... act. 3.3 phase relay. DS907A 120A 3 phase latching relay Relay 120A ,double coils for Electrical Meter Specifiaction Contact Current120A/ ... .5Ω24VDC200Ω2x100ΩOrdering info DS907ARelay model A120A12VDTA,B,C,D,E etc. Connecting formTerminal type40A,50A,60A,70A ... B/L.West UnionUsage:Prepayment energy meter,AMR system,Compound switch,Power compensation devices,Smart meter(Smart grid)Latching Relay Models ...