SPD 2 series Surge Protection Device Product Launch

SPD 2 series Surge Protection Device Product Launch June 10, 2019 1

The Problem § National Electrical Manufacturers Association (NEMA) estimates: – 60 -80% of surges are created within a facility, such as when large appliances, like air conditioners, turn on and off – Surges can also originate from the electric utility during power grid switching – Lastly, the most powerful surges can be caused by lighting (https: //www. esfi. org/resource/surge-and-protect 413) (http: //files. esfi. org/file/Full-ESFI-Surge. Protection-Devices-Survey. pdf) 11. 0% 24. 4% 11. 9% 16. 1% 21. 5% 15. 0% Faulty or Damaged Wiring (internal) Lightning Static Electricity Discharge (internal) Equipment Turning On/Off (internal) Magnetic Coupling (internal) Grid Anomalies Confidential and Proprietary | Littelfuse, Inc. © 2019 2

The Impact § A spike in voltage can be harmful to electrical devices in your facility if the increase is above the device’s intended operating voltage. § The excess voltage can cause an arc of electrical current resulting in heat that damages the electrical components § Repeated small-scale surges may slowly damage your electronic equipment and shorten the life of appliances and electronics involved Confidential and Proprietary | Littelfuse, Inc. © 2019 3

Results of Surges or Transient Voltages § Lost productivity § Increased downtime and associated costs § Greater/unplanned capital expenditures § Unhappy customers § Lost business and revenue Confidential and Proprietary | Littelfuse, Inc. © 2019 4

SPD 2 Series § Littelfuse Type 2 SPD 2 series surge protection devices safeguard components from transient overvoltage or surges by limiting the fault current to a load or the unit being protected. Confidential and Proprietary | Littelfuse, Inc. © 2019 5

SPD 2 Series Features & Benefits Features Benefits Capability to clamp and withstand high-energy transients Ensures low-residual voltage during high-energy surge events and higher nominal discharge current to prevent disruption, downtime, and degradation or damage to equipment UL and VDE-IEC compliant in single part number One component can be utilized globally, reducing inventory needs and simplifying allocation of parts Interlocking tab mechanism Secures module to withstand vibration No additional overcurrent protection devices required in UL applications Reduces the number of components & costs required for protection SPD type and voltage-coded plug-in module Prevents specific SPD/voltage module from being plugged into wrong base. Eliminates risk of improper protection Confidential and Proprietary | Littelfuse, Inc. © 2019 6

SPD 2 Series Features & Benefits continued Features Benefits Compact footprint Increases panel design flexibility Visual life indicator Quick visual determines module replacement status to avoid loss of protection Pluggable module Fast and simple to replace, minimizing maintenance and downtime. No tools required Thermal protection Eliminates catastrophic failure IP 20 protection rating Finger-safe increases worker protection Confidential and Proprietary | Littelfuse, Inc. © 2019 7

SPD 2 Series Applications § Type 2 SPDs would be used on branch circuits at facilities to protect various components from surges that can cause major damage and downtime in applications such as: § Power Distribution – Load centers, transformers, generators § Electrical Loads – Motors, fans, heaters, blowers, ballasts § Industrial Controls – Programmable logic controllers, motor controls, Variablefrequency drives, proximity sensors, barcoding equipment, machine vision systems § Computers & Communications – LANs, WANs, intercoms, Fire, security, UPS or building management systems § HVAC or Medical Equipment Confidential and Proprietary | Littelfuse, Inc. © 2019 8

Primary Target Customers and Markets § Primary Target: – Panel Shops / Builders – Solar OEM Market – Machine OEM Market § Secondary Target: – – Mining Oil & Gas Food & Beverage Manufacturing Specifying Engineers Confidential and Proprietary | Littelfuse, Inc. © 2019 9

Comparison of SPD 2 Series with Competition – Higher Maximum Discharge current then most at 50 k. A – – § Can protect from larger single occurring surges Higher Nominal Discharge current at 20 k. A § Can protect from larger routine surges Voltage Protection Rating (VPR) § Low VPR to minimize the amount of voltage equipment is exposed to Includes PV options § Rated up to 1500 V dc for solar applications Thermal protection § Prevents MOVs from catastrophically failing Littelfuse ABB Bourns Citel DEHN Phoenix Contact Raycap SPD 2 OVR T 2 80 -…s P TS QS OVR T 2 40 -…s P TS QS 1250 1420 DS 40 VG DS 70 R DEHNguard M DEHNguard S VALVETRAB-SEC-T 2 Pro. Tec T 2 Confidential and Proprietary | Littelfuse, Inc. © 2019 10

