Zinc oxide varistor

Color: Blue

Verification: CE

Product description

The varistor is a voltage limiting type protection device. Using the nonlinear characteristics of the varistor, when an overvoltage occurs between the two poles of the varistor, the varistor can clamp the voltage to a relatively fixed voltage value, thereby protecting the latter circuit.

Product specifications

Use attention

1. It must be ensured that when the voltage fluctuation is maximum, the continuous working voltage will not exceed the maximum allowable value, otherwise the service life of the varistor will be shortened;

2. The surge current absorbed by the varistor should be less than the maximum flux of the product.

3 varistor should not be installed near heat or combustible components, it is best to have a gap greater than 3mm to ensure that it works within the specified operating temperature range

4. In applications where surge currents are repetitive, the peak surge current and surge energy through the varistor should not exceed the pulse life characteristics.

working principle

When the voltage applied to the varistor is below its threshold, the current flowing through it is extremely small, which is equivalent to a resistor with an infinite value. That is, when the voltage applied to it is below its threshold, it is equivalent to an open state switch [1]. When the voltage applied to the varistor exceeds its threshold, the current flowing through it surges, which is equivalent to an infinitely small resistance. That is, when the voltage applied to it is above its threshold, it is equivalent to a closed state switch.

Company profile

Thor is all about protecting against the damaging effects of power transients. It is our goal and mission to connect our customer challenges with high-quality, right-priced solutions and products – completed by unrivaled customer service and technical support. All types and classes of our lightning and surge arresters 20KA~200KA(8/20μS) and 15KA~50KA(10/350μS) are tested and pass all the requirements based on their class.

FQA

Q: What advantages do you have?

A: We have been manufacturing and exporting SPD for more than 10 years !

We have CE and TUV certification

Q: Can I get some samples?

A: We support small quantity samples order ! please contact with our staff and leave your detail contact information , we will answer you within 24 hours

Q: How long does it take to deliver?

A: Fast delivery : 3~7days after payment

Q: Could you do OEM for us?

A: We have good experience on OEM service

Q: How long is your products warranty ?

A: 3 years warranty

Q: How to pay?

A: We accept T/T, Paypal, Western union, L/C, Trade Assurance