Power Circuit Breakers

for safety and protection

News Archive

News Archive

We hear you!

We have asked registered users for their feedback on the TemCurve Lite software. Some people complained that it was difficult to download.

We have removed the registration form from TemCurve Lite download. You may now download it without registration.

Overall we received positive feedback with some good suggestions which we will take in to account.

For those of you who would like to receive Terasaki updates we have added a registration form on our news page. Subscribe and be the first to receive our news.

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How to Select and Set Circuit Breakers for Generators

Generators differ from other electrical power sources in their ability to withstand electrical overloads and fault currents. These differences should be respected when selecting and setting circuit breakers which protect generators.

Terasaki have prepared a designed guide that explains the parameters of generators and circuit breakers which should be considered when selecting and setting circuit breakers which protect generators.

Download "Why the Protection of Generators Needs Special Consideration" Paper
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Terasaki welcome customers in our factory!

What is the best way to choose a supplier? Go and see them yourself!

Terasaki is always happy to welcome customers:

  • we will show our factory,
  • do a presentation of our products,
  • you will meet Terasaki personnel and see yourself what we do to guarantee high quality products and fast service.

Terasaki Presentation Terasaki Electrical Testing Area

Product Presentation by Terasaki

Testing process viewing by Terasaki visitors

We will also make sure that you enjoy your visit to Glasgow:

  • we will prepare a suitable sightseeing program for you:
  • a trip to Edinburgh,
  • visiting most spectacular Glasgow places or seeing Scotland's second famous manufacturing (after Terasaki): Scotch Whisky.
  • Our colleagues will accompany you as well (if you wish to of course).

Drummer in Edinburgh by This Is Edinburgh Kelvingrove Art Gallery Glasgow

Drummer by "This is Edinburgh"

Kelvingrove Art Gallery by "People Make Glasgow"

To arrange a visit to Terasaki Glasgow factory.

Contact Us
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Hannover Messe 2019 – Come Visit Our Stand

We are once again exhibiting at the upcoming Hannover Messe exhibition, in Hannover, Germany. We would like to invite you to visit us at our stand (Hall 12 Stand D81).

The Terasaki stand will be open: 09:00 - 18:00 on 1st - 5th April 2019. Feel free to visit and discuss our products.

You can also join us on the stand from 17:00 - 18:00 each evening for a drinks reception and whisky tasting!

Download Hannover Messe 2019 Invite

Short of Time to Upgrade Switchgear?

Thousands of low-voltage switchboards in GCC countries could be upgraded in a matter of hours with Terasaki Retrofits. Together with overheating protection this can significantly improve the safety and reliability of switchgear. Find out how at ADIPEC 2017. We are delighted to invite you to join us on THE VEETECH INSTRUMENTATION AND CONTROL SERVICE stand (stand number 1370) from Monday 13th to Thursday 16th of November.


You can upgrade obsolete switchgear with no impact on business continuity using Terasaki retrofit circuit breakers. 

Terasaki Retrofit for Merlin Gerni Selpact 3200A

Ask for a demonstration of our Terasaki retrofit solution which replaces Merlin Gerin Selpact 3200A.

We hope you will join us there and find out more about our other developments, including:

Overheating is the commonest cause of failure in switchgear. A thermal management system is the best method of identifying potential future failures. Continuous overheating protection minimises the need for invasive maintenance and improves the integrity of critical assets.

Read 3C Leaflet
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Terasaki Exhibitions 2018

You will be able to see Terasaki exhibiting in the following event:

  • 6 - 8 March
  • Dubai World Trade Centre
  • Transmission and Distribution Zabeel Hall 3
  • Seminar on
  • Tuesday 6 March 12:00
  • 21-22 March
  • ExCel London
  • Stand D822
  • Brand new product displays
  • 23-27 April
  • Hannover, Germany
  • Happy Hour
  • Every Day
  • 17:00

Our technical experts will be available at each show to guide you through our solutions. We will show our 3C overheating protection, monitoring solutions and will present our Retrofit solution in detail at special seminar during MEEE.

