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    开关是在电路中控制电流流动的关键组件。根据外部因素（如用户或机械部件的物理交互）可以打断或完成电气连接。开关有各种类型和配置，以满足不同的应用和操作机制。 开关的分类通常基于其执行器的物理样式或形式，执行器负责启动开关动作。执行器可以包括按钮、切换器、摇杆、滑块、旋钮、触摸板甚至是接近传感器。执行器的设计决定了用户体验和易用性。 此外，开关可以根据其特定的应用或目的进行分类。例如，有专门用于工业控制面板、汽车仪表盘、家用电器、计算机键盘或电子设备的开关。每种开关都经过精心设计以满足预期应用的独特要求和标准。 开关可以通过各种方式激活，包括用户的手指或拇指、磁场或机械部件的运动。某些开关依靠手动操作，用户通过与执行器的物理交互来打开或关闭电路。相比之下，其他开关可能会被磁力或机械部件的运动触发，以响应特定条件或事件，提供自动控制。 开关在确保电气系统安全高效运行方面起着至关重要的作用。通过控制电流流动，它们使用户能够根据需要打开或关闭设备、调整设置或激活特定功能。此外，开关有助于提供便利性、人体工程设计和整体系统可靠性。 总而言之，开关是多功能设备，可以打断或完成电路。它们根据执行器的物理样式或形式进行区分，并针对具体应用进行设计。无论是通过用户的交互、磁力还是机械运动来激活，开关都能提供控制功能，并促进各个领域电气系统的运行。

    Audio ProductsAccessoriesAlarms, Buzzers, and SirensAmplifiersBuzzer Elements, Piezo BendersMicrophonesSpeakersCable AssembliesBarrel Connector CablesBarrel Audio CablesBarrel Power CablesBetween Series Adapter CablesCircular Cable AssembliesCoaxial Cables (RF)D-Shaped, Centronics CablesD-Sub CablesFiber Optic CablesFirewire Cables (IEEE 1394)Flat Flex Jumpers, Cables (FFC, FPC)Flat Flex Ribbon Jumpers, CablesJumper Wires, Pre-Crimped LeadsLGH CablesModular CablesPluggable CablesPower, Line Cables and Extension CordsRectangular Cable AssembliesSmart CablesSolid State Lighting CablesSpecialized Cable AssembliesUSB CablesVideo Cables (DVI, HDMI)CapacitorsAccessoriesAluminum - Polymer CapacitorsAluminum Electrolytic CapacitorsCapacitor Networks, ArraysCeramic CapacitorsElectric Double Layer Capacitors (EDLC), SupercapacitorsFilm CapacitorsMica and PTFE CapacitorsNiobium Oxide CapacitorsSilicon CapacitorsTantalum - Polymer CapacitorsTantalum CapacitorsThin Film CapacitorsTrimmers, Variable CapacitorsCircuit ProtectionCircuit BreakersCircuit Protection AccessoriesElectrical, Specialty FusesFuseholdersFusesGas Discharge Tube Arresters (GDT)Ground Fault Circuit Interrupter (GFCI)Inrush Current Limiters (ICL)Lighting ProtectionPTC Resettable FusesSurge Suppression ICsThermal Cutoffs (Thermal Fuses)Transient Voltage Suppressors (TVS)Mixed TechnologySurge Protection Devices (SPDs)TVS DiodesThyristorsVaristors, MOVsConnectors, InterconnectsAC Power ConnectorsPlugs and ReceptaclesPower Entry Connector AccessoriesPower Entry Modules (PEM)Backplane ConnectorsARINCARINC InsertsBackplane Connector AccessoriesBackplane Connector ContactsBackplane Connector HousingsDIN 41612Hard Metric, StandardSpecializedBanana and Tip ConnectorsBanana and Tip Connector AccessoriesBanana and Tip Connector AdaptersBinding PostsJacks, PlugsBarrel ConnectorsAudio ConnectorsBarrel Connector AccessoriesBarrel Connector AdaptersPower ConnectorsBlade Type Power ConnectorsBlade Type Power Connector AccessoriesBlade Type Power Connector AssembliesBlade Type Power Connector ContactsBlade Type Power Connector HousingsCard Edge ConnectorsCard Edge Connector AccessoriesCard Edge Connector AdaptersCard Edge Connector ContactsCard Edge Connector HousingsEdgeboard ConnectorsCircular ConnectorsBackshells and Cable ClampsCircular Connector AccessoriesCircular Connector AdaptersCircular Connector AssembliesCircular Connector ContactsCircular Connector HousingsCoaxial Connectors (RF)Coaxial Connector (RF) AccessoriesCoaxial Connector (RF) AdaptersCoaxial Connector (RF) AssembliesCoaxial Connector (RF) ContactsCoaxial Connector (RF) TerminatorsContactsContacts, Spring Loaded (Pogo Pins), and PressureLeadframeMulti PurposeD-Sub, D-Shaped ConnectorsCentronics ConnectorsD-Sub Connector AssembliesD-Sub, D-Shaped Connector AccessoriesD-Sub, D-Shaped Connector AdaptersD-Sub, D-Shaped Connector Backshells, HoodsD-Sub, D-Shaped Connector ContactsD-Sub, D-Shaped Connector