CURRENT TRANSFORMERS

PANEL METERS

KILOWATT HOUR METERS

MULTI-FUNCTION METERS

EARTH LEAKAGE RELAYS

PROTECTION RELAYS

TRANSDUCERS

SELECTOR SWITCHES

SHUNTS

RAN

GE

REVI

EW

Manufacturers of ElectricalMeasurement and Control Products

EARTH LEAKAGE RELAYS& CORE BALANCE CTSA range of variable and fixed earth leakage relays incompact 35mm width din rail mounting cases. Thereis a dedicated range of core balance CTs from 35mm,50mm, 70mm, 120mm, 210mm, and largerectangular sizes. We also design and brand corebalance current transformers for other earth leakagerelay manufacturers.

PROTECTION RELAYSDin Rail mounting protection relays for use in singleand three phase systems. Over protection, underprotection and combined under/over protectionavailable in AC current, AC voltage and frequencyversions. Millivolt trip, DC voltage trip, reversepower, phase sequence, phase balance and othersare available.

TRANSDUCERSDIN Rail mounting measuring transducers to convertvarious inputs into standard DC signals, suitable fordriving meters and control equipment. AC current,AC voltage, frequency, reactive power, DC voltageand many more types available.

SELECTOR SWITCHES7 position voltmeter selector switches and 4 positionammeter switches for switching between phasecurrents and phase voltages.

SHUNTSShunts for DC applications to drive panel meters andfor use in control devices as overload protection.Brass ended, plate or wire types with 300mA –8000A input and 50mv-300mV output available.

THE PRODUCTS

Full product information at www.hobut.co.uk

THE PRODUCTS

MOULDED CASE CURRENT TRANSFORMERSA range of standard busbar sized & wound primary lowvoltage current transformers manufactured in small casesizes making the products amongst the smallestavailable in the market. Each CT features sealableterminal covers, and a range of accuracies includingclass3, class1, class0.5, class 0.5S class 0.2, class0.2S.Available to suit a range of busbars from 20mm busbarup to 125mm, with din rail mounding and footmounting available.

DIN PANEL METERSDIN panel Meters in 48x48, 73x72 or 96x96mm sizeswith 90 degree or 240 degree movements and scales.Avaialable with Moving iron or Moving Coil movementsfor AC or DC applications to measure amps, volts,frequency, watts, power etc. Maximum DemandIndicators and Combined Maximum Demand meters arealso available.

SPLIT CORE CURRENT TRANSFORMERSLow voltage current transformers for cable and busbarmounting. The growing global market for monitoringenergy makes these products ideal for retrofitting intoexisting networks and they are widely connected toenergy & power meters. Miniature moulded case andmulti-ratio resin cast versions are available in a range ofprimary currents up to 5000A.

RESIN CAST CURRENT TRANSFORMERSResin Cast CTs can be manufactured in any rectangularsize depending on the project. Used widely in Class Xand protection applications our engineers will designproducts specifically for projects and produce drawingsin advance for customer approval. Our flexible toolingmeans we can quickly produce to almost any size andspecification without any need for new tooling.

CUSTOM MADE CURRENT TRANSFORMERSRing Type, Resin Cast or Moulded Case for large volumeon an OEM basis, or small volume for project only basis.Our team of design engineers meet with clients todesign products according to their requirements. Thishas lead to a significant amount of our production beingdevoted to customer-specific designs. We designinjection mouldings and create tooling for individualcustomers and brand accordingly.

KILOWATT HOUR METERSKWh meters available in DIN panel mounting or DIN Railmounting versions. 1A or 5A current transformeroperated with options including analogue outputs,pulsed outputs, etc.

MULTIFUNCTION METERSLED and LCD Multifunction meters available with 1A,5A, or 333mV inputs. Plug in modules are available forpulsed output and RS485 output. Capable of measuringa wide range of electrical parameters. Special modelscan also be manufactured for measuring DC parameters.Modbus and Bacnet protocol are available.

DIGITAL PANEL METERSDigital Panel Meters with standard 96x48mm bezels and3.5digit LED display. Standard product range includesvolts, amps, frequency in both AC and DC ranges. Whencombined with a HOBUT transducer, parameters such askW and KVar can also be measured.

ANALOGUE PANEL METERSTraditional panel meters with upright scales. Retcangular,square and circular types are available in AC, DC orrectified AC measurements. Meters for square or circularcut-outs with class accuracies to suit the application.

Full product information at www.CurrentTransformers.co.uk

THE PRODUCTS

Full product information at www.hobut.co.uk

Howard Butler Ltd has been manufacturing in UK for 100years and is the largest manufacturer of its kind in UKemploying over 100 people, and exporting globally.

We manufacture more than 35,000 Current Transformers,and 20,000 panel meters and related products everymonth, and supply a wide range of markets includingelectrical distribution, utilities, panel builders, buildingmanagement, power generation and many more.

• Design/EngineeringWe have a team of specialist engineers who are regularlyadding new products to the range, mostly designed to IEC,BS or DIN specifications. Our continuous improvementprogram ensures established products are alwaysupdated.

• ProductionOur factories are equipped with the latest production andtest facilities. Comprehensive component stocks are heldto enable fast deliveries of standard and special products.

• QualityHOBUT products are manufactured to stringent QualityControl techniques and the company is approved to ISO 9001 certification.

• ServiceOur aim is to offer customer satisfaction and our fullycomputerised sales and manufacturing system ensuresclose control of all orders and enquiries.

• Special ProductsIn addition to our standard range, we work with many customers to designproducts to their specific requirements.

• World Wide WebFull product specifications, dimensional drawings and wiring diagrams canbe seen on our web site. Our site is constantly updated with new productinformation.

THE COMPANY

Tel +44 (0)1922 640003Fax +44 (0)1922 723626Email sales@hobut.co.uk

www.hobut.co.ukwww.CurrentTransformers.co.uk

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HOWARD BUTLER LTDCROWN WORKSLINCOLN ROADWALSALL WS1 2EB ENGLAND