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Terasaki Exhibitions 2017

Terasaki have great solutions for:


Find out more when you visit us at the following exhibitions next year:

  • 14 – 16 February
  • Dubai World Trade Centre
  • Transmission and Distribution Zabeel Hall 3
  • Seminar on
  • Tuesday 14 February 17:00
  • 15-16 March
  • ExCel London
  • Stand C60
  • Brand new product displays
  • 24-28 April
  • Hannover, Germany
  • Happy Hour
  • Every Day
  • 17:00

Our technical experts will be available at each show to guide you through our new solutions. We will present 3C overheating protection in detail at special seminar events during the shows

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New TemCurve Selectivity Software Now Available

Terasaki has launched version 3.0 of TemCurve selectivity software. It includes numerous NEW and IMPROVED features not available in older versions:

New Version 3.0

  1. It is now multilingual! You may select from: English, Italian, Spanish, Russian, Swedish, Chinese and Japanese.
  2. Version 3.0 can output both DXF and PDF files.
  3. TemBreak 2 Lite MCCBs' and TemBreak 2 CBRs are now included

It is still free for download and the latest version is already available from the Electrical Design Software page and from downloads pages.

Use TemCurve 3.0 to select a correct circuit breaker for your electrical installation and to coordinate the settings of the breakers in it. Benefit from the most up to date Terasaki product information and accuracy.

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In 2016, Terasaki will exhibit in three big exhibitions:

Middle East Electricity Exhibition in Dubai.

This exhibition is the largest meeting place for energy industry professionals from over 100 countries worldwide.

“If you are involved in sourcing, installing or purchasing products/services for the power, lighting, renewable or nuclear sectors, Middle East Electricity is the must-attend event for you”

Visit us in the BEAMA pavilion, on a stand 2F20. This year we have increased our stand due to a large number of visitors in previous years’ exhibitions. You will be able to meet our Board of Management team to discuss possible business opportunities and find out more about Terasaki developments. You will also be able to see our new Retrofit sample.

Our marketing manager Tim Campbell will be doing a seminar on Terasaki NEW 3C Heating Protection for Switchgear. Don’t miss it: Wednesday, 2nd of March from 10:30 to 11:30.

Data Centre World in London, UK.

We will present our latest communication developments: you will see our NEW external monitor T2ED, our breakers with communications and how this all can be transferred to your device (laptop or phone) via Modbus.

Exhibition is taking place from 12 to 15 of April in Excel, London. Stand D40. Data Centre World is the world’s largest and most influential gathering of data centre expertise for data centre professionals and the data centre industry

“Data Centre World is the compelling and practical event for everyone involved in running and building data centres”

Hannover Messe in Germany.

HANNOVER MESSE has been the world’s most important industrial tradeshow and largest capital goods exhibition for years.

“Applications-oriented forums, exciting talks, riveting panel discussions and persuasive keynote speakers: The diverse range of events offered by HANNOVER MESSE will provide you with valuable new ideas to support your business.”

Visit us in the same place as before: hall 12, stand C84, next to our partner in Finland, Katko. Hannover exhibition is a great opportunity to meet Terasaki engineers from Japan – people, who develop our circuit breakers, innovators in electrical distribution equipment. You will also meet our Board of Management, application engineers and representatives from many countries.

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   Terasaki at Hannover and MEE
  • Floor Plan Floor Plan
  • Terrasaki Staff Terasaki Staff

This year Terasaki will exhibit at two big industry events: Middle East Electricity Exhibition in February and Hannover Fair in April.

From 11th to 13th of February 2014 Terasaki Electric will be presented in the BEAMA Group pavilion in the Dubai World Trade Centre on a stand 2E20.

In April 7-11 Terasaki will exhibit in Hannover on the joint stand together with our Finnish partner Katko. Our stand will be located in Hall 12 on a Stand C82.

At these exhibitions we would like to celebrate the 90th anniversary of Terasaki Electric! To do so, we are preparing special surprises for our visitors. Our friendly colleagues will be happy to welcome you on our stands at both events! We hope to see you there!

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Middle East Electricity and Hannover Exhibition

In 2015 Terasaki has taken part in two major industry events: Middle East Electricity Exhibition in Dubai in February and Hannover Messe in Germany in April.

Both exhibitions attract a high number of visitors from all over the world: Middle East region, Europe and Asia.

During both events Terasaki staff meets a lot of new and existing distributors, customers and other business contacts.

We would like to thank all our visitors once again: we are always happy to see you and receive feedback.

Middle East Electricity and Hannover ExhibitionMiddle East Electricity and Hannover Exhibition
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Hannover 2015 exhibition

Hannover 2015 exhibition

In April 2015 from 13th until 17th Terasaki will exhibit in Hannover exhibition in the same location we had in 2014: Hall 12, Stand C82 together with Katko, our partners from Finland.

