With the current increase in attention to the safety of electrical appliances, the market for products such as earth leakage protectors and air switches that ensure the safety of electrical appliances has also been expanded. In this article we will introduce you to voltage protector plugs, their specific functions, differences with leakage protectors, etc. and how to purchase a cost-effective voltage protector.

I. Why voltage protector sockets are needed

In areas where the infrastructure is not ideal (for example, remote areas such as rural areas where power supply lines are very long) or during lightning weather or peak electricity consumption, sometimes the voltage is not as stable as we would expect with a continuous 220V supply or 110 volts.

If the voltage is too high, it will directly accelerate the insulation aging of electrical equipment and reduce the life span; If the voltage is above a certain range, it will directly burn electrical appliances (such as TVs, DVDs, stereos, etc.), and in serious cases, it will damage the appliances or even cause a fire.

If the voltage is too low, the rated power of the load is fixed, the current will become larger, and when the current is too large, it will cause great damage to the motor and compressor. For example, refrigerators, freezers, water pumps, washing machines, air conditioners, etc.; So for high power or high value devices, voltage protector sockets are needed to extend the life of the device and to ensure safety.

Four points buyers should know about voltage protector sockets

In addition, the voltage protector plugs are portable, plug and play, avoiding tedious professional steps such as installation.

II. Voltage protector socket classification and working principle

1) Classification: There are two main types of voltage protector sockets, one is a protector designed for a specific voltage of appliances, such as refrigerators, high voltage Hivolt, TV, fax, light socket protectors with indicators to show the active working status. The other type is the one that can adjust the set voltage value to suit different devices according to your needs. The difference is shown in the chart below.

2) Working Principle: First, take a 220V surge protector for example. You can set a number in advance. If the factory setting working range is 165-250V, the voltage protector will cut off the power when the voltage is lower than 165V or higher than 250V to protect the working devices. When the voltage returns to the set range, the power is automatically turned on again.

III.Variations with earth leakage protectors and air switches

In addition, voltage protectors do not play the same role as earth leakage protectors and air switches.

(1) Leakage protectors, referred to as leakage switches, also known as leakage circuit breakers, can be divided into 3 types: leakage protection relays, leakage protection switches, and leakage protection sockets. Leakage protection is a combination of circuit breaker and residual current working protector, with overload and short circuit protection, mainly to prevent accidental electric shock.

(2) Air switch, also known as air circuit breaker, is a type of circuit breaker. Its function is to automatically cut off when the current in the circuit exceeds the rated current. The current through the switch exceeds a certain current due to heat to the thermal arcing of the metal sheet and causes the power supply to be turned off, to protect the circuit does not burn out due to overcurrent, only to protect the role of the circuit.

(3) Voltage protector, for sudden voltage changes, over-voltage, under-voltage can be intelligent automatic quick to cut off the power supply devices. The main role is to carry out comprehensive voltage monitoring, monitoring and protection.

Many times we only consider leakage protection and electric shock protection. Therefore, in the daily decoration or purchase, we only choose the air switch and leakage protector, but we ignore the current and voltage protection. A current that is too high or too low can damage line equipment, and in serious cases can cause property damage, personal injury, or death.

IV. How to choose and judge whether the voltage protector is good or bad

So how should buyers choose a cost-effective voltage protector? You can mainly judge from the following four points:

1. See if he is smart. If there is a built-in circuit board and program control, you can change the program to achieve your specific parameter needs.

2. Look at how good the quality is. If there are built-in brackets and wires, and the plugs are made of good brass parts, there is some guarantee of quality.

3. Look at their processing skills. If the SMT SMD process, the protector performance is more stable and reliable.

4. Look at the material of its cover. If the protective shell uses ABS flame retardant material, the texture is better.

I am sure that from the above, you have a good understanding of voltage protector sockets and how to provide cost effective voltage protector sockets.