Circuit Protection

Circuit Protection

Choosing the right Circuit Protector Components and Devices for you application

In the electrical and electronics world, there are many cases where mishap takes place. It will lead to severe damage to buildings, offices, houses, schools, industries, etc. Trusting voltage and current are not correct, though safety measures are taken. Once circuit protection equipment is installed it will control the sudden rise of voltage and current. It will help from any accident. Circuit Protection devices are like the heart of the electrical system. There are different types of circuit protection devices where these are installed according to the rating of the system. In electrical equipment, different kinds of circuit protectors are used and for industries, another type is used for homes. Let us discuss the different types of circuit protectors and their importance in detail.

Circuit protection control cabinet

Electrical circuitry is built with great care to ensure that each separate electrical circuit is fully insulated from all the others. This is done so that the current in a circuit will follow its intended path. Once the unit is placed into service, however, many things can happen to alter the original circuitry. Some of the changes can cause serious problems if they are not detected and corrected. While circuit protection devices cannot correct an abnormal current condition, they can indicate that an abnormal condition exists and protect personnel and circuits from that condition.

In Electrical power generation, transmission, distribution to consumers side for commercial and residential purposes, circuit protector devices are mandatory. Gallon Electric provides different types of circuit protection equipment for home users to high voltage circuit protection devices to minimize the risk as much as possible. Gallon Electric always provides the best quality circuit protector devices.

Protection devices for electrical circuits accomplish two main functions namely consistency as well as protection. Protection is assured through detaching power supply in a circuit through overcurrent protection, which removes fire hazards and electrocution. Additionally, accurate protection may be required to obey organizational principles for some products. Designers must take time to know the different protection devices for circuits. Protection devices used to protect circuits from extreme voltages or currents. This article discusses what is protection devices, and the types of protection devices used in electrical and electronic circuits.

The governments know how dangerous electricity is and for that reason they have set clear some safety standards that all electrical equipment should meet like any electrical equipment to be sold in Europe, it should have a CE mark to show that the manufacturer has met all the safety standards when manufacturing. One of the biggest concerns in most residential and commercial buildings is causing an electric short circuit or overloading within the circuit.

The type of equipment you need to buy for such functionality depends on a number of factors. One major issue is buying unapproved electrical protection equipment. This becomes a problem when this equipment didn’t follow the global standards for safety and quality.

If you are looking for the best quality and actually branded Circuit protection devices, you are in the perfect place. Gallon Electric will offer you an industrial-grade Circuit Protection Device with the best quality according to your requirements.

Different types of Protection Devices

The different types of circuit protection devices Offered by Gallon Electric:

  • Fuse
  • Circuit Breaker
  • Poly-Switch
  • Residual Current Circuit Breaker (RCCB)
  • Metal Oxide Varistor
  • Inrush Current Limiter
  • Gas Discharge Tube
  • Spark Gap
  • Lightning Arrester… etc.


A fuse is the simplest circuit protection device. It derives its name from the Latin word “fusus,” meaning “to melt.” Fuses have been used almost from the beginning of the use of electricity. The earliest type of fuse was simply a bare wire between two connections. The wire was smaller than the conductor it was protecting and, therefore, would melt before the conductor it was protecting was harmed

In electrical circuits, a fuse is an electrical device used to protect the circuit from overcurrent. It consists of a metal strip that liquefies when the flow of current through it is high. Fuses are essential electrical devices, and there are different types of fuses available in the market today based on specific voltage and current ratings, application, response time, and breaking capacity.

The characteristics of fuses like time and current are selected to give sufficient protection without unnecessary disruption. Please refer to the link to know more about: Different Types of Fuses and Their Applications

  • DC fuses
  • Cartridge Fuses
  • Automotive Fuses
  • Overvoltage Suppression 
  • Resettable Fuses/Polyfuse 
  • Semiconductor Fuses 
  • AC of Fuses
  • High Voltage Fuses
  • Low Voltage Fuses
  • Time Delay Fuses

If you are looking for the best quality Fuses, you are in right place. Gallon Electric will offer you all types of Fuses for Time-delay fuses of the motor to all electrical Device with the best quality according to your requirements.