We will be glad to meet you there to show our latest developments and discuss business opportunities!

Please contact Terasaki to get you FREE pass for the event and to arrange a meeting with our representatives.

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Selection Guide

Terasaki Instruction Manual

Terasaki has new catalogue - Selection Guide. International Edition. It includes all Terasaki products (including the latest developments) and corporate information.

This will become a replacement of our 8-page product leaflets and gives an overview of all Terasaki activities.

You may find it here or on Downloads page.

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Remote Air Circuit Breaker Controller

Terasaki Instruction Manual

This facility allows the ACB to be remotely operated locally.

The air circuit breaker is fitted with a removable umbilical connection that allows the operation of the circuit breaker from a safe area/distance.

Low voltage air circuit breakers (ACB) until recently have always been operated by personnel standing in front to the switchboard and using the mechanical push buttons located on the front of the ACB. In the event of an arc flash hazard event occurring this is a very dangerous place for the operator to be.

There are two solutions to this problem, one is for the operator to wear correct category PPE. Category 4 arc flash protection suit, depending on the energy levels present may not provide full protection. The other safer solution is to remove the operator from the dangerous area in front of the switchboard.

Terasaki have designed within the circuit breaker an umbilical connection socket which allows for a push button circuit breaker operation unit to be located at or outside the switch room door which can then be easily connected to the circuit breaker to be operated via an umbilical cable. Facility moves the operator from the dangerous location in front of the switchboard to a safe area. It also alleviates the need to run costly installation cables from a remote location to the switchboard.

A circuit breaker can either be supplied new or retrofitted into existing Terasaki circuit breakers.

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London Conference

Terasaki and Socomec Sicon hosted a Conference on the Future of Electrical Protection & Monitoring at Lord’s Cricket Ground on Thursday 6th February.

The conference provided an important forum for exchange between facility managers, industry professionals and academics, tackling the most critical global energy issues for our businesses. Dr. Catalina Sparatu from the Energy Institute at the University College London was the guest speaker and hosted a presentation on the Dynamic Simulation of Energy Systems.

Despite the Conference being held during the Tube Strike 50 delegates attended on the day and the event was judged to be a resounding success.

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   New Articles Are Now Available On Our Website

Obtaining spares for obsolete circuit breakers can prove to be impossible and replacing an entire switchboard can have a serious impact on production downtime and budget constraints.

Retrofitting a modern low voltage air circuit breaker has been proven to be a cost and time effective solution to this growing dilemma. Read more about retrofitting ACBs in the article “Design And Retrofitting Of Low Voltage Air Circuit Breakers” on our ACBs page.

Over the past few decades the low voltage installation has become increasingly more challenging for Moulded Case Circuit Breakers (MCCBs). Increased fault levels, higher harmonics levels, changing legislation and demand for maximum uptime have substantially altered the requirements of this important protective device.

Our “Safe Switchgear Specification” Paper will update the professional electrical engineer on the safe application of low voltage MCCB technology and will examine thoroughly protection disciplines, isolation principles and future trends for MCCBs

The “Application of Circuit Breakers to Reduce Downtime in Datacentres” paper will describe circuit breaker selection methods and available circuit breaker technology which can contribute to reduced downtime in datacentres. It is divided into issues related to topology (or system layout) and sustainability (performance over time). Find both articles on the MCCBs application notes’ page.

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   New Protective Device Range on Amtech

Amtech users now have the opportunity to design a complete protection system using Terasaki devices. Air Circuit Breakers (ACBs), Moulded Case Circuit Breakers (MCCBs) and Miniature Circuit Breakers (MCBs) covering 1A to 6300A ratings are included in the 2013 release.

Terasaki’s panelboard and distribution board ranges have been upgraded to include new TemBreak 2 Lite MCCBs and TD3 MCBs. Discrimination and cascade co-ordination between these devices is included in the software. Cascade protection of up to 40kA between MCCBs and MCBs has been proven by test.

Protection settings can even be uploaded and downloaded through the data link. This means that the settings can respond dynamically to changes in the electrical network (for example if the mains fails and the supply comes from a back-up generator). All the necessary protection relay models are included in Amtech software.

We also offer CIBSE CPD endorsed courses which have been used to train over 500 engineers in subjects such as discrimination and circuit breaker specifications. If you need training that is focused on learning, not selling, these concise courses are ideal.

