Type 1 and Type 2 Surge Protective Devices (SPDs)

1 11 Type 1 and Type 2 Surge Protective Devices (SPDs)Building Automation2 Littelfuse, Inc. 20212 Other products which share similararchitecture with Type 1 & 2 Surge Protective DevicesType III Surge protectorSwitch Mode Power SupplyCircuit BreakerDin RailPower SupplyType I & II Surge protectorCommunication port protectionIntelligent Outlets3 Littelfuse, Inc. 20213 Type 1 and 2 SPD growing at a CAGR of * Surge Protective Devices (SPDs) for AC lines Source:*CAGR from Market & Markets & Grandview Research averageMarket Trends and DriversWith intelligent Devices propagating throughout homes and buildings Surge protection has become even more importantVoltage surges come from various sources including lightning strikes, switching of large motors or switch gear, coupling, and electrostatic dischargeA commercial or industrial facility will have Surge protection Devices at the incoming AC line, at power distribution, and near critical electrically powered equipmentGlobal warming is projected to increase lighting strikes by 12% per degree Celsius of global warming and about 50% over this : Science MagazineNEC2020 requires all new homes in the US to have Type 1 or Type 2 SPD.

2 70% adoption of this code is expected by 2021. NEC claims $15,000 of electrical equipment that can be damaged in homeUnits (in m illions)02468101214161820202020212022202 3202420252025 NAEUAsia4 Littelfuse, Inc. 20214 Littelfuse components are core for Type 1 and 2 SPDsOvercurrent protection FuseProtectControlSenseOvervoltage protection MOV TMOV SPDs come in different configurations depending on operating voltage, AC line type, and protection requirements Fuses can be integrated within SPDs or externalOvervoltage protection GDT5 Littelfuse, Inc. 20215L/+Figure 2: SPD activated by voltage surgeHow a Surge Protective Device (SPD) workLoadSPDL/+N/-PEPE ( Protective Earth)Figure 1: SPD during normal operationLoadSPDN/-PE ( Protective Earth)1. There are many different SPD product types different AC line voltages, configurations, and customer protection mode as shown in example protects between active lines and Protective conductor.

3 SPD could also be placebetween active lines for normal (differential) mode voltage protectionPESPD function: SPDs limit the Surge voltage amplitude to a defined level so dielectric strength of equipment is not exceeded. During voltage Surge the SPD discharges the associated Surge currents. An example of a circuit with common mode1protection is shown in Figure 1. When a voltage Surge occurs the SPD switches close as shown in Figure 2. Voltage Surge sources can include lightning, induced power surges, industrial and switching surges, and nuclear electromagnetic pulses. This closure only lasts for the duration of the Surge voltage which is typically a few microseconds. The equipment is safeguarded and continues to , Inc. 20216 Single phase load protectionLittelfuse components for single phase SPDsCl i ck on the product seri es i n the tabl e below for more i nfoTechnologyFunction in ApplicationSeriesBenefitsFeaturesIFuseOv ercurrent protection specif ically for SPD productsLVSPD esigned to surv iv e surges caused by lightning as described in IEC and UL standardsComplements Littelf use MOVs and AK TVS diodesIIMOVV oltage Surge protection with thermal disconnect TMOV, LSTSame f ootprint f or 50kA and 75kA Imaxf or same PCB lay out (LST)Normally open and normally closed options f or remote indicationIIIGDTV oltage Surge protection with no signif icant leakage currentCG2, CG3 Surge protection f or AC linesRugged ceramic-metal constructionLNIIIIIILoadThermaldisconnec tMOVSPD Notes: The latest SPDs can offer features such as voltage Surge data and protection status through WiFi.

4 ESD protection is available with TVS Diode Array, AQ1003-01 LTG GDTs are often used between neutral and ground to minimize leakage current. Spark gap technology is sometimes used for IEC Class 1 (EN Type 1) applications7 Littelfuse, Inc. 20217 Littelfuse components for 3-phase SPDsCl i ck on the product seri es i n the tabl e below for more i nfo3-Phase load protectionL3NL2L1 LoadIIIIIIT hermaldisconnectMOVT echnologyFunction in ApplicationSeriesBenefitsFeaturesIFuseOv ercurrent protection specif ically for SPD productsLVSPD esigned to surv iv e surges caused by lightning as described in IEC and UL standardsComplements Littelf use MOVs and AK TVS diodesIIMOVV oltage Surge protection with thermal disconnect TMOV, LSTSame f ootprint f or 50kA and 75kA Imaxf or same PCB lay out (LST)Normally open and normally closed options f or remote indicationIIIGDTV oltage Surge protection with no signif icant leakage currentCG2, CG3 Surge protection f or AC linesRugged ceramic-metal constructionSPD Notes: The latest SPDs can offer features such as voltage Surge data and protection status through WiFi.

