Page top


Omron uses cookies to improve your experience on this website. By continuing to use the website, you hereby agree to our Privacy and Cookie Policy

Lead Contents

General-purpose Relay: Causes of Damaged Relay Contacts

FAQ No. FAQ02781

Primary Contents


We were using G2R General Purpose Relay to turn a solenoid valve ON and OFF, and sparks at the contact damaged the relay after only about 3 months of use. What caused this, and what kind of countermeasure is there for it?


It's possible that a surge resulted from reverse voltage. This speeds up the deterioration of the contacts. Try inserting a surge suppressor in parallel with the load.