RELIANCE SPR-2214-3 Relay Module

RELIANCE SPR-2214-3 Relay Module is a legacy relay output module used in industrial automation, with an alternate listing under RELIANCE ELECTRIC as SPR-2214-3 MODULE SPR22143. This module functions as an interface between a programmable controller and external circuits, providing relay contacts to switch loads in response to controller outputs. The SPR-2214-3 designation places it in a family of vintage RELIANCE and Reliance Electric components that were commonly installed in backplane-based control cabinets. In typical installations, it enables discrete control of devices such as actuators, solenoids, indicators, and other field devices by energizing internal relays in response to control signals. The accompanying SPR22143 variant likely denotes an equivalent or cross-referenced part number used for cataloging and repair in legacy systems. This module is sought by technicians maintaining or restoring older automation lines, where matching the specific backplane, connector, and mechanical footprint is essential for proper fit and function. Cross-reference information supports finding compatible spares within historical catalogs and documentation maintained by the original equipment manufacturers. By identifying the SPR-2214-3, technicians gain a clear reference point for sourcing parts or verifying compatibility when diagnosing control-system symptoms tied to relay outputs in aging automation infrastructure.