ABB OT400U03 Disconnect Switch Brand: ABB. Part Number: OT400U03. ABB Disconnect Switch, Front Operated Non-Fusible Open, Series: OT Series, 1000 VAC, 400 A, 350 hp, 3 Pole, 65 kA Short Circuit, Surface Mount, Lug Terminal, 40 deg C, 221 mm H x 220 mm W x 85 mm D. Additional Description: ABB -OT400U03 3P SW 400A NF UL98 600V. Catalog Description: 3-pole, front operated, base mounted non-fusible diconnect switch, handle and shaft are not included, terminal bolt kit included..