Circuit Breaker

A circuit breaker is a circuit protection device that, like a fuse, will stop current in the circuit if there is a direct short, excessive current, or excessive heat. Unlike a fuse, a circuit breaker is reusable. The circuit breaker does not have to be replaced after it has opened or broken the circuit. Instead of replacing the circuit breaker, you reset it. The basic function of a circuit breaker is to stop the flow of current once a fault has occurred. Not like a fuse, a circuit breaker can be operated either automatically or manually to restart regular operation.

Circuit breakers can also be used as circuit control devices. By manually opening and closing the contacts of a circuit breaker, you can switch the power on and off. Circuit control devices will be covered in more detail in the next chapter.

Circuit breakers are available in a great variety of sizes and types. Circuit breakers are offered in different sizes from small devices to large switch gears which are used to protect low current circuits as well as High Voltage Circuits.

The different types of high voltage circuit breakers include the following

  • Air Circuit Breaker
  • SF6 Circuit Breaker
  • Vacuum Circuit Breaker
  • Oil Circuit Breaker
  • Air Circuit Breaker

Gallon Electric will offer you all types of Circuit Breaker Device for the industry to residential purposes with the best quality according to your requirements.

Poly Switch or Resettable Fuse

A resettable fuse is a passive electronic component used for protecting electronic circuits from over-current mistakes. This device is also called a poly switch or multi fuse or poly fuse. The working of these fuses is the same as PTC thermistors in particular situations, however, work on mechanical transforms instead of charge-carrier-effects within semiconductor

Resettable Fuses are used in several applications like power supplies in computers, nuclear or aerospace applications where substitution is not easy.


The RCD-residual current device (or) RCCB- residual current circuit breaker is a safety device that notices a problem in your home power supply then turns OFF in 10-15 milliseconds to stop electric shock. A residual current device does not give safety against a short circuit or overload in the circuit, so we cannot change a fuse instead of RCD.

RCDs are frequently incorporated with some type of circuit breaker like an MCB (miniature circuit breaker) or a fuse, which guards against overload current in the circuit. The residual current device also cannot notice a human being due to by mistake touching both conductors at a time.

These devices are testable as well as resettable apparatus. A test button securely forms a tiny leakage condition; along with a reset button again connects the conductors after an error state has been cleared.

Inrush Current Limiter

This is one type of electrical component used to stop inrush current for avoiding regular damage to apparatus and evade tripping circuit breakers and blowing fuses. The best examples of inrush current limiter devices are Fixed resistors as well as NTC thermistors.

They present a high resistance firstly, which stops huge currents from flowing by turn-on. Because the flow of current will continue, NTC thermistors heat-up, permitting a high flow of current throughout normal operation. These thermistors are generally much superior to measurement kind thermistors, which are intentionally planned for power applications.

Lightning Protection

The lightning protection includes MOV (metal oxide varistor) and a gas discharge tube. Gallon Electric will offer you an industrial-grade Lighting Protection Device with the best quality according to your requirements.

Metal Oxide Varistor

A varistor or VDR (voltage-dependent resistor) is an electronic component and the resistance of this is changeable and depends on the applied voltage. The term varistor has been taken from the variable resistor. When the voltage of this component increases then the resistance decreases. In the same way, when an extreme voltage increases then the resistance will decrease significantly.

This performance creates them appropriate to guard electrical circuits throughout voltage flows. Origins of a flow can comprise electrostatic discharges as well as lightning strikes. The most frequent type of voltage-dependent resistor is the MOV (metal oxide varistor). Please refer to the link to know more about the varistor/voltage-dependent resistor circuit with working

Gas Discharge Tube

A gas discharge tube or gas-filled tube is a collection of electrodes in gas inside a temperature-resistant envelope and insulating. These tubes use phenomena allied to electric discharge within gases, also work through ionizing the gas by an applied voltage enough to reason electrical conduction through the fundamental phenomena of the Townsend expulsion.

