7/4/2023 0 Comments Isolator symbol![]() Never switch off the isolator when the current is flowing through it. The isolator must be switched on or off when the circuit current is zero. Again, for energization of the electrical supply, the isolator is first made on and then the circuit breaker is switched on. The on-load circuit is first switched off by the circuit breaker and then the isolator is switched off. Isolators are installed before the circuit breaker. One thing to be kept in mind is that while working on a faulty line, the corresponding line isolator must be in the off position in order to ensure the safety of the worker’s life.Īn isolator is a disconnecting switch unit that operates under off-load conditions and isolates the faulty part of the electrical circuit from the main supply. The isolator safeguards the lives of electricians and other workers when they work on a faulty transmission line for repairing/ troubleshooting. ![]() The main area of application of a switch isolator is to isolate the electrical circuit when any sort of maintenance activities are to be carried out on electrical equipment. Additionally, an isolator is designed as a distinct circuit element for ensuring the safety of the electronic components or machines connected to the circuit. Isolator functions by tripping the switch when there is no current flow in the circuit. Another name for an isolator is a disconnector. What is an Isolator?Īn isolator is an electrical switching device that is used to detach or disconnect certain components of the circuit or the entire electrical circuit when the electrical load is zero. But before going into the differences, let’s first understand how a circuit breaker and isolator operate. In this article, we will discuss the key differences between circuit breakers and isolators. ![]() ![]() Both circuit breakers and isolators function by tripping the circuit when excess current flow is detected. The two most prominent and widely used switching gears are – circuit breakers and isolators. Switching devices play a vital role in safeguarding numerous electrical machines and appliances. The main difference between an isolator and a circuit breaker is that an isolator is an off-load on/off device, while a circuit breaker is an on-load protective device. ![]()
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