TA10D4S0404TPE is an automatic power transfer switch used in industrial and commercial buildings, data centers, healthcare facilities, and transportation. The rated operating voltage is 400 VAC at 50/60 Hz. This power switch is suitable for operation in the usage category AC-33B. The rated current can handle 40 A at 60 °C, with sizes ranging from 32-100 A. On the front, there is a built-in display module that can be used for local control and settings via rotary/dip switches. This switch features three switch positions on the front with mechanical and electrical indicators. It can be mounted on a DIN rail or panel and positioned in an electrical distribution cabinet. There are also some optional accessories available for various applications. This 4-pole version has dimensions of 306 mm (width) x 145 mm (height) x 94.5 mm (depth). It complies with the IEC 60947-6-1 standard and is certified by CE/CB/CCC. It is suitable for power transmission of safety loads such as fire extinguishing systems, smoke extraction fans, sprinkler pumps, emergency lighting, etc.