Nader NDP1A series concealed distribution box is applicable to indoor AC 50Hz or 60Hz, rated working voltage 220V to 440V, generally not exceeding 35 ℃ and occasionally reaching 60 ℃. It is used to provide protection for circuit breakers, switches, sockets and other electrical accessories against. Nader Miniature Circuit Breaker (MCB): AC voltage from 230V to 415V, DC voltage from 60V to 1200V; Current from 1a to 125A; The number of poles includes 1P, 1P + N, 2P, 3P, 3P + N, 4P; Many series have CCC, CE, TUV, UL, SAA certification. MCB is mainly used in 5G communication (NDB6AZ-63 Series.