OT1F Tandem Blocks by Eaton, Cutler Hammer or Westinghouse WESTINGHOUSE OT1 TANDEM BLOCKS REAR CONNECTED HEAVY DUTY 600 VAC, 250 VDC CAT# OT1F STYLE# 20B2973G02 New Surplus Inventory Code: Z+ Make an Offer Send to a Friend WHSE Code: M8C4 Return To Misc Electrical Components and Parts