WA4EAR43B3SXXXXXXA Breaker by Square D SQUARE D MASTERPACT LOW VOLTAGE POWER CIRCUIT BREAKER 3 POLES 1600 AMP FRAME/CAP. 635 VAC WITH MICROLOGIC 5.0 A LSI TRIP UNIT CAT# WA4EAR43B3SXXXXXXA Make an Offer Send to a Friend Return To Circuit Breakers