The TR25D4R2502TPE is a low-voltage main 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 main switch is suitable for operation in the utilization category AC-33B. The rated current is 250 A at 60 °C, with a frame size of 250 A. This device can be manually operated via a third-party control module. The switch features three contact positions on the front with mechanical and electrical indicators. It can be mounted on a DIN rail or a plate and positioned in a distribution cabinet. There are also some optional accessories available for various applications. This 4-pole version has a width of 370 mm, a height of 341 mm, and a depth of 185.8 mm. It complies with the IEC 60947-6-1 standard and is certified with CE, CB, and CCC. It is suitable for the power transmission of safety loads such as fire extinguishing systems, smoke extraction fans, sprinkler pumps, and emergency lighting.