The relays come standard with a test button and indicating LED, and a free wheeling diode is optional for DC coil versions. RPY relays can be mounted directly to a printed circuit board, to a panel with optional top or side flange mounts, or with the use of an optional ZPY socket on a 35mm DIN rail. The 1-pole changeover relay can switch up to 16 Amps AC or DC per pole, while the 2-, 3- and 4-pole relays can switch 10 Amps AC or DC per pole. Carlo Gavazzi Automation Componentswww.GavazziOnline.com847.465.6100