Schneider Electric 199ADX-4 Relay

Schneider Electric's 199ADX-4 is a high-current power relay in the 199 Series, offering a single Form A SPST-NO-DM contact configuration and a robust build for industrial control panels. The relay is driven from a 120 VAC coil and presents a coil resistance of roughly 290 ohms, allowing reliable actuation from standard control logic. It is rated for resistive switching up to 40 A at 300 VAC (50/60 Hz) and supports a maximum switching voltage up to 600 VAC, with silver-alloy contacts and a blowout magnet to suppress arcing during opening. The DM (double-make) design helps ensure positive contact engagement, making the 199ADX-4 a solid choice for applications like motor starters, heating elements, and other high-current loads where compact, relayed control is required.