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Current Transformers

Current transformers make it possible to measure high current values and indicate these using instruments of a much lower rating. Owing to high costs in cable we recommend the use of a CT for the current measurement above 40A (unless otherwise specified).

When choosing a current transformer it is important to not only check the dimensions are suitable but also to check the accuracy class and burden required. You wll need to also consider the run of cable between the instrument and CT, size of the cable and the burden required which the instrument will consume. We have an extensive range and can accomadate most applications.

 

Model: M53J
Product Features:25mm² Aperture30mm x 10mm Busbar Aperture25mm x 15mm Busbar Aperture20mm x 20mm Busbar Aperture100-400A Primary CurrentSecondary M4 Screw TerminalsAccuracy Class 0.5, 1 or 3Busbar or DIN Rail MountedThe M53J Range of Solid Core Current Transformers from Crompton Instruments work in ..
£8.30
Model: M53Q
Product Features:21mm² Aperture20mm x 6mm Busbar Aperture50-300A Primary CurrentSecondary M4 Screw TerminalsAccuracy Class 0.5, 1 or 3Busbar or DIN Rail MountedThe M53Q Range of Solid Core Current Transformers from Crompton Instruments work in conjunction with any 5A CT Operated Electricity Meters. ..
£7.70
Model: M63N
Product Features:32mm² Aperture40mm x 10mm Busbar Aperture200-800A Primary CurrentSecondary M4 Screw TerminalsAccuracy Class 0.5, 1 or 3Busbar or DIN Rail MountedThe M63N Range of Solid Core Current Transformers from Crompton Instruments work in conjunction with any 5A CT Operated Electricity Meters..
£11.60
Model: M93L
Product Features:42mm² Aperture50mm x 10mm Busbar Aperture40mm x 30mm Busbar Aperture400-1000A Primary CurrentSecondary M4 Screw TerminalsAccuracy Class 0.5, 1 or 3Busbar or DIN Rail MountedThe M93L Range of Solid Core Current Transformers from Crompton Instruments work in conjunction with any 5A CT..
£16.40
Model: CT325
The CT325 is a new design moulded case three phase current transformer.They offer easy installation and cost saving compared to single phase current transformers. They come complete with  hinged terminal covers and built in foot mounting bracket. 3 x apertures at 15.5 x 30mm Primary cu..
£23.50
Smart Process - CT335 Three Phase Current Transformer - 100-250A
New Custom Labels
Model: CT335
The CT335 is a new design moulded case three phase current transformer.They offer easy installation and cost saving compared to single phase current transformers. They come complete with  hinged terminal covers and built in foot mounting bracket. 3 x apertures at 21x25mm Primary curren..
£21.50
Model: CT345
The CT345 is a new design moulded case three phase current transformer.They offer easy installation and cost saving compared to single phase current transformers. They come complete with  hinged terminal covers and built in foot mounting bracket. 3 x apertures at 31x31mm Primary curren..
£23.50
Model: M3N1-25
Product Features:14.5mm x 24.5mm Aperture60-160A Primary CurrentSecondary M4 Screw TerminalsAccuracy Class 0.5, 1 or 3Busbar or DIN Rail MountedThe M3N1 Range of 3-in-1 Current Transformers from Crompton Instruments combine three traditional Current Transformers into one moulded case. These can be d..
£27.80
Model: M3N1-35
Product Features:35mm Centres20.5mm x 24.5mm Aperture100-250A Primary CurrentSecondary M4 Screw TerminalsAccuracy Class 0.5, 1 or 3Busbar or DIN Rail MountedThe M3N1 Range of 3-in-1 Current Transformers from Crompton Instruments combine three traditional Current Transformers into one moulded case. T..
£24.70
Model: M3N1-45
Product Features:30.5mm x 30.5mm Aperture250-600A Primary CurrentSecondary M4 Screw TerminalsAccuracy Class 0.5, 1 or 3Busbar or DIN Rail MountedThe M3N1 Range of 3-in-1 Current Transformers from Crompton Instruments combine three traditional Current Transformers into one moulded case. These can be ..
£27.80
Model: SCTK35
The SCTK35 is a split core current transformer made to the highest quality, it has a 35mm diameter aperture and suitable for retro-fit applications. Availible primary ratios:100,150,200,250,300,400,500 and 600A Internal diameter aperture 35mm 5A secondary Accuracy 0.5,1 and 3 depending on the ..
£25.00
Model: T24
The T24 is a split core current transformer made to the highest quality, it has a 24mm diameter aperture and suitable for retro-fit applications. Availible primary ratios: 100, 150, 200 and 300A Internal diameter aperture 24mm 5A secondary Accuracy 0.5,1 and 3 depending on the load..
£25.00
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