Schneider Electric 30617-593-50 ROM271 Module

Schneider Electric’s Square D SY/MAX ROM271 is a 16-function isolated relay output module (Class 8030 ROM271) built for SY/MAX 8030 backplanes in legacy Model 400 PLC systems. Catalog number 30617-593-50 and Series B1 identify this module as a 16-channel relay output card designed to provide isolated relay actuation for external devices, with a 5 V DC drive level and a current draw of about 900 mA. As part of the SY/MAX ROM family, ROM271 slots into appropriate SY/MAX backplanes to switch external loads via isolated relays, making it suitable for signaling, interlocking, or general-purpose relay control in industrial automation environments. This module is commonly found in refurbished or surplus inventories from multiple retailers, reflecting its long-standing role in legacy Square D SY/MAX installations.