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   Now On The Website!

Terasaki has published a new UK price list as a spreadsheet and as an indexed, searchable pdf file. It includes 220 pages of order codes and prices for circuit breakers, contactors, distribution boards and power factor correction. It is available to download from the website Download section.

A new version of up to date Order Codes List is also available on our Downloads page for our distributors.

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   TemBreak 2 800A to 1600A

Terasaki has extended the range of the popular TemBreak 2 MCCB range. New models have been developed from 800A to 1600A.

The 1000A model is be the same frame size as Terasaki’s existing XS800 (height = 273mm, width = 210mm, depth = 103mm). This is considerably smaller than most of Terasaki’s competitors who offer a 1600A frame device to protect 1000A circuits. Market prices of the new 1000A models are more competitive than the previous XS1250-CE / 1000A.

125kA and 200kA breakers in 800A frame are now available in the new range. Terasaki have recently won two large projects for Telehouse data centres by offering plug-in versions of the new 800A frame models.

The new MCCBs all feature from direct opening action to IEC 60947-5-1. This is a safety feature which is important for isolating machinery and is indicated by the direct opening action symbol on the nameplate. Only breakers made by Terasaki currently carry this safety mark.

Users can now benefit from the common design of TemBreak 2 MCCBs from 20A to 1600A. Shunt trips, auxiliary switches and alarm switches are exactly the same throughout the range and are easy to install in the field.

Terasaki’s two-dial electronic overcurrent relay also has the same design throughout the range, covering ratings from 20A to 1600A.

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   Terasaki Supports Apprentice Programme!

Terasaki Electric (Europe) Ltd in Glasgow have been supporting an apprentice programme for over twenty years now! Some of the first apprentices still work in the company.

At the moment we have six apprentices out of our 120 employees! One of them, Melissa Lyon, has been interview by Manufacturer Magazine recently, she has told about her experience in Terasaki.

Last September we had visitors from Chengdu Technicians College in China, who came to see how our apprentice programme works. The aim of the partnership was to introduce the Modern Apprenticeship model and work-based learning in general to our Chinese partners. In particular they were interested in Modern Apprenticeships in Engineering as this is the main focus of their College. The proposed outcome of the project has been to introduce an apprenticeship programme in mechanical engineering at their College as a pilot for further development of work based learning.

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   The Middle East Electricity Exhibition

On the 17th-19th of February 2013 in Dubai Terasaki will take part in the Middle East Electricity exhibition in Dubai International Convention & Exhibition Centre.

Terasaki will be presented in Hall 2 stand D35. This will be our fourth time exhibiting at this event.

Middle East Electricity is an exhibition which has been running for the past 37 years, it is the biggest platform in the Middle East region to do business in the power, lighting, new and renewable and water sectors.

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   Hanover exhibition

Terasaki Electric Europe will take part in Hanover exhibition in April 2012. The exhibition will start on the 23 of April and will end on the 27 of April. Terasaki will be presented in the Hall 12, stand E71 and in Hall 11 Rittal Stand, Ri4 Power Technology. Hope to see you there!

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   Terasaki in Moscow

Photo by Aleksandr Shevyakov. On the 10th of February in the British Embassy in Moscow Terasaki Electric Europe has hosted a seminar ‘Modern Terasaki Circuit Breakers for Safety and Protection’in cooperation with our Russian representative Azbuka Elektrichestva. More than 100 electronic specialists have attended this seminar.

Team Leader (Energy) of the British Embassy, Sean Earl, has held an opening speech, where he stated that the British Embassy is glad to support the cooperation of two countries in the energy industry, support Terasaki company and their official representative in Russia – Azbuka Elektrichestva. Diplomat has mentioned the importance of the energy industry and the high quality of the Terasaki products, which provide protection and safety in different parts of the world in proite houses, industrial buildings and marine industry, where Terasaki is a leading supplier of switching devices.

Mr Earl has also mentioned that the venue of the British Embassy in Moscow has been built using Terasaki circuit breakers, which have been providing safe and stable energy supply. Air circuit breakers guarantee safe and secure work for the embassy staff.

Tim Campbell, marketing manager of the Terasaki Electric Europe has presented general information about Terasaki circuit breakers, company profile and different project, where Terasaki circuit breakers were used. The survey in the end of the seminar has showed that guests highly evaluated all the presentations’ delivery and the background of our specialist. Tim Campbell has 13 years of experience working with low voltage equipment and provides training for specialists in Europe, Africa and South East. This year he has presented in Moscow for the first time and has answered all the questions from the guests.

