14D301K MOV Varistor 300V

14D301K MOV varistor (300V), also known as VDR-14D301K, is designed for DC and industrial systems operating at higher voltage levels where consistent surge protection is required.

Compared with 14D271K, this model offers increased voltage margin, making it suitable for applications around 270V–300V DC systems with improved stability under transient conditions.

Typical Use Case:

This device is commonly used in industrial power supplies, automation systems, communication equipment and embedded electronics to protect against switching surges, ESD and transient voltage spikes.

The 14mm disc structure provides strong surge handling capability and stable performance over long-term operation.

Key Electrical Characteristics:

Varistor Voltage (1mA): 300V ±10%  

Maximum Continuous Voltage: 190VAC / 250VDC  

Maximum Clamping Voltage: approx. 500V  

Peak Surge Current (8/20μs): 4.5kA  

Maximum Energy (2ms): 210J  

Capacitance (1kHz): approx. 670pF  

Application Focus:

DC power systems (270V–300V)  

Industrial automation equipment  

Communication electronics  

Embedded control systems  

Signal line protection  

Design Tips:

* Select MOV voltage with sufficient margin above working voltage  

* Install near power entry points or sensitive components  

* Combine with TVS diodes for improved transient suppression  

Engineering Insight:

14D301K is typically selected for higher voltage DC systems where stable clamping and strong surge absorption are required. It performs reliably in circuits exposed to frequent voltage fluctuations.

Comparison Insight:

Comparable to Bourns MOV-14D301K or MOV-14D301KTR, this model can be used as an alternative solution for similar voltage protection requirements.

Related MOV Varistor Models:

14D330K MOV Varistor

14D471K MOV Varistor

14D431K MOV Varistor

Reference Models:  

MOV-14D301K   Bourns

MOV-14D301KTR  Bourns

For general-purpose designs, 14D471K is widely used.  

For higher voltage applications, 14D431K is recommended.  

All trademarks and part numbers are used for reference only.

For datasheet, quotation or sample request:  

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