ITW Quencharcs are commonly used for noise and arc suppression, relay contact protection, noise reduction on controllers and drives and as RC snubber networks. They are also used for EMI/RFI reduction. Type QRL is UL/CSA rated. UL file number E33628 and CSA file number LR32208. Quencharcs are coated with a flame retardant epoxy. Other resistor and capacitor combinations are available as a special order.