OT1B Contact Block by Eaton, Cutler Hammer or Westinghouse WESTINGHOUSE CONTACT BLOCK REAR CONNECTED 600 VAC MAX. 250 VDC MAX. FOR USE WITH PUSHBUTTONS ONLY CAT# OT1B STYLE# 450D818G15 New Surplus Inventory Code: E Make an Offer Send to a Friend WHSE Code: M9B4 Return To Misc Electrical Components and Parts