CB-18878:
ONE (1) 4000 AMP SQUARE D MASTERPACT INSULATED CASE CIRCUIT BREAKER
TYPE NW40H2
CAT. #YA555R44A3SXFXXXXX
50/60 HERTZ
85 KA INTERRUPT
4000 AMP RATING PLUG
MICROLOGIC 6.0 A - LSIG
S/N 085006080601