20D751K MOV Varistor

20D751K MOV varistor (Варистор, 750V), also known as VDR-20D751K, is designed for protecting electronic and electrical systems against transient overvoltage. It effectively limits surge voltage caused by lightning, switching events and power disturbances, ensuring reliable operation of sensitive components. Also known as: 20D751

This model is commonly used in AC power input stages, industrial systems and electrical equipment where higher operating voltage and stable surge protection are required.

With its 20mm disc structure, this varistor provides strong surge endurance and consistent performance in high voltage environments.

Key Electrical Characteristics:

Varistor Voltage (1mA): 750V ±10%

Maximum Continuous Voltage: 460VAC / 615VDC

Maximum Clamping Voltage: 1240V

Peak Surge Current (8/20μs): 8kA

Maximum Energy (2ms): 200J

Capacitance (1kHz): approx. 500pF

Application Focus:

AC power systems

Industrial control equipment

Power distribution units

Motor drive circuits

Design Tips:

- Select MOV voltage with adequate margin above working voltage

- Consider surge energy requirement for long-term reliability

- Verify lead spacing and mounting compatibility

Related MOV Varistor Models:

20D681K MOV Varistor

20D821K MOV Varistor

20D Series 20mm MOV Varistors

Replacement and Cross Reference

S20K460 (TDK EPCOS)

B72220S0461K101 (TDK EPCOS)

All trademarks and part numbers mentioned are the property of their respective owners and are used only for cross reference and comparison purposes.

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