An expulsion lamp is an electrical device that uses a gas-filled tube such as metal halide lamps, fluorescent lamps, neon lights, and sodium-vapor lamps. Specific gas-filled tubes namely thyratrons, ignitrons, and krytrons are employed as switching devices in various electrical devices.

The required voltage to begin and maintain discharge is reliant on the force, geometry of the tube, and composition of the fill gas. Even though the cover is normally glass, power tubes frequently employ ceramics, as well as military tubes frequently employ glass wrinkled metal. Gallon Electric will offer you an industrial-grade Gas Discharge Tube with the best quality according to your requirements.

Electrostatic discharge (ESD) Protection

This device protects an electrical circuit from an ESD (Electrostatic discharge), in order to avoid a breakdown of a device. Murata has a wide array of ESD protector devices comprising particular devices very small devices, for high-speed communication, & included noise filters. ESD Protection devices can also be utilized to change Zener diodes (TVS), varistors, as well as suppressors. Gallon Electric will offer you an industrial-grade ESD Protection Device with the best quality according to your requirements.

Surge Protection Device

The term SPD stands for Surge Protection Device is one type of component used in an electrical fitting security system. The SPD device is allied in parallel in the power supply circuit, which can be used on all stages of the power supply system. The surge protection device is the most frequently used and also well-organized kind of over-voltage protective devices.

This is all about the protection devices and their types. The protection of the circuit can be done by using different protection devices in an electrical circuit purposely in order to stop extreme amounts of current. To make sure extreme safety, this article gives an overview of circuit protection techniques, namely circuit breakers, ESD protection electronic fuses, gas discharge tubes, thyristors, and many more. Gallon Electric will offer you an industrial-grade Surge Protection Device with the best quality according to your requirements.

Power outlet strips

In case there are needs for more wall receptacles than is available, you also need fuse outlet strips. If you have a proper power outlet strip, you don’t have to worry about any hazards. However, in case you use fake power outlet strips, or don’t use them properly, be ready for electrical failure or a possible fire hazard. Gallon Electric will offer you industrial grade power strips with the best quality according to your requirements.

LED protection devices

Traditionally, people relied on fuses, TV diodes, and MOVs to prevent surges and transients from damaging some important LEDs. Though, these components don’t guarantee that the entire string of LEDs will not be damaged when one of them is. For that reason, there’s a need to take your time and order some advanced and highly reliable LED protection devices and Gallon Electric will make it easy for you.

Thermal cutoffs, Thyristors, and Thermistors

You need thermal cutoffs to disconnect the electric current in case of any malfunction. They work to prevent the temperatures in a thermostat from rising to dangerous levels. The varistors on the other hand take different electric currents depending on the voltage that is being applied. They are very useful in protecting the sensitive circuits in case of overvoltage or any other issue.

Regardless of the electric circuit protection you need, it’s inevitably important to purchase from a well-known authorized dealer. The dealer should be able to deliver their orders globally and help you save along the way. For such needs, choose Gallon Electric to take your bulk orders and deliver as needed.

What to expect from Gallon Electric?

With all the risk awaiting you when purchasing circuit protection electronic components globally, you definitely want to contract with a genuine and trusted wholesaler that will help you place orders and see your order delivered. That is exactly what Gallon Electric offers you.

Gallon Electric is a worldwide leading authorized distributor of semiconductors and electronic components like different Circuit Protector Devices for over 300 industry-leading manufacturers. We specialize in the rapid introduction of new products and technologies for design engineers and buyers. Our extensive product offering includes semiconductors, interconnects, passives, and electromechanical components, and circuit protector Equipment is one of them.

Gallon Electric has a strong commitment to customer service. That’s why we’ve won awards for our legendary worldwide customer service excellence. We understand the value of having a knowledgeable person there to answer your questions quickly. Gallon Electric is redefining customer-focused distribution.


Gallon Electric would like to set up long-term business relationships with customers worldwide to get a win-win situation. Gallon Electric commits to quality products, high service, and timely delivery to our customers.

Upon request, Gallon Electric can design and produce customized orders as per specific requirements.