Square D 8501XDO20 Control Relay

Square D 8501XDO20 is a NEMA Type X control relay with two Form A contacts (DPST‑NO) designed for machine‑tool and general industrial control where a compact, two‑pole relay is used to switch AC loads. The base device provides up to 10 A resistive at 600 VAC on its two normally open contacts, with a DC rating of 5 A for DC loads. The 8501XDO20 family is available in multiple DC coil voltages to suit common control voltages, including 24 VDC (8501XDO20V53), 115/125 VDC (8501XDO20V62), and 230/250 VDC (8501XDO20V66). Each variant preserves two Form A (2NO) contacts and the 10 A resistive at 600 VAC load rating. This line is part of Schneider Electric’s Square D relays used for energizing equipment, interlock and sequencing tasks in control panels, and other automation applications requiring a compact, normally‑open two‑form‑A relay. When selecting a variant, match coil voltage to the control circuit to ensure reliable operation and proper coil power handling as specified by the coil code.