Bourns Introduces Transformative, Space-Saving Surge Protection Solution with its EdgMOV™ Varistor Series

In a single form-factor, EdgMOV™ varistors offer high surge capabilities in multiple model options letting designers reduce the size of, or enhance, their protection scheme

RIVERSIDE, Calif., January 3, 2024 - Bourns, Inc., a leading manufacturer and supplier of electronic components for power, protection, and sensing solutions, today introduced its advanced, space-saving EdgMOV™ varistor series that offers breakthrough surge protection performance in a space-saving design. Transformative in letting designers determine the size and level of surge protection for a given application, Bourns® EdgMOV™ varistor series is available in multiple model options, enabling designers to specify a higher surge rating with lower clamping voltage or the same surge rating with a smaller diameter protection solution. The additional flexibility afforded with EdgMOV™ disc varistors also lets designers select a higher MOV voltage, while maintaining the same clamping voltage, which, in turn, helps reduce the potential of MOV leakage current that is known to cause failures.

Offered in four model family sizes; 7 mm, 10 mm, 14 mm, and 20 mm, with nominal current ratings of 1.5 kA, 3 kA, 5 kA and 8 kA, respectively, EdgMOV™ disc varistors are designed to match common MOV footprints, allowing for drop-in replacement without any PCB redesign. Bourns® EdgMOV™ varistors deliver comparable surge ratings of the next larger size of conventional MOV components. For example, a 10 mm Bourns® EdgMOV™ surge protector is rated for 3 kA nominal current (15 operations), which is comparable to a current typical 14 mm standard MOV (typically also rated at 3 kA nominal current). Conversely, if a designer is looking to increase primary protector performance without increasing its size, a similarly-sized EdgMOV™ protector can be selected to replace the existing MOV, providing enhanced performance in the same package size. Another advantage is that the coating material used is rated for use up to 105 °C, which is higher than the standard 85 °C. UL requires components that are rated higher than 85 °C to undergo 1000 hours of an aging test, helping to increase maximum equipment lifespan for end users.

The Bourns® EdgMOV™ disc varistor series is available now. These models are RoHS compliant* and halogen free**. For more detailed product information, please see:

*RoHS Directive 2015/863, Mar 31, 2015 and Annex.

**Bourns considers a product to be "halogen free" if (a) the Bromine (Br) content is 900 ppm or less; (b) the Chlorine (Cl) content is 900 ppm or less; and (c) the total Bromine (Br) and Chlorine (Cl) content is 1500 ppm or less.

About Bourns

Bourns, Inc., is a leading manufacturer and supplier of position and speed sensors, circuit protection solutions, magnetic components, microelectronic modules, panel controls and resistive products. Headquartered in Riverside, California, USA, Bourns serves a broad range of markets, including automotive, industrial, consumer, communications, non-critical life support medical (low/medium risk), audio and various other market segments. Additional company and product information is available at

Bourns® and the Bourns logo are registered trademarks of Bourns, Inc. and may be used only with the permission of Bourns and proper acknowledgement. Other listed names and brands are trademarks or registered trademarks of their respective owners.

Bourns® products have not been designed for and are not intended for use in "lifesaving," "life-critical" or "life-sustaining" applications nor any other applications where failure or malfunction of the Bourns® product may result in personal injury or death. See Legal Disclaimer Notice

Agency Contact:
Annette Keller
Keller Communication
Company Contact:
David Scofield
Bourns, Inc.
(951) 781-5054