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Question
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?
Answer
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.
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