Everything You Should Know about an Isolator Switch

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Written By Charlotte Miller

Each circuit could be turned on, off, or even to its specified state by the isolator switch. As a disconnector switch, the isolator is kept at the ends of circuit breakers to simply ease circuit breaker repair. As a rule of the thumb, these switches often get used when safety requirements mean that manifold disconnect switches must be provided in sequences in case one fails. You can get a quality isolator switch by PV Connections for your place too!

Purpose of an isolator switch 

In order to understand what an isolator switch really is, you would need to be aware of its overall functionality. It’s mostly used for electrical isolation, mainly at higher voltages, where other techniques, like transformers, are impractical. Isolation is absolutely needed to avert a short circuit or electric shock, which might harm people as well as equipment.

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The key features of an isolator switch 

An electrical isolator is specifically and carefully designed to effectively isolate two diverse parts of an electrical power circuit or even an instrument. The features of good quality isolator switches are given below:

Safety isolation

To avert any sort of electrical shock and equipment malfunctions. While it does not really function exactly like a circuit breaker that forks the circuit automatically in case of an overload, an electrical isolator switches, it is something that gets done manually.

Fail safe configuration

A device that demands two or more switches to act in conjunction with each other may create a situation where the failure of either switch is going to trigger the whole system to fail. The isolator switch owns this danger covered because in case one fails, you still own another switch that may work or operate independently and ensure utmost safety possible.

Overall Size and portability

You have the power to simply create your own configurations. Customise your system so it can easily suit your specific requirements. You can speak with the provider or manufacturer of these switches and ensure that you get the one that suits your needs and is portable for you.

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The types of isolator switches are you can choose 

On the basis of your electrical appliances ranging from solar circuits, even kitchen appliances, power grids, power circuits, and air conditioning systems, you can easily pick either of the following isolation switches.

  • Single-pole isolator switch.
  • Fused isolator switch.
  • 3-pole isolator switch.
  • Double-pole isolator switch.
  • 4-pole isolator switch.
  • Battery isolator switches.

Working of isolator switch 

These electric isolator switches control an electrical circuit by full electrical isolation from the input side to the overall output side of the isolator switch as it has no direct electrical power connection, contrary to circuit breakers. As a mechanical switch, the isolator as well as circuit breaker operate on the same principle, but these are hugely very different. The isolation switches use optocouplers that make use of light as the communication mechanism between switches. Once current flows through an LED in one switch, it is going to emit light making use of the photoelectric effect and this light gets received by a phototransistor in another switch.


So, since you know the importance of isolator switches, make sure that you use the right one for your place. Talk to experts today for the right switch.


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