Howard Butler Ltd is one of the largest UK manufacturers and suppliers of panel meters, shunts and associated products.  The company has been manufacturing in England for over 85 years and has built up a reputation for quality products.

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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.

    • £26.00
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    Hobut Micro19 Compact Split Core CT’s with 1m flying lead, 200:5A.

    • £26.00
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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.