Nothing about that cutout relay should be sparking. Try removing the cover so you can see what's going on inside- - - -its only function is a dust cover. Brand new cutout relays are on Ebay frequently, and they're not terribly expensive.
Jerry

"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln
Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!
There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self. - Ernest Hemingway
Love your enemies and drive 'em nuts!