HousingsD-Sub, D-Shaped Connector JackscrewsD-Sub, D-Shaped Connector TerminatorsFFC, FPC (Flat Flexible) ConnectorsFFC, FPC (Flat Flexible) Connector AccessoriesFFC, FPC (Flat Flexible) Connector AssembliesFFC, FPC (Flat Flexible) Connector ContactsFFC, FPC (Flat Flexible) Connector HousingsFiber Optic ConnectorsFiber Optic Connector AccessoriesFiber Optic Connector AdaptersFiber Optic Connector AssembliesFiber Optic Connector HousingsHeavy Duty ConnectorsHeavy Duty Connector AccessoriesHeavy Duty Connector AssembliesHeavy Duty Connector ContactsHeavy Duty Connector FramesHeavy Duty Connector Housings, Hoods, BasesHeavy Duty Connector Inserts, ModulesKeystone ConnectorsKeystone Connector AccessoriesKeystone Faceplates, FramesKeystone InsertsLGH ConnectorsLugsArrays, Edge Type, Mezzanine (Board to Board)Board In, Direct Wire to BoardBoard Spacers, Stackers (Board to Board)Free Hanging, Panel MountHeaders, Male PinsHeaders, Receptacles, Female SocketsHeaders, Specialty PinRectangular Connector AccessoriesRectangular Connector AdaptersRectangular Connector ContactsRectangular Connector HousingsSpring LoadedMemory ConnectorsInline Module SocketsMemory Connector AccessoriesPC Card SocketsPC Cards - AdaptersModular ConnectorsModular Connector AccessoriesModular Connector AdaptersModular Connector JacksModular Connector Jacks With MagneticsModular Connector Plug HousingsModular Connector PlugsModular Connector Wiring BlocksModular Connector Wiring Blocks AccessoriesPhotovoltaic (Solar Panel) ConnectorsPhotovoltaic (Solar Panel) Connector AccessoriesPhotovoltaic (Solar Panel) Connector AssembliesPhotovoltaic (Solar Panel) Connector ContactsPluggable ConnectorsPluggable Connector AccessoriesPluggable Connector AssembliesSockets for ICs, TransistorsIC SocketsSocket AccessoriesSocket AdaptersSolid State Lighting ConnectorsSolid State Lighting Connector AccessoriesSolid State Lighting Connector AssembliesSolid State Lighting Connector ContactsTerminal BlocksBarrier BlocksDin Rail, ChannelHeaders, Plugs and SocketsInterface ModulesPanel MountPower DistributionSpecializedTerminal Block AccessoriesTerminal Block AdaptersTerminal Block ContactsWire to BoardTerminalsBarrel, Bullet ConnectorsFoil ConnectorsHousings, BootsKnife ConnectorsMagnetic Wire ConnectorsPC Pin Receptacles, Socket ConnectorsPC Pin, Single Post ConnectorsQuick Connects, Quick Disconnect ConnectorsRectangular ConnectorsRing ConnectorsScrew ConnectorsSolder Lug ConnectorsSpade ConnectorsSpecialized ConnectorsTerminal AccessoriesTerminal AdaptersTurret ConnectorsWire Pin ConnectorsWire Splice ConnectorsWire to Board ConnectorsUSB, DVI, HDMI ConnectorsUSB, DVI, HDMI Connector AccessoriesUSB, DVI, HDMI Connector AdaptersUSB, DVI, HDMI Connector AssembliesCrystals, Oscillators, ResonatorsCrystal, Oscillator, Resonator AccessoriesCrystalsOscillatorsPin Configurable/Selectable OscillatorsProgrammable OscillatorsResonatorsStand Alone ProgrammersVCOs (Voltage Controlled Oscillators)Development Boards, Kits, ProgrammersAccessoriesEvaluation BoardsAnalog to Digital Converters (ADCs) Evaluation BoardsAudio Amplifier Evaluation BoardsDC/DC & AC/DC (Off-Line) SMPS Evaluation BoardsDigital to Analog Converters (DACs) Evaluation BoardsEmbedded Complex Logic (FPGA, CPLD) Evaluation BoardsEmbedded MCU, DSP Evaluation BoardsEvaluation and Demonstration Boards and KitsExpansion Boards, Daughter CardsLED Driver Evaluation BoardsLinear Voltage Regulator Evaluation BoardsOp Amp Evaluation BoardsRF Evaluation and Development Kits, BoardsRFID Evaluation and Development Kits, BoardsSensor Evaluation BoardsProgrammers, Emulators, and