Alexey Pischur, general manager of the Azbuka Elektrichestva, has made a presentation about the partnership with Terasaki in Russia.

Both presenters were very pleased with the audience, who was listening very carefully and asked interesting questions.

Between the presentations, during the coffee breaks and lunch, guests could see the product displays; try to operate with Terasaki breakers themselves.

Two switchboard building companies from Russia were also presenting their products: ‘Elektronmash’ from St. Petersburg and ‘EKTA’ from Ivanovo. Visitors could see their switchboards, which were built using Terasaki ACBs TemPower2 and MCCBs TemBreak2.

In the end of the event guests enjoyed sampling of Scotch Whisky from different regions of Scotland and received certificates about taking part in the seminar.

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   Chamber Awards 2011

British Chambers of Commerce (BCC) has launched the Chamber Awards in 2004 to recognise the most successful businesses and people working in them. Chamber Awards provide the opportunity for the Accredited Chambers of Commerce members to gain recognition on a regional and national scale for their excellent work and business achievements.

Our Marketing Manager has shared Terasaki’s experience in finding new markets and successfully operating there, and our future plans to enter new markets. Chamber Awards judges have rated the entry highly, so this year in the category ‘Finding New International Markets’ Terasaki has become a Regional Winner.

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   TERASAKI Open Day

Terasaki Electric Europe has hosted an Open Day on the 5th of October. A lot of specifyiers came to Clydebank, Glasgow to visit the manufacture. Visitors have attended a CPD seminar, where they were introduced to Circuit Breakers, Cascade and Discrimination.

Attendees could operate an Air Circuit Breaker, have hands-on demonstrations of Moulded Case Circuit Breakers and Distribution Boards and learn about all the services offered by Terasaki company on the product displays during the well-come tea and coffee breakfast. Everyone had a guided tour and explanation of assembly and test processes of modern circuit breakers provided by friendly staff. This all finished with a nice hot dinner and gifts from Terasaki to their guests, which replenished all the information they have gained. Terasaki has received a good feedback from the visitors, who were interested in further events that will be organised by the company or the Lunch and Learn Presentations that Terasaki Electric offers.

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   New Pro-DB Distribution Board and Pro-Panel Panelboards

Terasaki’s new distribution equipment meets the needs of modern commercial and industrial building electrical installations. Complying with UK regulations and standards for building projects*. The range includes Distribution Boards, Panel Boards and Integrated Metering Solutions.

New TP&N Offer

Pro-DB Type B distribution boards are fully type tested with a conditional short circuit rating of 25kA to BS EN 60439. Variations for the 125A TPN board include a choice of: 4, 6, 8, 12, 18 and 24 TP outgoing ways. For applications where the number of MCB ways requires a larger supply current, a 250A rated TPN version is also available in 8, 12, 16, 18 and 24 outgoing ways.

Complementing the Pro-DB distribution board is a completely new range of TD3 MCBS and single module RCBOs, providing the highest levels of safety and performance required for your installation. Assuring our customers that they are buying a component of good quality

Facilitating various industrial and commercial distribution applications, the choice of incomer options include: Switch Disconnectors, MCCBs, RCCBs and Contactor incomers. The TP&N distribution board can easily be converted to a SP&N system by utilising a single phasing kit for both 125A and 250A ratings.

Compact Solution for Energy Metering

Integrated metering can be easily achieved by simply adding a meter next to the incoming device in the 125A & 250A board. This means that simple energy meters (kWh) with pulsed output, digital multifunction meters with pulsed output or digital multifunction meters with Modbus output can be installed inside the board without the need for an extension box.

Split metering of lighting and power loads in the distribution board enables compliance with the building regulations in the UK. Pro-DB TP&N boards can separately monitor lighting and power loads by utilising dual metering kits in horizontal board configurations. Separate metering facility for a 125A board is also available in a vertical board configuration.

With generous wiring space and a unique cable entry system, why not switch over to the Pro-DB distribution range? Contact marketing@terasaki.co.uk for our Pro-DB price list and product brochure.
*BS7671 and Part L2 The Building Regulations 2000 (2006 edition).
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   Discover NEW Switchgear Solutions from Terasaki at the Hanover Fair 4th-8th April, Stand No: E71 Hall 13


We are delighted to invite you to join us at the Hanover Fair. We will exhibit together with EFEN, our distributor in Germany, in a prime position in the middle of Hall 13.

