Siemens 6ES5454-4UA12 Analog Input Module for S5

Siemens 6ES5454-4UA12 is a SIMATIC S5 digital output module with 16 floating 24 V DC outputs rated at 2 A per channel, designed as a compact version U for S5-135U/155U/H style racks. Each channel switches DC loads such as relays, contactors, lamps, or solenoids, and the floating outputs provide electrical isolation from the common return, helping to simplify wiring and reduce ground loops. The module is intended to extend the discrete output capability of older S5 installations, fitting the standard backplane and enabling compact, centralized control of multiple devices from a single module. As part of the 454 family, the 6ES5454-4UA12 specifies 16 outputs, 24 V DC operation, and 2 A per output, offering a compact 16‑bit expansion for demanding industrial control tasks.