DebuggersProgramming Adapters, SocketsSoftware, ServicesDiscrete Semiconductor ProductsCurrent Regulation - Diodes, TransistorsDiodesBridge RectifiersRF DiodesRectifiersDiode ArraysSingle DiodesVariable Capacitance (Varicaps, Varactors)ZenerSingle Zener DiodesZener Diode ArraysPower Driver ModulesThyristorsDIACs, SIDACsSCRsSCRs - ModulesTRIACsTransistorsBipolar (BJT)Bipolar RF TransistorsBipolar Transistor ArraysBipolar Transistor Arrays, Pre-BiasedSingle Bipolar TransistorsSingle, Pre-Biased Bipolar TransistorsFETs, MOSFETsFET, MOSFET ArraysRF FETs, MOSFETsSingle FETs, MOSFETsIGBTsIGBT ArraysIGBT ModulesSingle IGBTsJFETsProgrammable UnijunctionSpecial PurposeEmbedded ComputersEmbedded Computer AccessoriesEmbedded Computer Interface BoardsSingle Board Computers (SBCs)Fans, Thermal ManagementFansAC FansDC Brushless Fans (BLDC)Fan AccessoriesFan CordsFinger Guards, Filters & SleevesHeat Tape, Heat Blankets and HeatersThermalAdhesives, Epoxies, Greases, PastesHeat Pipes, Vapor ChambersHeat SinksLiquid Cooling, HeatingPads, SheetsThermal AccessoriesThermoelectric, Peltier AssembliesThermoelectric, Peltier ModulesFiltersCable FerritesCeramic FiltersCommon Mode ChokesDSL FiltersEMI/RFI Filters (LC, RC Networks)Feed Through CapacitorsFerrite Beads and ChipsFerrite Disks and PlatesFilters AccessoriesMonolithic CrystalsPower Line Filter ModulesRF FiltersSAW FiltersInductors, Coils, ChokesAdjustable InductorsArrays, Signal TransformersDelay LinesFixed InductorsWireless Charging CoilsIndustrial Automation and ControlsAccessoriesCable and Hose Carriers, Drag ChainsCam PositionersControllersControllers - AccesControllerssoriesControllers - CabControllersle AssembliesControllers - Liquid, LevelControllers - Machine SafetyControllers - PLC ModulesControllers - Process, TemperatureControllers - Programmable (PLC, PAC)Greases and LubricantsHuman Machine Interface (HMI)Human Machine Interface (HMI)Human Machine Interface (HMI) - AccessoriesIndustrial EquipmentIndustrial LightingIndustrial Lighting - Pick to LightIndustrial Lighting - Task LightingIndustrial Lighting ControlLighting ControlLighting Control - AccessoriesIndustrial PCsLiquid FiltrationMachine SafetyMachine Safety - AccessoriesMachine Safety - Bumpers and EdgesMachine Safety - Laser ScannersMachine Safety - Light CurtainsMachine Safety - MatsMachine VisionMachine Vision - Bar Code ReadersMachine Vision - Cameras/SensorsMachine Vision - Control/ProcessingMachine Vision - LightingMonitorsMonitor - Current/Voltage TransducerMonitor - Relay OutputPanel MetersMetersPanel Meters - AccessoriesPanel Meters - Counters, Hour MetersPneumatics, HydraulicsPneumatics, Hydraulics - AccessoriesPneumatics, Hydraulics - Actuators/CylindersPneumatics, Hydraulics - Fittings, Couplings, and DistributorsPneumatics, Hydraulics - Preparation/TreatmentPneumatics, Hydraulics - Shock Absorbers, DampersPneumatics, Hydraulics - Tubing, Hose, PipingPneumatics, Hydraulics - Valves and ControlProtection Relays & SystemsRoboticsRobotics - AccessoriesRobotics - End EffectorsRobotics - RobotsSignal Conditioners and IsolatorsSpecializedStackable Tower Lighting, Beacons, and ComponentsTime Delay RelaysIntegrated Circuits (ICs)Audio Special PurposeClock/TimingApplication Specific Clock/TimingClock Buffers, DriversClock Generators, PLLs, Frequency SynthesizersDelay LinesIC BatteriesProgrammable Timers and OscillatorsReal Time ClocksData AcquisitionADCs/DACs - Special PurposeAnalog Front End (AFE)Analog to Digital Converters (ADC)Digital PotentiometersDigital to Analog Converters (DAC)Touch Screen ControllersEmbeddedApplication