Our Directors, Managers and Staff will be available to discuss all your business requirements, and to explain our recent innovations, including:

• New TemBreak 2 MCCBs which can save space and money up to 250A, 40kA

     • MCCBs for use is photovoltaic systems at voltages up to 1000V DC

     • New range of MCBs, RCDs and RCBOs


TemPower 2 ACBs and TemBreak 2 MCCbs will be installed in simple switchboards on our stand for your inspection. You can also view our products in type-tested systems by our partners at the following stands:

• CUBIC Stand D40, Hall 12
• RITTAL Stand E06, Hall 11
• Wöhner Stand C66, Hall 12

17:00 to 18:00 will be Happy Hour on our stand. We hope you can join us at that time for a chat, a snack and a drink!


Contact David Wales NOW to make an appointment for a meeting or to arrange for a ticket for free entry to the Exhibition.
Telephone: +44 141 565 1689

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   Middle East Electricity Exhibition

Terasaki Electric Europe Ltd participated at the Middle East Electricity Exhibition from the 8th to 10th February 2011, in a joint stand with our partner for UAE, Al Ghandi Trading. Our joint stand was 36sq meters with 15sq meters apportioned to Terasaki.

This exhibition provided an opportunity to promote our new range of products including Space Saving MCCBS up to 250A and TD3 range of Miniature Circuit Breakers. Tom Craig (General Manager) presented two seminars on the Application of Circuit Breakers which were well received.
For further information on these new product ranges, please contact Terasaki.

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   Terasaki and Mardix Pass Test at One Hundred Thousand Amps

Terasaki and Mardix are delighted to announce the success of their joint switchgear testing program. Engineers at Mardix have designed a new industry-leading, high-capacity distribution switchgear system incorporating Terasaki circuit breakers. Intended for use in buildings with high, concentrated electrical energy demand such as data centres and banks, it has now been proven to withstand short-circuit fault current of up to one hundred thousand amps (100kA).

Peace of Mind from Independent Testing and Certification to IEC 61439

The consequences of switchgear failure when a business depends heavily on the availability of electricity could be disastrous. Terasaki and Mardix had the system independently tested and certified to give users and specifiers peace of mind about the performance of the equipment.

Short-circuit performance at 100kA was tested at the ASTA-approved DAMSTRA laboratory in the Netherlands.

Temperature performance was verified at kA Testing in the UK (also ASTA-certified). This highlighted the superior thermal performance of the switchboard and circuit breakers in that:

• a rating of 6300A for the incoming circuit (a TemPower 2 ACB) was achieved with natural cooling;

     • Outgoing circuits rated from 160A to 3200A (TemBreak 2 MCCBs and TemPower 2 ACBs) achieved a diversity factor of         1 with natural cooling.

Latest Switchgear Standard

The system was designed and tested to the latest standard for low-voltage switchgear assemblies, IEC 61439. ASTA certificates are available and reference the new standard.

Collaboration Offers Choice to Clients

Terasaki and Mardix are independent companies, successful in their separate, but overlapping business areas. Terasaki are the UK’s foremost circuit breaker specialists, supplying components to switchboard builders for a wide range of commercial, industrial and marine projects. Mardix deliver an integrated solution for every aspect of the critical power life cycle through switchgear, power management and service.
The co-operation between Terasaki and Mardix offers choice to clients who like to select the best technical solution for a project without being restricted to using the same brand for systems and circuit breakers due to existing certification. Some examples of the benefits of this “best of breed” approach are:

     • Reduction in space required for switchgear in the building. 100kA short-circuit withstand ratings can achieved in         1400mm wide incoming switchgear compartments. This is possible only due to the unique combination of Air Circuit         Breakers with exceptional ratings (Terasaki) and busbar design (Mardix) and can result in space savings of up to 40%         over conventional designs.

     • Overheating is the single most common cause of failure in switchgear. Full critical power monitoring systems,         incorporating real-time, continuous thermal measurement of circuit breakers is an easily achieved option with this         combination of equipment.

