Square D 8501DO20 General Purpose Industrial Relay

The Square D 8501DO20 General Purpose Industrial Relay is a 120 V AC coil relay from Square D (Schneider Electric) designed for general‑purpose control in industrial panels. Classified within the 8501 family as an AC control relay, the 8501DO20 is used to switch loads in control circuits driven by a 120 VAC coil. Some distributor listings identify this model as discontinued by the manufacturer, reflecting its status as a legacy component in contemporary catalogs. This relay supports common general‑purpose control tasks in older Square D installations and other equipment designed to operate with Square D 8501 series relays using a 120 V control signal. When sourcing a replacement, verify compatibility with your existing control circuit and any socket or mounting accessories from compatible 8501 family components.