LT Switchgear: The term LT (Low Tension) Switchgear includes low voltage Circuit Breakers, Switches, off load electrical isolators, HRC fuses, Earth Leakage Circuit Breaker, Miniature Circuit Breakers (MCB) and Molded Case Circuit Breakers (MCCB), Air Circuit Breaker (ACB) etc i.e. all the accessories required to protect the LV system.