Latest Products

M880-DMF DIN Rail Power Meters

The new range of Hobut DIN rail mounting power meters feature seven selectable colour backlight LCD screens. The range is easy to use and features user-programmable CT & VT ratios that can be used on any single or 3 phase system.

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CT132Tran Current Sensor/ Current Transducer

A range of current sensors / current transducers available with 0-5V / 0-10V DC self powered output or 4-20mA loop powered output.

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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 in a moulded case with 1 metre double insulated flying lead and bootlace ferrule terminations.

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3 Phase CT with inbuilt Power Meter

The C-Tran is combined 3 phase multifunction AC Power transducer and 3 phase current transformer.
The C-Tran is fully programmable through either of the two communication ports

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Earth Leakage Relays

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

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Moulded Case Rectangular Current Transformers

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

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

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Latest news

Manufacturing world cup

It’s World Cup time! Sweep stakes drawn, flags at the ready and patriotism set to the max. The world’s favourite tournament is well under way and we’ve seen some tantalising matches already with VAR being used and it’s great to see how technology is being incorporated in this fast-moving game. It got us thinking here… Read More »

A Guide to Preparing for GDPR for Small and Medium Businesses

What is GDPR? What are the requirements of being GDPR compliant? What should my company be doing to prepare for the GDPR? The Business Implications of Failing to Comply with GDPR! What is GDPR? On 25 May 2018, the General Data Protection Regulation (GDPR)  will be enforced across Europe, including the UK. The law aims to… Read More »

How Can The UK Address The Productivity Gap?

What is the ‘productivity gap’? A productivity gap or sometimes referred to as the “productivity puzzle” is the difference between one county’s productivity levels, as measured by output per workers or output per hour worked, in comparison with the country’s main export competitors. According to the Office For National Statistics, the UK is falling behind… Read More »

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