Square D Harmony 8501NR5 is an 8-pin octal relay socket designed to accept Square D 8501R plug-in relays; the gray enclosure is rated for up to 300 VAC and 10 A, making it suitable for general-purpose control circuits in industrial panels. It uses screw-clamp terminals for secure wire connections and supports mounting on 35 mm DIN rails or on panels, providing flexible installation in control cabinets. As part of the Square D Harmony family, this NR5 socket offers a reliable, field-swappable mounting platform for 8-pin relays in automation applications, enabling quick relay changes without rewiring.
