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Bourns® Innovative IsoMOV™ Protectors


As the most significant advancement in MOV design in decades, Bourns® IsoMOV™ hybrid protection components fully combine the classic GDT and MOV in a totally new design. This single-package solution provides a symbiotic relationship where the GDT blocks leakage currents through the MOV that would otherwise lead to premature failure of the MOV device. It also allows the MOV to prevent follow-on current after a surge that might damage the GDT.

Bourns® IsoMOV™ protectors offer:
  • High reliability and long life – including in certain harsh environments
  • Extended temperature range
  • Low leakage
  • Superior energy handling density
  • Graceful end-of-life failure mode
Boosting its design flexibility for engineers, IsoMOV™ protector surge ratings are comparable to the next larger size conventional MOV device. This gives designers the flexibility to select an IsoMOV™ protector that is smaller than the MOV option or upgrading to an IsoMOV™ protector of the same size to enhance the surge capability of their protection scheme.

Bourns® IsoMOV™ Series Hybrid Protection Component has been chosen for Passive Product of the Year by Electronic Products.


With IsoMOV™ protectors, designers can now get the right level of surge protection for their application without having to make any performance, size, cost or redesign compromises.

To learn more, we invite you to watch our IsoMOV™ hybrid protection series video. 

Contact Bourns today and let us show you how IsoMOV™ protectors solve your surge protection requirements.

Design Resources

Our technical library is full of helpful design resources that illustrate the many ways IsoMOV™ protectors can be used to enhance surge protection to meet various design requirements.

Bourns® Fully Integrated IsoMOV™ Hybrid Protector New Product Brief

Bourns® Innovative IsoMOV™ Protectors Solve MOV Degradation Issues

Innovative Hybrid Protective Device Provides Rugged, Reliable Circuit Protection Solution White Paper

Overcoming MOV Surge Life and Temporary Overvoltage Tolerance Issues

A New Universal AC Power Protection Approach White Paper

Find out about a new approach to AC power input protection that provides an option to integrate a robust, on-demand protection circuit.

Designing Effective Surge Protection for AC and DC Powered Systems Application Note

Selecting the Right Surge Protection for AC and DC Powered Systems

IsoMOV™ Hybrid Protection Component Data Sheet

The IsoMOV™ family of products includes three series: Model IsoM3, IsoM5 and IsoM8 that feature nominal surge ratings of 3 kA, 5 kA and 8 kA.

New Surge Protective Device Solves Circuit Protection Design Issues White Paper

How to Elevate Surge Protection Performance, Operational Life and Reliability

Specifying Bourns Surge Protection Components for UL/IEC 62368-1 Compliance White Paper

Learn how to satisfy challenging MOV requirements to meet UL/IEC 62368-1 product safety compliance.

Designing Effective Circuit Protection for RS-485 and RS-422 Applications White Paper

Learn about an advanced differential communication protection solution with low capacitance that allows maximum data rates and provides overcurrent protection as well as overvoltage protection.