The 6-1393118-6 is a Potter & Brumfield KUP Series panel plug-in relay designed for general-purpose industrial and commercial applications. It supports DC coils ranging from 5 to 110VDC and AC coils from 12 to 240VAC at 50/60 Hz, with contact arrangements available in 1 to 3 form C configurations. The relay features Class B coil insulation, dielectric strength of 1200Vrms between open contacts and 2200Vrms between contact and coil, and initial insulation resistance of 100MO at 500VDC. Operating temperature range is -45°C to 70°C for DC coil enclosed relays and -45°C to +45°C for AC coil enclosed relays. The relay is available with multiple mounting options including panel, DIN rail, and PCB mounting, with quick connect or PCB terminals, and optional push-to-test buttons and indicator lamps. It is widely used in vending machines, commercial sewing equipment, robotics, welding systems, HVAC controls, and medical devices.