ROP480 Relay by Hatch HATCH INCORPERATED REVERSE & OPEN PHASE RELAY TYPE ROP 480 VOLTS 60 HZ +10% U.F. 3 PHASE 3/4 WIRE NEGATIVE SEQUENCE VOLTAGE OPERATED RELAY CAT# ROP480 Reconditioned Inventory Code: B Make an Offer Send to a Friend WHSE Code: M6A1 Return To Misc Electrical Components and Parts