SPD 2 Series Electrical Specifications -- XP+0 IEC Electrical Maximum Nominal Discharge Voltage AC Voltage Continuous Discharge Current Protection (50/60 Hz) Operating AC Current (8/20 µs) Level (Uo/Un) Voltage (Uc) (8/20 µs) (In) (Imax) (Up) Ordering Number UL Electrical TOV Short-Circuit AC Withstand 5 Current Rating s (ISCCR) (UT) TOV 120 min (UT) / Mode Maximum Continuous Voltage Nominal Short-Circuit AC Operating Protection Discharge Current Voltage Rating Current (8/20 Rating Single Unit Weight (MCOV) (VPR) µs) (In) (SCCR) SPD 2 -075 -1 P 0 -R 60 V 75 V 20 k. A 50 k. A 800 V 25 k. A / 50 k. A 114 V / Withstand 75 V 330 V 20 k. A 100 k. A 124 g (0. 274 lb) SPD 2 -150 -1 P 0 -R 120 V 150 V 20 k. A 50 k. A 1250 V 25 k. A / 50 k. A 229 V / Withstand 150 V 600 V 20 k. A 200 k. A 128 g (0. 283 lb) SPD 2 -300 -1 P 0 -R 240 V 300 V 20 k. A 50 k. A 1500 V 25 k. A / 50 k. A 337 V 442 V / Safe Fail 300 V 900 V 20 k. A 150 k. A 135 g (0. 298 lb) SPD 2 -350 -1 P 0 -R 277 V 350 V 20 k. A 50 k. A 1750 V 25 k. A / 50 k. A 403 V 529 V / Safe Fail 350 V 1000 V 20 k. A 200 k. A 140 g (0. 309 lb) SPD 2 -480 -1 P 0 -R 400 V 480 V 20 k. A 50 k. A 2300 V 25 k. A / 50 k. A 581 V 762 V / Safe Fail 480 V 1500 V 20 k. A 200 k. A 145 g (0. 320 lb) SPD 2 -550 -1 P 0 -R* 480 V 550 V 20 k. A 50 k. A 2500 V 25 k. A / 50 k. A 697 V 915 V / Safe Fail 550 V 2000 V 20 k. A 200 k. A 148 g (0. 326 lb) SPD 2 -750 -1 P 0 -R 600 V 750 V 20 k. A 35 k. A 3400 V 25 k. A / 50 k. A 871 V 1143 V / Safe Fail 750 V 2500 V 20 k. A 200 k. A 161 g (0. 355 lb) SPD 2 -150 -2 P 0 -R 120 V 150 V 20 k. A 50 k. A 1250 V 25 k. A / 50 k. A 229 V / Withstand 150 V 600 V 20 k. A 200 k. A 252 g (0. 556 lb) SPD 2 -300 -2 P 0 -R 240 V 300 V 20 k. A 50 k. A 1500 V 25 k. A / 50 k. A 337 V 442 V / Safe Fail 300 V 900 V 20 k. A 150 k. A 266 g (0. 587 lb) SPD 2 -350 -2 P 0 -R 277 V 350 V 20 k. A 50 k. A 1750 V 25 k. A / 50 k. A 403 V 529 V / Safe Fail 350 V 1000 V 20 k. A 200 k. A 276 g (0. 609 lb) SPD 2 -480 -2 P 0 -R 400 V 480 V 20 k. A 50 k. A 2300 V 25 k. A / 50 k. A 581 V 762 V / Safe Fail 480 V 1500 V 20 k. A 200 k. A 286 g (0. 631 lb) SPD 2 -550 -2 P 0 -R* 480 V 550 V 20 k. A 50 k. A 2500 V 25 k. A / 50 k. A 697 V 915 V / Safe Fail 550 V 2000 V 20 k. A 200 k. A 290 g (0. 639 lb) SPD 2 -750 -2 P 0 -R 600 V 750 V 20 k. A 35 k. A 3400 V 25 k. A / 50 k. A 871 V 1143 V / Safe Fail 750 V 2500 V 20 k. A 200 k. A 318 g (0. 702 lb) *UL Listed only Confidential and Proprietary | Littelfuse, Inc. © 2019 11