Specific MicrocontrollersCPLDs (Complex Programmable Logic Devices)DSP (Digital Signal Processors)FPGAs (Field Programmable Gate Array)FPGAs (Field Programmable Gate Array) with MicrocontrollersMicrocontrollersMicrocontrollers, Microprocessor, FPGA ModulesMicroprocessorsPLDs (Programmable Logic Device)System On Chip (SoC)InterfaceAnalog Switches - 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SpecializedPower Over Ethernet (PoE) ControllersPower Supply Controllers, MonitorsRMS to DC ConvertersSpecial Purpose RegulatorsSupervisorsThermal ManagementV/F and F/V ConvertersVoltage ReferenceVoltage Regulators - DC DC Switching RegulatorsVoltage Regulators - Linear + SwitchingVoltage Regulators - Linear Regulator ControllersVoltage Regulators - Linear, Low Drop Out (LDO) RegulatorsSpecialized ICsIsolatorsDigital IsolatorsIsolators - Gate DriversOptoisolatorsLogic Output OptoisolatorsTransistor, Photovoltaic Output OptoisolatorsTriac, SCR Output OptoisolatorsSpecial Purpose IsolatorsMagnetics - Transformer, Inductor ComponentsBobbins (Coil Formers), Mounts, HardwareFerrite CoresMagnetic WireMemory Cards, ModulesMemory - ModulesMemory Card, Module AccessoriesMemory CardsSolid State Drives (SSDs), Hard Disk Drives (HDDs)SpecializedUSB Flash DrivesOptoelectronicsBallasts, InvertersCircuit Board Indicators, Arrays, Light Bars, Bar GraphsCold Cathode Fluorescent (CCFL) & UV LampsDisplay BacklightsDisplay Bezels, LensesDisplay, Monitor - LCD Driver/ControllerElectroluminescentFiber Optic AttenuatorsFiber Optic ReceiversFiber Optic Switches, Multiplexers, DemultiplexersFiber Optic Transceiver ModulesFiber Optic Transmitters - DiscreteFiber Optic Transmitters - Drive Circuitry IntegratedHeNe Laser HeadsHeNe Laser System AccessoriesHeNe Laser SystemsIncandescent, Neon LampsLCD, OLED Character and NumericLCD, OLED, GraphicLED Addressable, SpecialtyLED COBs, Engines, Modules, StripsLED Character and NumericLED Color LightingLED Dot Matrix and ClusterLED Emitters - Infrared, UV, VisibleLED Indication - DiscreteLED Lighting KitsLED Thermal ProductsLED White LightingLamp ReplacementsLaser Diode, Module AccessoriesLaser Diodes, Laser Modules - Laser Delivery, Laser FibersLaser Diodes, ModulesLensesLight PipesLighting FixturesOptoelectronics AccessoriesOptomechanicalPanel Indicators, Pilot LightsReflectorsRemote Phosphor Light SourceSpacers, StandoffsTouch Screen OverlaysVacuum Fluorescent (VFD)Xenon LightingPotentiometers, Variable ResistorsAccessoriesAdjustable Power ResistorJoystick PotentiometersRotary Potentiometers, RheostatsScale DialsSlide PotentiometersThumbwheel PotentiometersTrimmer PotentiometersValue Display PotentiometersPower Supplies - Board MountAC DC ConvertersBoard Mount Power Supply AccessoriesDC DC ConvertersLED DriversPower Supplies - External/Internal (Off-Board)AC AC Wall Power AdaptersAC DC Configurable Power Supplies (Factory Assembled)AC DC Configurable Power Supply ChassisAC DC Configurable Power Supply ModulesAC DC ConvertersAC DC Desktop, Wall Power AdaptersDC DC ConvertersExternal/Internal Power Supply AccessoriesIndustrial, DIN Rail Power SuppliesLED DriversPower over Ethernet (PoE)RF and WirelessAttenuatorsBalunRF AccessoriesRF AmplifiersRF AntennasRF Circulators and IsolatorsRF DemodulatorsRF DetectorsRF Directional CouplerRF Front End (LNA + PA)RF Misc ICs and ModulesRF MixersRF ModulatorsRF MultiplexersRF Power Controller ICsRF Power Dividers/SplittersRF Receiver, Transmitter, and Transceiver Finished UnitsRF ReceiversRF ShieldsRF SwitchesRF Transceiver ICsRF Transceiver Modules and ModemsRF TransmittersRFI