Schneider Electric 8501RSD42V51 Time Delay Relay

Schneider Electric's Square D 8501RSD42V51 is a miniature plug‑in relay (Type R) with DPDT contacts (2 Form C) designed to drop into a matching 8501NR42 socket for quick panel installation. The coil is 12 V DC, enabling compact control in automation circuits, with two poles offering normally open and normally closed paths. Load ratings include up to 10 A at 240 VAC and up to 15 A resistive at 120 VAC, with supported load profiles including up to 1 HP at 277 VAC for appropriate applications. This general‑purpose relay is UL‑recognized and CSA‑listed and plugs into compatible Square D sockets such as the 8501NR42/8501NR42B, making it a common choice for control circuits in industrial equipment.