I replaced this ASCO contactor two years ago because it was melted. The coil burnt and the contacts burnt. Two years later its burnt again. Last time I found nothing, amps OK, no sign of shorts. The only thing was that last time some sign guys were in there before me and I though maybe they let the smoke out, this time they were not, but I did find the out door dissconnect boxes and switches rusted away. I'm thinking that the water running off the sign is getting right into the boxes and shorting out the contactor? The coil is getting power form one of the same lines, maybe short circit amps killing the coil too? I dont see anything hooked up to this contactor that would draw anything close to what the contacts are rated for. I'm trying to avoid putting in another 600$ ASCO just to burn it up again.
