CT400A | Hammond Manufacturing Transformers
CT400A | Hammond Manufacturing Transformers | KGA Enclosures Ltd

Product Price Breakdown
1+ £62.44
5+ £59.94
10+ £57.45
25+ £56.20
50+ £54.32
100+ £53.70
250+ £53.08
500+ £52.45
1000+ £52.14
2500+ £51.51
In Stock Prices shown excludes VAT
Product Information
Part No CT400A
Product Series CT Series
Current Ratio Pri. / Sec.400:5
Accuracy %0.6 - 1.2
Burden VA2 - 10
Dimension A121mm
Dimension B44mm
Dimension C108mm
Dimension D102mm
Dimension E56mm
Dimension F98mm
Mounting Slot 16mm
Mounting Slot 29mm
Ship Wt. Lb.1.8
RoHS Compliant Yes
REACH Compliant Yes
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CT400A | CT Series | Hammond Manufacturing Transformers | KGA Enclosures Ltd

CT Series - Current Transformer Indoor Toroidal
Product Information
How To Purchase Products
Customisation Services

Product Features
  • Toroidal design.
  • Supplied with 24" insulated secondary leads, terminated with crimped ring connectors.
  • Suitable for use with bare (uninsulated) primary conductor in circuits up to 600 V (4 KV Hi pot); or at higher voltages when a suitably insulated conductor is used.
  • All units have 5 A secondary for use with standard AC ammeters with 5 A movements.
  • Two hole mounting bracket on all models.
  • UL E227616 volume #1 file number X0DW2.
Application Data
  • To obtain current measurement:
    • Pass the wire carrying the current to be measured through the window of the CT transformer (acting as a primary winding).
    • Connect the CT secondary to an ammeter with a 5 A movement.
  • For higher accuracy or higher VA burden rating:
    • Choose a CT with a primary which is a multiple of the required primary rating and which has the accuracy or VA burden you require.
    • Loop the wire carrying the current to be measured through the window a number of times equal to the multiple. This "winding" will reduce the ratio back to required primary rating.