The Encapsulated Chassis is designed for 12P (12-pole) configuration and has a 250 A tee-off feed. It features an 18 mm pitch and a withstand rating of Icw 25 kA/0.1s and 10 kA/1s, as well as an Icc rating of 30 kA. The chassis is made with 2 mm thick copper incoming terminals and a 1.2 mm thick galvanized iron base. It is coated with duravin SCI-TV, which makes it suitable for S200 breakers in the IA range IPD.