Found 6 alternatives for EMC-03 by CUI Inc.. Power Line Filter Modules — Tube.
DC-DC FILTER, EMC 0~80 VDC INPUT
AC-DC FILTER, 20 DB, 85-305 VAC
LINE FILTER 75VDC 10A TH
20 WATT RIA12 SURGE FILTER, RAIL
300 WATT RIA12 SURGE FILTER, RAI
150 WATT RIA12 SURGE FILTER, RAI