Plastic Case Mini Current Transformer

Our plastic case current transformers have the advantage of low current error (amplitude error) and phase shift. Plastic case and cast epoxy resin provide good protection to the coil inside. For different applications, we can provide DC immune current transformer or AC miniature current transformer. With more than 15 years’ experience, we can design and manufacture customized CT of complicated structures.


  • 40(400)A/8mA, Rb=10Ω, turns ratio 1:5000
  • Max current 400A, accuracy 0.1 class
  • ID=Φ23mm, OD=Φ59.5mm, H=21.4mm
  • PBT plastic case with epoxy resin filled inside
  • Used for heavy current measurement


Part NumberMT400-50A
DescriptionPlastic Case Mini Current Transformer
Structure Of WindingToroidal
Input / Output40(400)A/8mA
Max. Current400 A
Turns Ratio (typical)1:5000
Phase Shift Error5′ (20% Rated Current)
Burden (Rb)10 Ω
Accuracy Class0.1 Class
Core InsideNanocrystalline Core
EncapsulationBlue PBT Plastic Case with Epoxy Resin Filling
Busbar TypeNone
Mounting MethodThrough Hole
ApplicationMeters, Instruments
Accept CustomizedYes

Related Products

Plastic Case Mini Current Transformer
Tagged on: