Series CTH101L,

100x50mm Busbars
Series CTH101L Current Transformers


A range of compact moulded case current transformers suitable for primary currents up to 4000A with built in terminal covers.



For transforming various primary current into 5A or 1A standard secondary using upto 100 x 50mm busbars



  • Built in sealable terminal covers.
  • Base or busbar mounting.
  • Terminals suitable for screw or push on connectors.

Technical Specification

  • Conforms to IEC185, BS 7626, BSEN 60044-1, IEC 60044-1 and IEC 61869-2.
  • Rated system voltage 0.72/3kV.
  • Ambient temperature range -5°C to +50°C.
  • Self extinguishing to UL94HB.


Class 3 Class 1 Class 0.5
VA 5 10 15 5 10 15 5 10 15
600A C1 C2 C3 C4 C5 C7
800A D1 D2 D3 D4 D5 D6 D7 D8
1000A E1 E2 E3 E4 E5 E6 E7 E8 E9
1200A F1 F2 F3 F4 F5 F6 F7 F8 F9
1500A G1 G2 G3 G4 G5 G6 G7 G8 G9
1600A H1 H2 H3 H4 H5 H6 H7 H8 H9
2000A J3 J6 J9
2500A K3 K6 K9
3000A L3 L6 L9
4000A M3 M6 M9
1A secondary available by request.
Class 0.2S also available by request.Order Example: A moulded case current transformer type CTH101L,
with 5A secondary and 2500A primary 15VA class 1 is part number