More Details

For more details of the tested solutions from Terasaki and Mardix, contact:

     • Terasaki: Tim Campbell, Marketing Manager. tim.campbell@terasaki.co.uk
       Telephone: 0141 941 1940

     • Mardix: Clare Coxon, PR Agent. clare@tenstories.co.uk
       Telephone: 015395 64242

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   TERASAKI Circuit Breakers Type-Tested With CUBIC

Two independent and innovative switchgear companies have co-operated to conduct a successful type-testing programme.

Terasaki and CUBIC are independent and innovative companies who have co-operated to offer one of the world’s most compact switchboards certified at up to 100kA - Icw for one second, containing Terasaki circuit breakers from 12A to 6300A.

We have proven the performance of our products together with a test programme, certified by KEMA and ASTA, at fault levels of 65kA, 80kA and 100kA.

This delivers unsurpassed circuit protection with built-in reliability and safety, giving confidence for the future of energy distribution.

Tests conducted:
   • Temperature rise
   • Dielectric properties
   • Short-circuit withstand strength
   • Effectiveness of the protective circuit
   • Creepage and clearance
   • Mechanical operation
   • Degree of protection
   • EMC
   • Resistance of insulation materials
   • Partial test to IEC 61439-1,-2
   • Internal arc fault containment to AS3439-1
Annex ZD and AS3000

Terasaki products included in this testing;

Moulded Case Circuit Breakers (MCCBs) - TemBreak2

One of the most powerful features of the TemBreak2 MCCB is that it is so easy to install and operate - it was designed that way.
TemBreak2 MCCBs are now available with high tech integrated LCD energy monitor which can be connected to an Automatic Monitoring and Targeting system.

The TemPower 2 ACB is extremely reliable in service.
All models in the range have a short-time withstand rating equal to their service breaking capacity. This guarantees total discrimination without further calculation because it allows short-circuit protection to be time-delayed even at the maximum prospective short-circuit current.

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   New Product Selection Book

We have produced a new combined product selection book, PL0809.The new publication combines product selection tables for Air Circuit Breakers, Moulded Case Circuit Breakers and Distribution products in one comprehensive user-friendly reference document.

The 139 page publication, with full price listings, is split into application-specific areas, with the main index providing a quick reference guide with pictures highlighting the key product areas.

Tim Campbell, Marketing Manager advised that Terasaki’s policy of continuous innovation means that they have made significant developments to all their ranges of electrical and safety protection products: 

   • TemBreak 2 MCCBs with integrated power and energy metering now available to order
   • Neutral links designed to match the terminal arrangements of 4P MCCBs – with optional moulded shrouds
   • Optional protection relays with manual reset facility for TemPower 2 ACBs
   • Optional ready-to-close contact for TemPower 2 ACBs
   • TemWay 100: a new single-phase distribution board
   • TemWay 250 LP: a split-metered distribution board for lighting and power

Terasaki’s delivery performance team have been working hard since last autumn to ensure that deliveries are the most reliable in the market place. This approach is strengthened by excellent technical support to ensure their customers receive the best possible performance and service.

Click here to download the product selection book
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   Save Space with Power Factor Correction Modules
Terasaki supply a complete range of products and systems for low, medium and high voltage power factor correction.

Our new ECCTT small units have been designed to be installed extremely easily in automatic power-factor correction equipment. The units offer a 70% reduction in width compared with our standard PFC modules, allowing for higher packing density and a reduction in the size of compartment. This will assist in minimizing switchboard size, and generally save costs.

We also offer standard modular cassettes for switchboard installation and prefabricated freestanding automatic capacitor banks.

Available types are:

   • ECCTT.40125 25Kvar 400V 50Hz Modular Unit
   • ECCTT.40150 50Kvar 400V 50Hz Modular Unit

Unit Specifications:

   • Cable connection.
   • Frame is galvanized sheet steel.
   • Set of three fuses which are NH00 curve gG with a high breaking capacity.
   • Flameproof connecting cables type N07VK.
   • The capacitors are the “dry” type, manufactured using self-healing metallised       polypropylene film. The capacitors are equipped with an overpressure       disconnecting safety device that at the end of its life or in the event of a failure       due to overvoltage, immediately cuts off the circuit power supply.
   • Minimum of 10mm horizontal and 20mm vertical spacing is required between units.

Small Modular Tray with Cable Connections
(L 150mm x W 250mm x H 400mm)
Quality and reliability of our equipment is guaranteed. Capacitors are designed to meet the requirements of IEC 60831-1/2, IEC 60871-1 and IEC 60871-2. End-users like Pirelli, VATech and Michelin rely on our range for power factor correction.

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