Schneider Electric 8501 NR42 16Q2CD024 Relay Module

Schneider Electric's Harmony 8501NR42 is an 8‑pin white plug‑in relay socket designed to accept miniature Harmony 8501R relays, enabling quick replacement in control circuits. The socket features double‑tier screw clamp terminals and supports DIN rail or panel mounting, making it versatile for control panels, machines, and automation enclosures. It is rated for up to 10 A at 300 V AC, providing reliable switching for general‑purpose logic and control tasks when paired with compatible 8501R relays. The 8501NR42 works with the Harmony 8501R family (including 8501RS and 8501RSD42 relays), which are designed for plug‑in installation into this socket to simplify maintenance and field replacement. Relays in the 8501R family offer configurations such as DPDT contacts and a range of coil voltages depending on the specific coil variant, allowing engineers to select the appropriate coil for their control voltage.