The Omron H3CA-A-314 is a programmable multi-function time delay relay from the H3CA series, socketable with an 11-pin octal base. It switches a single SPDT (1 Form C) mechanical relay contact rated at 3A @ 250VAC. The delay range spans 0.1 second to 9990 hours, set via thumbwheel switches, and the timing is initiated by applying the input voltage.
Supply and contact ratings
Supply voltage accepts 24-240VAC or 12-240VDC, so it works across control voltages common in both North American and European panels without needing a separate power supply module. The 3A @ 250VAC contact rating handles pilot duty, small contactor coils, and signal loads — not motor starting, but fine for the control circuit side.