1.Type CBT distribution boards are designed to accept any combination of 50 single pole,double pole,triple pole MCB's and RCBO's *Type CBT distribution boards are designed to accept any combination of 50 single pole,double pole,triple pole MCB's and RCBO's(MCB/RCD'S)*Modular capacities of CBT distribution boards are listed in terms of maximum triple MCB ways. Thus, a four way board will accept: 4 ...