Dual RCD Insulated unit 8+7 split configuration. Features: 100A Main Switch; 2 x 80A 30mA RCDs; Accommodates Wylex NSB MCBs; Compliant for the 17th Edition Wiring Regulations. Specifications: 100A Main Switch & 2 x 80A RCD 230V 30mA AC. W x D x H: 435