SPD 2 Series Electrical Specifications -- XP+0 continued IEC Electrical Nominal Maximum Discharge AC Voltage Continuous Current (50/60 Hz) Operating AC (8/20 µs) (Uo/Un) Voltage (Uc) (In) Ordering Number UL Electrical Maximum Discharge Voltage TOV Current Protection Short-Circuit AC Withstand (8/20 µs) Current Rating Level 5 s (Imax) (Up) (ISCCR) (UT) Maximum Continuous Nominal AC Voltage Discharge Short-Circuit Operating Protection Current Single Unit Voltage (8/20 µs) Rating Weight (MCOV) (VPR) (In) (SCCR) TOV 120 min (UT) / Mode SPD 2 -150 -3 P 0 -R 120 V 150 V 20 k. A 50 k. A 1250 V 25 k. A / 50 k. A 229 V / Withstand 150 V 600 V 20 k. A 200 k. A 355 g (0. 783 lb) SPD 2 -300 -3 P 0 -R 240 V 300 V 20 k. A 50 k. A 1500 V 25 k. A / 50 k. A 337 V 442 V / Safe Fail 300 V 900 V 20 k. A 150 k. A 376 g (0. 829 lb) SPD 2 -350 -3 P 0 -R 277 V 350 V 20 k. A 50 k. A 1750 V 25 k. A / 50 k. A 403 V 529 V / Safe Fail 350 V 1000 V 20 k. A 200 k. A 391 g (0. 862 lb) SPD 2 -480 -3 P 0 -R 400 V 480 V 20 k. A 50 k. A 2300 V 25 k. A / 50 k. A 581 V 762 V / Safe Fail 480 V 1500 V 20 k. A 200 k. A 406 g (0. 896 lb) SPD 2 -550 -3 P 0 -R* 480 V 550 V 20 k. A 50 k. A 2500 V 25 k. A / 50 k. A 697 V 915 V / Safe Fail 550 V 2000 V 20 k. A 200 k. A 414 g (0. 913 lb) 200 k. A 454 g (1. 001 lb) SPD 2 -750 -3 P 0 -R 600 V 750 V 20 k. A 35 k. A 3400 V 25 k. A / 50 k. A 871 V 1143 V / Safe Fail 750 V 2500 V 20 k. A SPD 2 -150 -4 P 0 -R 120 V 150 V 20 k. A 50 k. A 1250 V 25 k. A / 50 k. A 229 V / Withstand 150 V 600 V 20 k. A 200 k. A 477 g (1. 052 lb) SPD 2 -300 -4 P 0 -R 240 V 300 V 20 k. A 50 k. A 1500 V 25 k. A / 50 k. A 337 V 442 V / Safe Fail 300 V 900 V 20 k. A 150 k. A 505 g (1. 114 lb) SPD 2 -350 -4 P 0 -R 277 V 350 V 20 k. A 50 k. A 1750 V 25 k. A / 50 k. A 403 V 529 V / Safe Fail 350 V 1000 V 20 k. A 200 k. A 525 g (1. 158 lb) SPD 2 -480 -4 P 0 -R 400 V 480 V 20 k. A 50 k. A 2300 V 25 k. A / 50 k. A 581 V 762 V / Safe Fail 480 V 1500 V 20 k. A 200 k. A 545 g (1. 202 lb) SPD 2 -550 -4 P 0 -R* 480 V 550 V 20 k. A 50 k. A 2500 V 25 k. A / 50 k. A 697 V 915 V / Safe Fail 550 V 2000 V 20 k. A 200 k. A 557 g (1. 228 lb) *UL Listed only Confidential and Proprietary | Littelfuse, Inc. © 2019 12

