The Encapsulated Chassis is designed for S200 breakers in the IA range. It has a 30P configuration and can handle up to 400 A of current. The chassis features top feed with an 18 mm pitch. It has a withstand rating of Icw 25 kA/0.1s and 10 kA/1s, as well as an Icc rating of 30 kA. The incoming terminals are made of 3 mm thick copper, while the base is made of 1.2 mm thick galvanized iron. The chassis is coated with duravin SCI-TV for added durability and protection.