This is a 5-pin SPST 1 Form A relay. This has a cover on it, not pictured. This relay is obsolete and will be phased out in the future, but we will use this part# as a reference for other possible 18 VDC relays and will note the manufacturers in the sales column.
Coil Voltage 18VDC
30A Contact Rating
Manufacturer: TE Connectivity / Potter & Brumfeld