SPD 2 Series Electrical Specifications -- XP+1 IEC Electrical UL Electrical Ordering Number Maximum Nominal Maximum Continuous Discharge Current Nominal Operating AC Voltage (8/20 µs) (50/60 Hz) (L-N / N-PE (Uo/Un) Uc) In) Imax) Maximum Continuous Voltage Follow Short-Circuit Protection Current AC AC Operating TOV TOV Level Interrupt Current Withstand 120 min Withstand Voltage (L-N / N-PE Rating 5 s (L-N UT) / 200 ms (L-N / N-PE Up) (N-PE Ifi) (L-N ISCCR) (L-N UT) Mode (N-PE UT) MCOV) Voltage Protection Rating (L-N / N-PE VPR) Nominal Discharge Current (8/20 µs) (L-N / N-PE In) Short-Circuit Current Rating (L-N SCCR) Single Unit Weight SPD 2 -075 -1 P 1 -R 60 V 75 V / 305 V 20 k. A / 40 k. A 50 k. A / 65 k. A 800 V / 1500 V 100 ARMS 25 k. A / 50 k. A 114 V / Withstand 1200 V 75 V / 305 V 330 V / 1000 V 20 k. A / 20 k. A 100 k. A 124 g (0. 274 lb) SPD 2 -150 -1 P 1 -R 120 V 150 V / 305 V 20 k. A / 40 k. A 50 k. A / 65 k. A 1250 V / 1500 V 100 ARMS 25 k. A / 50 k. A 229 V / Withstand 1200 V 150 V / 305 V 600 V / 1000 V 20 k. A / 20 k. A 200 k. A 128 g (0. 283 lb) SPD 2 -300 -1 P 1 -R 240 V 300 V / 305 V 20 k. A / 40 k. A 50 k. A / 65 k. A 1500 V / 1500 V 100 ARMS 25 k. A / 50 k. A 337 V 442 V / Safe Fail 1200 V 300 V / 305 V 900 V / 1000 V 20 k. A / 20 k. A 150 k. A 135 g (0. 298 lb) SPD 2 -350 -1 P 1 -R 277 V 350 V / 305 V 20 k. A / 40 k. A 50 k. A / 65 k. A 1750 V / 1500 V 100 ARMS 25 k. A / 50 k. A 403 V 529 V / Safe Fail 1200 V 350 V / 305 V 1000 V / 1000 V 20 k. A / 20 k. A 200 k. A 140 g (0. 309 lb) SPD 2 -300 -3 P 1 -R 240 V 300 V / 305 V 20 k. A / 40 k. A 50 k. A / 65 k. A 1500 V / 1500 V 100 ARMS 25 k. A / 50 k. A 337 V 442 V / Safe Fail 1200 V 300 V / 305 V 900 V / 1000 V 20 k. A / 20 k. A 150 k. A 486 g (1. 072 lb) SPD 2 -350 -3 P 1 -R 277 V 350 V / 305 V 20 k. A / 40 k. A 50 k. A / 65 k. A 1750 V / 1500 V 100 ARMS 25 k. A / 50 k. A 403 V 529 V / Safe Fail 1200 V 350 V / 305 V 1000 V / 1000 V 20 k. A / 20 k. A 200 k. A 501 g (1. 105 lb) Confidential and Proprietary | Littelfuse, Inc. © 2019 13

SPD 2 Series Electrical Specifications -- PV IEC Electrical UL Electrical Maximum Continuous Operating DC Voltage (UCPV) Nominal Discharge Current (8/20 µs) (In) Maximum Discharge Current (8/20 µs) (Imax) Total Discharge Current (ITotal) Voltage Protection Level (Up) Short-Circuit Current Rating (ISCPV) Maximum Permitted DC Voltage (Ipvdc) Voltage Protection Rating (VPR) Nominal Discharge Current (8/20 µs) (In) Short-Circuit Current Rating (SCCR) Single Unit Weight SPD 2 -PV 11 -3 P 0 -R 1100 V 20 k. A 40 k. A 50 k. A 3800 V 11 k. A 1100 V 2500 V 20 k. A 50 k. A 406 g (0. 896 lb) SPD 2 -PV 15 -3 P 0 -R 1500 V 20 k. A 30 k. A 40 k. A 5000 V 11 k. A 1500 V 4000 V 20 k. A 65 k. A 454 g (1. 001 lb) Ordering Number Confidential and Proprietary | Littelfuse, Inc. © 2019 14

Dimensions, Marking and Part Numbering System Module + Base Height Width Depth 1 TE 90 mm (3. 54”) 18 mm (0. 71”) 70 mm (2. 76”) 2 TE 90 mm (3. 54”) 36 mm (1. 42”) 70 mm (2. 76”) 3 TE 90 mm (3. 54”) 54 mm (2. 13”) 70 mm (2. 76”) 4 TE 90 mm (3. 54”) 72 mm (2. 84”) 70 mm (2. 76”) Confidential and Proprietary | Littelfuse, Inc. © 2019 15

Pricing, Samples, Availability and Contacts § Pricing and Samples - § Production Availability - § Littelfuse Price Book Please contact Littelfuse product management for samples availability Production lead-time: 6 -8 Weeks Packaging: Individual SKU Contacts - Product Manager: Richard Dale Email: RDale@littelfuse. com Confidential and Proprietary | Littelfuse, Inc. © 2019 16

Sales Tools, Technical Support and Keywords § Current datasheets are available on www. littelfuse. com. - Enter “SPD 2 series” in the search box § Application and Technical Support: 1 -800 -832 -3873 § Suggested Keywords - Surge protection device - Transient overvoltage - SPD 2 series - Fault current - Type 2 - SPD Confidential and Proprietary | Littelfuse, Inc. © 2019 17