and EMI - Contacts, Fingerstock and GasketsRFI and EMI - Shielding and Absorbing MaterialsRFID AccessoriesRFID AntennasRFID Reader ModulesRFID Transponders, TagsRFID, RF Access, Monitoring ICsSubscriber Identification Module (SIM) CardsRelaysAutomotive RelaysContactors (Electromechanical)Contactors (Solid State)High Frequency (RF) RelaysI/O Relay Module RacksI/O Relay ModulesPower Relays, Over 2 AmpsReed RelaysRelay SocketsRelays AccessoriesSafety RelaysSignal Relays, Up to 2 AmpsSolid State RelaysResistorsChassis Mount ResistorsChip Resistor - Surface MountResistor Networks, ArraysResistors AccessoriesSpecialized ResistorsThrough Hole ResistorsSensors, TransducersColor SensorsColor Sensors - IndustrialCurrent SensorsEncodersEncoders - IndustrialFloat, Level SensorsFloat, Level Sensors - IndustrialFlow SensorsFlow Sensors - IndustrialForce SensorsForce Sensors - IndustrialGas SensorsHumidity, Moisture SensorsIrDA Transceiver ModulesLVDT Transducers (Linear Variable Differential Transformer)Magnetic SensorsCompass, Magnetic Field (Modules)Linear, Compass (ICs)Position, Proximity, Speed (Modules)Position, Proximity, Speed (Modules) - IndustrialSwitches (Solid State)MagnetsMulti Purpose MagnetsSensor Matched MagnetsMotion SensorsAccelerometersGyroscopesIMUs (Inertial Measurement Units)InclinometersOptical Motion SensorsTilt SwitchesVibration SensorsMultifunctionOptical SensorsAmbient Light, IR, UV SensorsCamera ModulesDistance MeasuringImage Sensors, CameraPhoto Detectors - CdS CellsPhoto Detectors - Logic OutputPhoto Detectors - Remote ReceiverPhotodiodesPhotoelectric, IndustrialPhotointerrupters - Slot Type - Logic OutputPhotointerrupters - Slot Type - Transistor OutputPhotonics - Counters, Detectors, SPCM (Single Photon Counting Module)PhototransistorsReflective - Analog OutputReflective - Logic OutputParticle, Dust SensorsPosition SensorsAngle, Linear Position MeasuringPressure Sensors, TransducersPressure Sensors, Transducers - IndustrialProximity SensorsProximity Sensors - IndustrialProximity/Occupancy Sensors Finished UnitsSensor Cable AccessoriesSensor Cable AssembliesSensor Interface Junction BlocksSensor, Transducer AccessoriesSensor, Transducer AmplifiersShock SensorsSolar CellsSpecialized SensorsStrain GaugesTemperature SensorsAnalog and Digital OutputAnalog and Digital Output - IndustrialNTC ThermistorsPTC ThermistorsRTD (Resistance Temperature Detector)Thermocouples, Temperature ProbesThermostats - MechanicalThermostats - Mechanical - IndustrialThermostats - Solid StateTouch SensorsUltrasonic Receivers, TransmittersUltrasonic Receivers, Transmitters - Industrial
    SwitchesAccessoriesAccessories - Boots, SealsAccessories - CapsCable Pull SwitchesConfigurable Switch ComponentsConfigurable Switch Components - BodyConfigurable Switch Components - Contact BlockConfigurable Switch Components - Illumination SourceConfigurable Switch Components - LensDIP SwitchesDisconnect Switch ComponentsEmergency Stop (E-Stop) SwitchesInterlock SwitchesKeylock SwitchesKeypad SwitchesLimit SwitchesMagnetic, Reed SwitchesNavigation Switches, JoystickProgrammable Display SwitchesPushbutton SwitchesPushbutton Switches - Hall EffectRocker SwitchesRotary SwitchesSelector SwitchesSlide SwitchesTactile SwitchesThumbwheel SwitchesToggle SwitchesTransformersAudio TransformersCurrent Sense TransformersIsolation Transformers and Autotransformers, Step Up, Step DownPower TransformersPulse TransformersSpecialty TransformersSwitching Converter, SMPS TransformersTransformers AccessoriesUncategorizedUnclassified

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