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
| Model | 05D470K |
| Maximum continuous operating voltage | AC 30V | DC 38V |
| Varistor voltage | 47V |
| Maximum limit voltage | VP 104V | IP 1A |
| Flow through capacity | 1 time 100A | 2 time 50A |
| Rated power | 0.01W |
| Capacitance | 530pF |
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