5 ESD protection is available with TVS Diode Array, AQ1003-01 LTG GDTs are often used between neutral and ground to minimize leakage current. In industrial and commercial buildings, a system approach is needed to optimize protection . Spark gap technology is sometimes used for IECC lass 1 (EN Type 1) applications8 Littelfuse, Inc. 2021810 x 350 s pulse (IEC 61643-11 only) 8 x 20 s pulse (IEC 61643-11 & UL 1449) Terminology for OEM product with IEC and UL For UL Type 1 & Type 2 For IEC Class II test (EN1 Type 2) Imaxand Intested with this pulse shape For IEC Class I (EN Type 1) SPD must survive 5 pulses increasing in magnitude to maxIimp There is no equivalent test in the UL 1449 IEC 61643-11 DescriptionUL 1449 IimpMaximum Surge current rating for an SPD subjected to a 10 x 350 s wave shapeNot usedImaxMaximum Surge current rating for an SPD subjected to an 8 x 20 s wave shapeNot usedInNominal Surge discharge current 8 x 20 s wave shapeInISCCRS hort Circuit Current Rating-withstand capabilitySCCRUPV oltage protection Level, Max let thru voltage level of the SPD subjected to a test surgeVPRUCM aximum Continuous Operating Voltage the SPD can be exposedMCOVNot usedNominal operational voltage, or application voltageOperational voltage1.

6 European Norm. Type is most often used by European OEMs instead of Class9 Littelfuse, Inc. 20219 IEC & UL Class and Type Electrical and electronic equipment and transients IEC 61643-11 Class (EN Type) -Clas s (EN Type) defined by s urge current puls e s hape us ed to tes t voltage lim iting SPD function -Class I uses 10/350 s pulse shape-Class II uses 8/20 s pulse shape-SPD can be classified as Class I & II-Class III have low discharge capacity and must be installed as supplement to Type II SPD-EN nd for Europe n Norm nd erm Type i u ed by mo Europe n OEMs instead of Class UL 1449 Types -Types 1, 2, and 3 defined by location-Type 1 are connected between service transform er and building line side -Type 2 are connected on load side of service disconnect or integrated in electrical panel -Type 3 are point of use and plug in -Type 4 are com ponent as semblies with one or m ore type 5 com ponents including disconnect.

7 Examples: LST or TMOV-Type 5 are discrete component Surge suppressors such as MOVs that may be on printed circuit board. IEC Class III and UL Type 3 not included in this I or I+II(Type 1 or 1+2)10 m (30 ft)Class II or Class I + II(Type 2 or Type 1+ 2)Class II or Class II + III(Type 3 or Type 1+ 2)UL TypesIEC Class(EN Type)Betw een service transf ormer and buildingLoad side of service disconnectPoint of UseType 1 Type 2 Type 3plug inType 4 component assembly including disconnectType 5 components (example MOV)Also see our Spotlighton IEC 62368-1 Standard10 Littelfuse, Inc. 202110 SPD locations for industrial or commercial buildingsSPD locationProtected equipment examplesMain distribution protection UPS Motor Control Centers (MCCs) Backup Pow er Sw itchgear Transf er sw itchSub-distribution protection Local backup pow er Sw itchgear Generators HVAC Fire alarm systems Security systems Building management systems Pow er Distribution Unit (PDU)Equipm ent level protection Motor drives Sof t starts Medical equipment Lif e support equipment Test equipment Printers Communication systems Escalators/elevator Parking lot lighting Computer servers11 Littelfuse, Inc.

