ABB T3S-D 225A 3PH Molded Case Circuit Breaker is a three‑pole Molded Case Switch (MCS) in ABB SACE’s Tmax family, designed to provide general protection and isolation in distribution boards and sub‑switchgear. This UL/CSA‑listed device is rated for 480 VAC or 500 VDC operation, with an interrupting capacity of 65 kA at 240 VAC and 35 kA at 480 VAC, and an instantaneous magnetic trip rating of 2,250 A for the 225 A frame (the 150 A frame being 1,500 A). Catalog variants in this family include T3S225DW, representing the 225 A, 3P version in the T3S‑D lineup.
