14D911K MOV Varistor 910V

14D911K MOV varistor (910V), also known as VDR-14D911K, is designed for AC power lines and high voltage industrial systems where strong surge protection is required.

This model is typically applied in AC mains circuits and high energy environments where transient overvoltage events such as lightning surges, switching spikes and grid instability are common.

Typical Use Case:

14D911K is widely used in AC power supplies, industrial equipment, household appliances, power distribution systems and surge protection devices (SPD) to protect circuits from high energy transient events.

The 14mm disc structure provides reliable energy absorption capability and maintains stable performance under repeated surge conditions.

Key Electrical Characteristics:

Varistor Voltage (1mA): 910V ±10%  

Maximum Continuous Voltage: 550VAC / 745VDC  

Maximum Clamping Voltage: approx. 1500V  

Peak Surge Current (8/20μs): 4.5kA  

Maximum Energy (2ms): 300J  

Capacitance (1kHz): approx. 220pF  

Application Focus:

AC power systems  

Industrial equipment  

Power distribution systems  

Household appliances  

Surge protection devices (SPD)  

Design Tips:

* Select MOV voltage based on AC mains voltage level  

* Install across line-to-line or line-to-ground positions  

* Combine with GDT or TVS for multi-stage surge protection  

Engineering Insight:

14D911K is typically selected for higher voltage AC systems where strong surge absorption is required. It plays a key role in protecting circuits from lightning-induced surges and unstable grid conditions.

Comparison Insight:

Comparable to TDK EPCOS S14K550, this model can be used as an alternative solution for high voltage AC protection applications.

Related MOV Varistor Models:

14D820K MOV Varistor

14D471K MOV Varistor

14D561K MOV Varistor

Reference Models:  

TDK EPCOS S14K550  

TDK EPCOS B72214S0551K101  

For general AC applications, 14D471K is widely used.  

For low voltage requirements, 14D820K is recommended.  

All trademarks and part numbers are used for reference only.

For datasheet, quotation or sample request:  

Email: sales@huaandz.com  

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