8 202111 Additional information can be found on ntegrated CircuitsProduct CatalogClick on images to open the catalog12 Littelfuse, Inc. 202112 Local resources supporting our global customersManausS o PauloFremontMilpitasLong BeachRapid CitySaskatoonBurlingtonMount ProspectMadisonChicagoChampaignBeverlyPi edras NegrasMatamorosMuzquizCharnecade CaparicaSan SebastianLegnagoBeijingWuxiSuzhouShangha iKunshanTsukubaTokyoSeonghamSeoulChu-pei TaguigLipaCityTaipeiSingaporeDongguanHon g KongKaunasLeidenAmsterdamDeventerSales LegendR&DManufacturingBremenLampertheimE ssen LaufChippenhamNew DelhiRound Rock13 Littelfuse, Inc. 202113 Partner for tomorrow s electronic systemsA global leader with a broad product portfolio, covering every aspect of protection , sensing, and controlBroad product portfolioOur engineers partner directly with customers to help speed up product design and meet their unique needsApplication expertiseTo help customers get products to market faster, we offer certification testing to global regulatory standardsTesting capabilitiesWe help customers in the design process to account for requirements set by global regulatory authoritiesCompliance & regulatory expertiseHigh-volume manufacturing that is committed to the highest quality standardsGlobal manufacturingOur global customer service team is with you to anticipate your needs and ensure a seamless experienceGlobal customer serviceSaferConnectedGreener14 Littelfuse, Inc.

9 Slides16 Littelfuse, Inc. 202116 Schneider HomelinePlug-on Neutral SPD Model number & specificationNameThe Square D HomelinePlug-on Neutral Surge Protective DeviceModel NumberHOM250 PSPDD escriptionResidential Surge Protective DevicesSpecificationsVoltage rating: 120/240 VMOCV: 150 V L-N, 300 V L-L Other manufacturers of similar productsABB, Rockwell, Eton,Ditek,DenhLittelfuse opportunitiesTMOV:LST1520EL2NT2 Schneider HomelinePlug-on Neutral SPD17 Littelfuse, Inc. 202117 Schneider HomelinePlug-on Neutral SPD teardown TechnologyFunction in applicationSeriesBenefitsFeaturesTMOVP rotects subsequenthousehold equipmentf rom voltage surges such as lighting other transientsLSTSame f ootprint f or 50 kA and 75 kA Imax f or same PCB layout (LST)Normally open and normally closed options f or remote indicationCl i ck on the product seri es i n the tabl e below for more i nfoProtectControlSenseTPMOVMake: MersenLFUS: LST1505 LED18 Littelfuse, Inc.

10 202118 Phoenix Contact Type 2 SPDM odel number & specificationNamePhoenix ContactModel NumberVAL-SEC-T2-3S-350/40 DescriptionPluggable Surge Protective device, in accordance with Type 2/Class II, for 3-phase power supply networks with separate N and PE (5-conductor system: L1, L2, L3, N, PE), with remote indication contact. With 40 kA discharge capacity in accordance with the requirements of VDE 0100-534:2016-10 relating to SPDs at the system feed : mmWidth: mmDepth: mm (incl. DIN rail mm)Horizontal pitch: DivOperating voltage: 5 V AC .. 250 V AC125 V DC (200 mA DCOperating current: 5 mA AC .. 1 A AC1 A DC (30 V DC)Other manufacturers of similar productsABB, Mersen, Schneider, Eaton, DEHN, OBO, Phoenix, HagerLittelfuse opportunitiesMOV: Custom, GDT: CustomPhoenix ContactType 2 SPD19 Littelfuse, Inc. 202119 Phoenix Contact Type 2 MOV & GDT module teardownVaristor, 517 V, Disc mmMake: TDK (Epcos)LFUS: Custom-Contact Product Manager800 V Fat GDTMake: TDK (Epcos)LFUS: Custom Contact Product ManagerTechnologyFunction in ApplicationSeriesBenefitsFeaturesMOVV oltage Surge protection with thermal disconnect CustomFlexibility to of f er component that aligns with OEMs needs High Surge current withstanding and energy absorption capabilitiesGDTV oltage Surge protection with no signif icant leakage currentCustomSurge protection f or AC linesRugged ceramic/metal constructionCl i ck on the product seri es i n the tabl e below for more i nfoProtectControlSenseMOV moduleGDT module20 Littelfuse, Inc.)