Zhejiang THOR Electric Co., Ltd
Professional Manufacturer for surge protection device.
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Zinc oxide varistor
Color: Blue
Verification: CE
Product description
Zinc oxide varistor is also known as the "surge absorber" is a voltage attribute resistor with symmetrical characteristics of voltage and current. Its main design is to protect all electronic products or components from switching or lightning strikes. Inducing the effects of the resulting surge
Product specifications
| Model | 05D820K | |
| Maximum continuous operating voltage | AC 50V | DC 65V |
| Varistor voltage | 82V | |
| Maximum limit voltage | VP 150V | IP 5A |
| Flow through capacity | 1 time 400A | 2 time 200A |
| Rated power | 0.01W | |
| Capacitance | 300pF | |
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.
Use attention
1. If the varistor is applied to a high-voltage line similar to thunder, it is recommended to install the varistor on the 220v power line.
2. 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.
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. The sensitive resistor should be stored in a warehouse with a temperature below 40 °C and a relative humidity of no more than 75% RH. There should be no corrosive gas in the warehouse. The varistor stored in the warehouse cannot be directly exposed to sunlight.
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. 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