Phoenix Contact 1025400 A bus bar designed specifically for use with TMC 73 circuit breakers features a two-phase configuration and an auxiliary switch, accommodating up to 48 positions with a 17.8 mm pitch. It is capable of handling both AC and DC voltages up to 600 volts, while being rated for 80 amps in end-feed applications, making it UL 508 listed for connection to UL 1077 rated circuit breakers.