I/O complement and relay ratings
The 6ED1055-1MB00-0BA1: Four digital inputs accept 12 V DC or 24 V DC (permissible range 10.8 V to 28.8 V DC). The signal '1' threshold is above 8.5 V with a typical input current of 1.5 mA; signal '0' is below 5 V DC. Four relay outputs are rated 5 A resistive (5 A at signal '1' rated value) and 3 A inductive. Lamp load maximum is 1 000 W. There is no short-circuit protection on the outputs. The input-to-output transition times are 1.5 ms for both 0→1 and 1→0 edges, which is fast enough for most discrete logic in LOGO! applications.
Mounting, approvals, and environmental limits
The enclosure is IP20 — suitable for a clean, dry control cabinet only, not for washdown or outdoor placement. Ambient operating range is 0 °C to 55 °C. The module carries CE, UL, CSA, FM, and marine approvals, and is developed per IEC 61131. It is also rated limit class B for residential-area use (EN 55011).