and isolator are, so that the reader can easily understand the differences between the two components. This article is meant for explaining the differences between circuit breaker and isolator. Therefore, they are closely related to each other, however, there are many differences between circuit breaker and isolator that draw a line between these two. The isolator and circuit breaker both have a similar function of disconnecting the electrical circuits when there is an issue in electrical system. These two devices are very important in an electrical power system. Amongst these switchgears, the circuit breakers and isolators are commonly used in every electrical power system. The most important set of these devices that helps to ensure this safety is switchgears. In electrical power system, various devices are used to ensure the safe operation of electrical equipment.
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