The Ryefield 400PLCT is a Standard Insulated Busbar C/T Chamber that has an inner transparent inspection screen. This chamber has a sealable front cover. It allows testing of block and potential fuse units. It has a GRP enclosure to IP66 with removable bakelite bottom plate. It covers 400A CT Chamber and 100A Units without busbars. Its rated fuse short circuit is 50KA at 415V. The board's short time withstand has a current of 25KA per second. With the dielectric test, it has a current of 2.5KVper minute. Ryefield 400PLCT has 650mm height, 440mm width, and 250mm depth. For safe installation, it is highly recommended to hire registered electricians to install this board.