Zinc oxide varistor

Color: Blue

Verification: CE

Product description

The varistor has its own sensitive voltage. When the voltage at both ends is equal to or exceeds its sensitive voltage, the resistance will decrease from infinity and rapidly decrease. It is similar to the short circuit and blows the circuit front fuse. The purpose of protecting the latter circuit is achieved. For a pulse with a small current and a high voltage, since it is equivalent to a short circuit, the high pulse is bypassed by him. When the high voltage is passed, his resistance value returns to infinity, thus protecting the latter circuit. Worn out by high voltage or high pulse

Precautions

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

2. When the surge pulse is applied to the varistor with a short intermittent repetition, the average power at this time should be lower than the maximum static power.

3. If the thermistor is connected between the live part of the equipment and the metal casing, necessary measures must be taken to prevent accidents caused by electric shock.

4. When using the varistor, avoid direct sunlight. Do not work in the open air or outdoors.

Product specifications

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

Incorporated in 2006, Zhejiang Thor Electric Co., Ltd has built everything to offer a wide range of innovative and reliable surge protection solutions and products. 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.

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