Current Transformers

Current Transformers

SHM MeterShop stock a wide range of current transformers in both moulded case and split core types with 1 Amp or 5 Amp secondaries.  330mV output CTs are available for use with Northern Design "V Series" meters.

SHM find that CT are freqently incorrectly installed. In order to help avoid these problems, please have a look at Br Right First Time.

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    The Circutor WGC Range of Earth Leakage Current Transformers are specifically designed for use with the RGU Series of relays.

    They are specially designed to be immune to transients to avoid false tripping.

    Please select the required internal diameter below.

    • £84.44
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    Moulded Case Current Transformers with 5A secondary. Available in ratios of 50:5A, 100:5A, 200:5A, 300:5A

    • £8.10
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    Split-Core current transformers with in-built terminal covers. 50x80mm aperture. Primary current ranges from 300 to 1000A with 5A secondary.

    • £29.70
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    Split Core Current Transformers with 5A secondary. Available in ratios from 100:5A to 800:5A. 40mm dia aperture.

    • £24.00
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    Hobut Micro19 Compact Split Core CT’s with 1m flying lead, 100:5A.

    • £26.50
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    Hobut Micro19 Compact Split Core CT’s with 1m flying lead, 200:5A.

    • £26.50
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    The SCT rnage of retro-fit current sensors are manufactured for use with ND meters with 0.33Vac inputs. They offer fast and easy installation without the need to disconnect any loads - ideal for retro-fit Energy Management Systems. Available with primary currents of 150, 400 and 800 Amps.

    • £29.75
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    The SCL series of retro-fit current sensors are manufactured for use with ND meters with 0.33Vac inputs. They offer fast and easy installation without the need to disconnect any loads - ideal for retro-fit Energy Management Systems. With a safe low voltage output, there are no worries about open-circuiting CT secondary circuits.

    • £28.00
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    SHM 250:5A Compact Split Core Current Transformer for use with insulated cables. Fast and simple installation with 5A output and Class 1 accuracy.

    • £53.25
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    SHM Click'n Go, Class 1 Compact split-core current transformers with extended 42mm x 85mm aperture, ideal for use in tight spaces. Available in ratios of from 400:5A to 1000:5A Fast and simple current measurement with one 'click'.

    • £96.82
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    SHM Click'n Go, Class 1 Compact split-core current transformers for cables up to 18mm dia. Available in ratios 100:1A, 125:1A Fast and simple current measurement with one 'click'.

    • £42.30
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    SHM Click'n Go, Class 1 Compact split-core current transformers for cables up to 18/28mm dia. Available in ratios of 200:5A, 250:5A, 500:5A Fast and simple current measurement with one 'click'.

    • £42.30
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    SHM Click'n Go, Class 1 Compact split-core current transformers with extended 42mm x 43mm aperture, ideal for use in tight spaces. Available in ratios of from 400:5A to 1000:5A Fast and simple current measurement with one 'click'.

    • £62.10
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    SHM CTV Power Sensor - a 16:1A current transformer with fused terminal. The new alternative for stand-alone current transformers and fused terminals.

    • £38.40
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    SHM CTV Power Sensor. a 35:1A current transformer with fused terminal. The new alternative for stand-alone current transformers and fused terminals.

    • £38.40
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    SHM CTV Power Sensor - a 64:1A current transformer with fused terminal. The new alternative for stand-alone current transformers and fused terminals.

    • £38.40
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    SHM Click'n Go, Compact split-core current transformers for cables up to 18mm dia. Available in ratios of 60:1A, 100:1A, 150:1A, 200:1A Fast and simple current measurement with one 'click'. Special price for packs of 3 or more.

    • £37.80
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NEW on the SHM shop – 96x96 or 72x72 meters can be bought with Plastic or Steel enclosures. Contact SHM if you need more than 1 meter in the panel.
All meters used for billing in the EU must be MID Approved. Find out what the Measuring Instruments Directive means to you.
SHM frequently find that CT are miswired when troubleshooting installations. This document might help you to install CT correctly.