20D182K MOV Varistor 1800V

20D182K MOV varistor (1800V), also known as VDR-20D182K, is designed for high voltage surge protection in demanding AC power systems requiring extended voltage range and high energy absorption capability.

This component is typically used in 690V–1000VAC systems, offering effective protection against transient overvoltage caused by lightning strikes, switching surges and grid disturbances in industrial environments.

Compared with lower voltage MOV varistors, 20D182K provides a significantly higher operating voltage range and improved surge endurance, making it suitable for applications such as industrial power systems, heavy equipment, inverters and power distribution networks.

Its 20mm disc construction ensures strong surge current handling and long-term reliability under repetitive surge conditions.

Key Electrical Characteristics:

Varistor Voltage (1mA): 1800V ±10%  

Maximum Continuous Voltage: 1000VAC / 1300VDC  

Maximum Clamping Voltage: approx. 3000V  

Peak Surge Current (8/20μs): 8kA  

Maximum Energy (2ms): 320J  

Capacitance (1kHz): approx. 180pF  

Application Focus:

High voltage AC mains protection  

Industrial power systems  

Motor drives and heavy equipment  

Power distribution networks  

Energy and renewable systems  

Design Tips:

- Select MOV voltage based on system voltage (690V–1000VAC range)  

- Ensure adequate surge energy rating in high power environments  

- Use coordinated protection (MOV + fuse or thermal protection device)  

Related MOV Varistor Models:

20D112K MOV Varistor

20D102K MOV Varistor

20D911K MOV Varistor

20D Series 20mm MOV Varistors

Replacement and Cross Reference

S20K1000 (TDK EPCOS)  

B72220S0102K101 (TDK EPCOS)  

All trademarks and part numbers mentioned are for reference only.

For datasheet, quotation or sample request:

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