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 realizing the protection of the varistor of the latter circuit. Parameters are: varistor voltage, current capacity, junction capacitance, response time, etc.

Product specifications

Product advantages

1. Multiple surge withstand capability: standard, high surge, super high surge

2. Large current processing and energy absorption capacity

3. Fast response time

4. Low leakage current

Use attention

1. When a varistor is used between the power line and the ground, the voltage between the line and the ground may rise due to poor grounding. Therefore, a varistor with a higher nominal voltage than the line-to-line use is usually used.

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

3. The varistor should be protected from high temperature and high humidity such as wind, rain and water vapor. It should also avoid working under dust, salt and harmful gases. Protection box should be used if necessary.

4. Direct exposure to the sun or the ambient temperature next to the heater may exceed the operating temperature that the varistor can withstand.

working principle

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

Company profile

Thor has been designing new products to meet the RoHS directive since 2006. Thor’s ongoing commitment to RoHS compliance includes continuing efforts to reduce the presence of hazardous substances in the design and manufacture of a growing number of popular products. is committed to meeting the requirements of the European Union's Waste Electrical and Electronic Equipment (WEEE) directive. This prompt varies producers of electrical and electronic equipment to finance the take-back for re-use or recycling of their Products placed on the EU market after 2005.

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