MERSEN Electrical Protection Electricity runs the world... Mersen keeps it safe and reliable

2 Mersen is a global expert in materials and solutions for extreme environments as well as in the safety and reliability of electrical equipment About Mersen

3 Snapshot of the group –Headquartered in Paris –2010 Revenues ~ €531M* –6,700 Employees –Listed at Paris stock market –Operations in more than 40 countries About Mersen * First 9 months

4 Group’s Capital Ownership –Foreign institutional investors 39% –French Institutional Investors 39% –Caisse des Depots et Consignations 10% –Ameriprise Financial Inc 8% –Employees 1.40% –Self 0.20% About Mersen

5 Two Activities 43.6% Advanced Materials & Technologies 56.4% Electrical Components & Technologies About Mersen

6 Advanced Materials & Technologies Solutions based on graphite and other materials for highly demanding industrial environments: –High Temperatures Isostatic graphite for extremely hot environments Kiln linings, glass-making, manufacture of silicon chips, solar cells –Anti-Corrosive Equipment Ultra-resistant equipment, designed with graphite and noble metals (tantalum, titanium, zirconium, etc.) Used to distribute, mix and store highly corrosive fluids for the chemicals and pharmaceutical industries About Mersen

7 Electrical Components & Technologies Innovative solutions to improve energy quality and the electrical safety of people and equipment –Fuses and fuse gear developed to the specific needs of each installation –Low voltage & high power switches used in applications ranging from industrial controls to heavy process industries –Cooling of power electronics to improve the output of power semiconductors –Power transfer for rail vehicles –Brushes and brush holders, key components in the operation of revolving electrical machines, contacts for current collection, slip-ring assemblies and signal transmission systems About Mersen

8 39% Europe 36.3% North America 22% Asia 2.7% ROW Two Activities Operating Globally About Mersen

9 Energy –Renewable Solar Wind Hydro Geo thermal –Fossil –Nuclear Five End-Use Markets Served About Mersen

10 Five End-Use Markets Served Transportation –Rail (tramway, subway & trains) –Automobile –Aerospace & aeronautics –Ports & marine About Mersen

11 Power Electronics - Industrial, OEMs, Power Semiconductor –Drives –UPS –Inverters –Induction heating –Welding Five End-Use Markets Served About Mersen

12 Process Industries –Steel-making –Pulp & paper –Glass production –Food processing –Recycling –Others Five End-Use Markets Served About Mersen

13 Chemical/Pharmaceutical –Fine chemicals –Pharmaceuticals –Inorganic chemicals, organic chemicals Five End-Use Markets Served About Mersen

14 About Electrical Protection International network Application expertise Product expertise Global resources for electrical protection Doing more with Mersen Overview

15 About Electrical Protection Toronto Newburyport Juarez El Fahs Kaposvar St Bonnet La Mure Provins Gorcy Shanghai Wenzhou Bangalore Nagahama Louisville Idstein Graph keys Distribution site Manufacturing site Low Cost site Center of Expertise An international industrial network at your disposal Wien Annaberg Beijing

16 About Electrical Protection Applications Expertise at Work

17 About Electrical Protection Mersen’s specialized heat sinks cool the power electronics used in today’s advanced high speed trains Semiconductor fuse technology, pioneered by Mersen, protects the power electronics in those same high speed trains Power Electronics in Transportation Applications Expertise at Work

18 About Electrical Protection Current collectors supplied by Mersen assure reliable power from the rail to the train Mersen’s high power switches provide a safe and reliable disconnect for maintenance personnel Low Voltage Distribution in Transportation Applications Expertise at Work

19 About Electrical Protection Mersen’s HelioProtection ® line of fuse and fuse holders provides specialized protection to the power distribution system of today’s solar power systems LV Power Distribution in Solar Power Applications Expertise at Work

20 About Electrical Protection Fuse and switching technologies from Mersen are used in the control panels that position advance solar arrays towards the traveling sun Power Controls in Solar Power Applications Expertise at Work

21 About Electrical Protection Heatsinks from Mersen cool the inverters that convert the solar cell’s DC power to AC Mersen’s semiconductor fuses protect the inverter’s power electronics Power Electronics in Solar Power Applications Expertise at Work

22 About Electrical Protection Medium voltage fuses protect the system at the point of connection to the utility network High power switches from Mersen provide a safe disconnection Power T&D in Solar Power Applications Expertise at Work

23 About Electrical Protection Arc fault protection technology in Mersen fuses limit fault currents to protect cables, motors, equipment and personnel LV Power Distribution in Process Industries Applications Expertise at Work

24 About Electrical Protection Surge protection from Mersen protect sensitive control equipment from voltage transients, thus limiting down time Power Controls in Process Industries Applications Expertise at Work

25 About Electrical Protection Medium voltage fuses protect the facility’s system at the point of connection High power switches are designed to provide a safe disconnection Power T&D in Process Industries Applications Expertise at Work

26 About Electrical Protection And Countless Other Examples of Bringing Application Expertise to The User Applications Expertise at Work

27 High Power Test Labs –Europe: Saint Bonnet de Mure, France High power and low power IEC testing –North America: Newburyport, MA, U.S.A. High power and low power Surge testing UL approved for third party testing Applications Expertise Supported by Research & Development About Electrical Protection

28 Product Overview 1.Overcurrent protection 2.Surge protection 3.Cooling of power electronics 4.Low voltage and high power switches 5.Power transfer for rail vehicles About Electrical Protection Product Expertise

29 Overcurrent Protection For motors, mains, feeds & branch circuits, transformers, cables, semiconductors, and special applications –General purpose low voltage fuses Fuses for every global standard –Semiconductor fuses –Medium voltage fuses –Fuse blocks & holders –Disconnect switches –Power distribution blocks (PDBs) About Electrical Protection Product Expertise

30 Surge Protection –For all areas of the facility Service entrance Mid facility Point of use –PV systems –Patented TPMOV ® technology About Electrical Protection Product Expertise

31 Cooling for Power Semiconductors –Air cooling solutions Air cooled heatsinks Phase change solutions Heat pipes –Liquid cooling solutions Vacuum brazed Embedded copper pipes in aluminum plate About Electrical Protection Product Expertise

32 High Power Switches –High current DC –Low voltage DC –Medium voltage AC –Contactors –Systems About Electrical Protection Product Expertise

33 Power Transfer for Rail Vehicle –Radial and axial mount earth current return units (ERCU) An effective shunt around the bearing, mounted on all electric locomotives –Top, bottom lateral current collector devices (CCD) For your 3rd rail at a typical transit system With or without fuse protection –Roof or bogie frame fuse box Catenary or 3rd rail Protect main cable from short circuit current About Electrical Protection Product Expertise

34 Products that meet every global standard ISO 9001 certified ISO certified About Electrical Protection Product Expertise

35 Global network of distributors Global technical support teams Early investment in your projects with expert research and design support Solutions tested under real-life condition in Mersen’s own high power test labs Your Global Source for Electrical Protection About Electrical Protection

36 Do More with Mersen Protect electrical systems and the people who use them Improve electrical safety, performance and reliability Reduce system downtime Develop technical solutions that increase your competitiveness Reduce investment costs and lead times Increase your global capacity Seize opportunities in emerging markets

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