8 inputs, 4 relay outputs, 24 V UC — panel-fit on 4 TE
The Siemens LOGO! 24RC 6ED1052-1HB00-0BA3 is a compact logic module with an integrated display, designed for small-scale automation tasks that don't need a full PLC rack. It packs 8 digital inputs and 4 relay-rated outputs into a 72 mm wide housing (4 spacing units), snapping onto 35 mm DIN rail. The supply is universal — it accepts both 24 V AC and 24 V DC — so you can drop it into a panel running either control voltage without a separate power supply swap.
Relay outputs rated 10 A resistive, 3 A inductive
The four relay outputs handle up to 10 A with resistive loads and 3 A with inductive loads — enough to directly switch small contactors, solenoid valves, or indicator banks without an interposing relay. Note that the module has no built-in short-circuit protection on the outputs; external fusing per channel is required, so budget for a fuse block or mini-breaker per output circuit in the panel layout.
80-hour power reserve keeps the program alive
An 80-hour power reserve holds the program and retentive data during a line outage — useful for maintaining machine state across a shift break or weekend shutdown without a battery-backed RAM. The module is developed per IEC 61131 and carries CE, UL, CSA, FM, and marine approvals, so it qualifies for industrial, commercial, and shipboard panels across most jurisdictions.