HelioProtection® Brand Introduction Mersen (formerly Ferraz Shawmut) Expertise in Solar Power Application

Agenda HelioProtection Brand Introduction HelioProtection Fuse Products Application Overview UL 2579 – Fuses for Photovoltaic Systems Applicable Customers and Why HelioProtection?

HelioProtection Brand Brand Identity A distinct logo that is easily recognizable

HelioProtection Brand Brand Promise Expertise in solar power applications Premium offering for the PV industry Delivering reliability and safety Communicates Mersen’s strategic position within the solar market

HelioProtection Fuse Products Three New Product Series Series HP6M HP10M HP6J Application String or Module Protection Array or Inverter Input Protection Voltage 600VDC 1000VDC Ampere 1-30A 70-600A Size Midget (10x38mm) Class J Approvals UL2579, IEC60269-6 UL2579

HelioProtection Fuse Products Catalog Number Selection Example: HP10M15 HP 10 M 15 HelioProtection Series Voltage 6 = 600VDC 10 = 1000VDC Fuse Class M = Midget J = Class J Ampere Rating

Application Overview

Application Overview

Application Overview String Combiner Box

Application Overview Array Combiner Box Inverter Input

The importance of UL 2579 – Fuses for Photovoltaic Systems

UL 2579 – Fuses for Photovoltaic Systems Background Information UL 248 – Low Voltage Fuses Divided into 16 sub-categories Class CC, Class RK, Class H, Class J, Plug Fuses, etc… Intended Applications Power Controls Power Low Voltage Distribution Power Electronics

UL 2579 – Fuses for Photovoltaic Systems General Performance Characteristics Voltage Rating may be up to 1500VDC Interrupting Rating is 10kA minimum Classification: Non-Renewable, Not Current-Limiting

UL 2579 – Fuses for Photovoltaic Systems Markings In addition to the marking requirements in UL 248-1, the fuse must be marked with the letters “PV” or “gPV” or the text “Photovoltaic Fuse”.

UL 2579 – Fuses for Photovoltaic Systems Expanded tests specific to PV application Verification of Freedom from Unacceptable Levels of Thermally Induced Drift Electrical performance verified after repeated thermal cycling Simulates night to day thermal climate cycle Verification of Functionality at Temperature Extremes Fuse to be conditioned at 50°C and electrically tested to verify functionality (compared to 25°C for UL 248) Current Cycling Fuses undergo current and thermal cycling to verify life expectancy and to prevent pre-mature fuse opening

Product Resources

Product Resources Collateral Data Sheets Solar Power Brochure HP6M, HP10M, HP6J Solar Power Brochure Performance Curves Time-Current Curves Temperature De-rating Watts Loss Outline Drawings PIQ Online Interactive Quiz

Applicable Customers and Why HelioProtection?

Applicable Customers System Integrators and Contractors Delivers: No-hassles, certainty Solar Inverter OEMs Delivers: Premium protection, cost savings, reliability Combiner Box Manufacturers Utility Power Generation and Distribution Delivers: revenue generation – no downtime, safety

Why HelioProtection Fuses? Easy Product Selection Dedicated solar brand delivers reliable, easy specification and selection Meets UL 2579 Standard Tested for night to day transition Tested to electrical operate at extreme temperatures Current cycled for increased liability and longevity Size Advantages HP6J frame size is minimum one-third smaller than competitor offering

Questions & Answers