Square D
Circuit Breaker 
Cat # MHL3690040DC
900 Amp
3 Pole
600 Volt DC Maximum
500 Volt DC Nominal
Interrupting Rating:
  • 20kA @ 500 Volt DC
For Use on Ungrounded Systems Only

Line & Load Side Lugs

Used Electrically Okay
 

(Loc: B6B4)