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Howard Butler LTD is a UK manufacturer of instrumentation & control products such as current transformers, digital and analogue meters, transducers and protection relays. Howard Butler Ltd exports worldwide. We have been manufacturing in the UK since 1915 and employ over 100 people.

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Hobut is the UK’s largest manufacturer of its kind and has the capacity and experience to meet the needs of an increasingly demanding market.
As a leading British manufacturer Hobut employs more than 120 people and produces in excess of 40,000 current transformers each month and over 20,000 panel meters and other related products from its large UK factory in Walsall.

Hobut is the UK’s largest manufacturer of its kind and has the capacity and experience to meet the needs of an increasingly demanding market”.

Latest Products

M880 DMF DIN RAIL POWER METER

5 rectangular style moulded case current transformers in The new range of Hobut DIN rail mounting power …

CT132TRAN CURRENT SENSOR/ CURRENT TRANSDUCER

A range of current sensors / current transducers available with 0-5V / 0-10V DC self powered output or …

3 PHASE CT WITH INBUILT POWER METER

The C-Tran is combined 3 phase multifunction AC Power transducer and 3 phase current transformer …

CLIP TOGETHER PLUG-IN SHORT CIRCUIT

Our new Split Core current transformer features a unique plug-in short circuit link for safety. It is supplied …

EARTH LEAKAGE RELAYS

Variable Earth Leakage Relays in compact 35mm din rail mounting cases for use on 3 phase electrical systems …

MOULDED CASE RECTANGULAR CURRENT TRANSFORMERS

5 rectangular style moulded case current transformers in compact cases to suit a range of busbar sizes …

DOWNLOAD OUR PRODUCT Catalogues

Download PDF versions of our Current Transformer range and range review product brochures