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Do you worry about your sophisticated equipment, such as air conditioners, refrigerators, computers at home, or other important machinery in your business, being protected in a hazardous situation? If your answer is yes, then this article is for you. Let me tell you about an electronic device which will help you to protect the electrical system from short circuits and other faults. And that is LT Switchgear. It will help you to control the harmful effects on your equipment and to ‘turn on’ or ‘turn off’ the electrical system in normal and abnormal conditions.

By the end of this article, you will be able to know what are the features, types, and characteristics of LT Switchgear and how to choose the right LT Switchgear with a flexible price. So stay tuned.

What is an LT Switchgear? 

LT Switchgear is a kind of switching device that consists of a structure, chambers, and connections for controlling, reserving, and measuring equipment at the same time.

LT stands for Low Tension or Low Voltages. A LT Switchgear is therefore suited for electrical supplies such as motors and large-capacity electrical devices that operate at less than 1,000 volts alternating current.

LT Switchgears are used for power distribution in interior and exterior substations, power stations, business establishments, and apartment areas, and it is mainly designed to control, protect, and inspect the circuit.

Key Features to Look Out For When Choosing an LT Switchgear

TOS Electrical Company’s LT Switchgear is suitable for different conditions. No matter if it is indoors or outdoors, underground or water, every one of our LT Switchgear works the same. 

Our LT Switchgear is made by following all the International standard and sourcing from reputed manufacturers. We have LT Switchgear of compact size which has a single door and double door version. You can use our LT Switchgear in substation, power station, building or wherever it is suitable.

Our LT Switchgear consists of many parts.  Some common components of LT Switchgear are –

  • Low Voltages Circuit Breakers
  • HRC (High Rupturing Capacity) Fuses
  • Off Load Electrical Isolators
  • Switches
  • Miniature Circuit Breaker (MCB)
  • Molded Case Circuit Breaker (MCCB)
  • Earth Leakage Circuit Breaker

Your LV switchgear’s operations run smoothly because of these components. So, its clear that, for your LV system’s protection these components must be needed.


Fuse is a short, narrow and low melting point conductive wire which is one of the most important components of LT Switchgear. And it is made from a mixture of tin and lead. 

Fuse are of many types. Such As, Round type fuse unit, Rewirable or kit-kat type fuses, Cartridge type fuses, HRC fuses, and Semiconductor fuses. Any of these can be used in LT Switchgear. But most of the time semi enclosed rewirable fuse or HRC fuse is used for LT Switchgear. HRC Fuse’s voltage rating is 500 to 700 vac and ampere rating is 50 A.

You will get amused if you know how the fuse helps the system and how helpful it is to prevent hazardous conditions. I think some of you know that. But if you don’t know that, don’t worry. I am here to tell you all.

Sometimes current flows more than it flows regularly. When this kind of situation arrives, Fuse melts by itself automatically. At that time it also disconnects the electrical circuit from supply and that keeps your home, office safe from fire or hazardous incidents.

Molded Case Circuit Breaker (MCCB)

MCCB is a low level circuit breaker. Maybe now you’re thinking, why MCCB is a low level circuit breaker? Well, MCCB is a low level circuit breaker because its used for under 1000 Voltage. There are other circuit breakers which are also called low level circuit breakers.

Moving on, MCCB gives two special benefits. It gives overload protection as well as short circuit protection. Suppose, a motor can take 10A load of current. But suddenly when the 15A current starts flowing, instantly the MCCB circuit breaker will sense it and trip it.  

Again if by any cause, two phases become aggregated or phase neutral become aggregated then more current will start flowing. At that time, MCCB worked on the same process that we mentioned earlier. It will first sense it with electromagnetic induction and then trip or break it. This is how MCCB works.

MCCB typically are of two types. One is Three Pole MCCB and the other is Four Pole MCCB. TOS Electrical Company provides you LT Switchgear which has MCCB’S of different types with different current ratings and voltage rating.

MCB (Miniature Circuit Breaker)

MCB is a self operator electric switch which can do his operation in overload and short-circuit time. You can call MCB as the replacement of fuse also. When current starts flowing more times high than general time, fuge used to burn and that helps to save your electronic device from hazardous conditions. 

But for the same thing, MCB just breaks the circuit or trip. Again when we turn it on or off manually MCB starts working. Bimetallic strip works on overload protection. It deflects when over-current flowing hits it. And that releases the latch mechanism which helps the contact to open. 

MCB are of different types. They are – Single Pole (SP) MCB, Double Pole (DP) MCB, Triple Pole (TP) MCB, Four Pole (3p + N) MCB. These different kinds of MCB are also available with different current ratings and different voltage ratings.

Earth Leakage Circuit Breaker (ELCB)

ELCB is a type of latching relay that is used in electrical devices. It can detect tiny stray voltages on the metal casings of electrical equipment, which helps to prevent shock. There are two varieties of ELCB. Such as, Current-operated ELCB and Voltage-operated ELCB.

Current-operated ELCBs are used in three-phase or three-wire circuits. A current transformer with many primary and secondary windings makes up these devices. A second terminal on a voltage-operated ELCB is used to connect to the remote reference Earth connection.

When a fault current is rectified, some ELCBs do not respond. However, TOS Electrical Company offers ELCB, which is more efficient, powerful, and cost-effective.

Where to buy LT Switchgear?

TOS Electrical Company provides LT Switchgear with high breaking capacity, good dynamic stability and reasonable structure. From here you not only just get the LT Switchgear but also get help to its maintenance. We always love to give you quality products at a flexible price. 

You can also get other electrical equipment or products for your home or businesses besides LT Switchgear. You can get Substation, Lift, Generator, and their various types of necessary equipment such as Switchgear, PFI Plant, Solar Panel, Busbar Trunking System etc at a flexible price.

We have experience of more than 20 years and are known for offering the best product to our customers. We give you a world class solution as well as hassle-free shipment ordering. So, if you want to buy LT Switchgear or other necessary equipment feel free to drop a message to us. We are always there to assist with the best equipment.

Frequently Asked Question (FAQ)

  1. What is the difference between Switchboard and Switchgear?

Ans: Switchboard is used for low voltages like below 600 volts. But, Switchgear is used for voltages up to 350 KV. So, we can see here that Switchgear has much higher voltages handling capacity than Switchboard. As Switchgear is more flexible and more effective, it cost more too. 

2. What is circuit fault?

Ans: When two or more conductors come in contact with each other while operating at normal voltage difference, the tendency of current not to flow in the desired way but to flow much more in the other way is called circuit fault.

3. What is stability?

Ans: A large power system is formed by the synchronism of multiple synchronous machines. Stability is the inability to bring the system to a stable or normal state after it has been disrupted.

A Final Word

So, hopefully you now know LT Switchgear’s features, characteristics and other important information. If you have any more queries related to this, don’t hesitate to contact us. And lastly, to get efficient and budget – friendly LT Switchgear come visit us.

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