53D471K Metal Oxide Varistor 470V 70kA Surge Protection Device with Epoxy Resin Encapsulation
Price:
Negotiable
MOQ:
1000 Pieces
Delivery Time:
2-3 Weeks
Brand:
AMPFORT
Product Description
53D471K Epoxy Resin Metal Oxide Varistor
High-performance screw mounting disc varistor designed for robust surge protection applications. This 53D471K model features epoxy resin encapsulation and delivers reliable transient voltage suppression with 70kA peak current handling capability.
Product Overview
A metal oxide varistor (MOV) is a polycrystalline ceramic component consisting of semi-conducting zinc-oxide grains with secondary phase materials including Bi2O3, Sb2O3, MnO, and CoO located at grain boundaries. This structure provides variable resistance characteristics ideal for surge protection.
Technical Specifications
Key Electrical Parameters
| Parameter | Value |
|---|---|
| Part Number | 53D471K |
| AC Voltage (Vac) | 300V |
| DC Voltage (Vdc) | 385V |
| Varistor Voltage @1mA (V1mA) | 470V (423-517V range) |
| Peak Current (Ip) | 500A |
| Clamping Voltage (Vc) | 775V |
| Max Current (I) | 70,000A |
| Energy Rating (J) | 1080J |
| Capacitance @1KHz | 6500pF |
General Specifications
- Size: 53D series
- Varistor Voltage Range: 200Vdc to 1600Vdc
- Maximum Energy (10/1000μS): 550J to 2500J
- Operating Temperature Range: -40℃ to +85℃
- Maximum Peak Current (8/20μS): 40,000A (2 times) to 70,000A (1 time)
- Varistor Tolerance: ±10%
Physical Dimensions
Dimensional Parameters (mm)
| Dimension | Value |
|---|---|
| D(max.) | 60 |
| H(max.) | 78.2 |
| T(max.) | 7.9 |
| F(±0.5) | 25.4 |
| t (±0.1) | 0.7 |
| L (min.) | 16.5 |
| K (max.) | 3.18 |
| W (±0.5) | 9.7 |
| Ø (M3±0.2) | 4.15 |
Product Series Comparison
| Series | Type | Peak Current | Temp Range | Voltage Range | Energy Rating | Current Handling |
|---|---|---|---|---|---|---|
| 32D | Disc | 25,000A | -40℃ to +105℃ | 200-1800Vdc | 250-1300J | 15,000A (2 times) to 25,000A (1 time) |
| 34S | Square | 40,000A | -40℃ to +105℃ | 200-1800Vdc | 330-1500J | 20,000A (2 times) to 40,000A (1 time) |
| 40D | Disc | 40,000A | -40℃ to +105℃ | 200-1800Vdc | 370-1800J | 20,000A (2 times) to 40,000A (1 time) |
| 53D | Disc | 70,000A | -40℃ to +105℃ | 200-1600Vdc | 550-2500J | 40,000A (2 times) to 70,000A (1 time) |
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Get in Touch
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Company
Dongguan Ampfort Electronics Co., Ltd.
Location
Floor 5,Changlong Industrial Building,No.6,Jiangnan Road,Jingshan,Chashan Town,Dongguan 523323,China
Contact Person
Annie Fang