(500+ Words) Electrical Abbreviation Dictionary | Acronyms

AAACAll Aluminum Alloy Conductor
AACAll Aluminum Conductor
ACAlternating Current or Auxiliary Carry
A/CAir Conditioning
ACBAir Circuit Breaker
ACCBAir Case Circuit Breaker
ACDBAlternating Current Distribution Board
ACSRAluminum Conductor Steel Reinforced
ADCAnalog to Digital Converter
AFAudio Frequence
AFCAutomated Frequency Control or Available Fault Current
AFCIArc Fault Circuit Interrupter
AGCAutomatic Gain Control
AGMAAmerican Gear Manufacturer’s Association
AHUAir Handling Unit
AICAmpere Interrupting Capacity
ALCIAppliance Leakage Current Interrupter
ALEAddress Latch Enable
ALUArithmetic Logic Unit
AMDAdvanced Micro Device
ANSIAmerican National Standards Institute
APFCAutomatic Power Factor Control
ASIAsynchronous Serial Interface
ASCIAmerican Standard Code For Information
AskAmplitude Shift Keying
ASTAAssociation of Short-circuit Testing Authorities
ATCAutomatic Temperature Control
ATSAutomatic Transfer Switch
AVRAutomatic Voltage Regulator
AWAAluminum wire Armour
AWGAmerican Wire Gauge
BElectrical Susceptance or Base
BBULBumpless Build-Up Layer
BCDBinary Coded Decimal
BGABall Grid Array
BILBreakdown Insulation Level
BJTBipolar Junction Transistor
BLACBrushless AC
BLDCBrushless DC
BMSBattery Management System
BPSKBinary Phase Shift Keying
BTBBranch Target Buffer
BTUBritish Thermal Units
CCapacitance or Capacitor or Collector or Celsius or Centigrade
CADComputer-Aided Design
CATVCable Television or Community Antennae Television
CBCircuit Breaker or Common Base
CBCUCircuit Breaker Control Unit
CBMCertified Ballast Manufacturer
CBRConstant Bitrate
CCCommon Collector
CCRCentral Control Room
CCTVClosed Circuit Television
CCUCentral Control Unit
CDACommon Drain Amplifier
CDIPCeramic Dual In-Line Package
CDMCharged-Device Model
CDMACode Division Multiple Access
CECommon Emitter or Chip Enable
CEGBCentral Electricity Generating Board
CISCComplex Instruction Set Computer
CLFCurrent Limiting Fuse
CMOSComplementary Metal Oxide Semiconductor
Cont.Continuous Quantity
COR CUCorrugated Copper
Cos φPower Factor
CPGACeramic Pin Grid Array
CPTControl Power Transformer
CPUCentral Processing Unit
CROCathode Ray Oscilloscope
CRTCathode Ray Tube
CSChip Select
CSACross-Sectional Area or Common Source Amplifier
CSICurrent Source Inverter
CSPChloro-Sulfonated Polyethylene
CSSComputerized Synchronising System
CTCurrent Transformer
CUWBCopper Wire Braid
DDegree or Diode
DACDigital to Analog Converter
DBDistribution Board
DCDirect Current
DCDBDirect Current Distribution Board
DCSDistributed Control System
DEDrive End of a shaft
DIPDual In-line Package
DMADirect Memory Access
DMSData Management System
DMTDefinite Minimum Time
DOLDirect On-Line
DPDouble Pole
DPDTDouble Pole Double Throw
DPICDouble Pole Iron Clad
DPRDividing Pulse Relay
DPSTDouble Pole Single Throw
DSSODouble Switched Socket Outlet
DTDefinite Time
DUTDevice Under Test
DWRDivided Winding Rotor
EEarth or Emitter
EBEquipment Branch
EBCDICExtended Binary Coded Decimal Interchange Coad
ECElectrical Code or Electrical Contractor or Electronic Commutator
ECCError Checking & Correction
ECGElectro Cardio Graphs
ECHAEquipment Certified for Hazardous Area
EEMUAEngineering Equipment and Materials Users Association
EFExhaust Fan or Earth Fault
EFREarth Fault Relay
EHTExtra-High Tension
EHVExtra-High Voltage
EIEMAElectrical Installation Equipment Manufacturer’s Association
EINVExtremely Inverse
ELCBEarth Leakage Circuit Breaker
ELVExtra Low voltage
EMAEthylene Methyl Acrylate
EMCElectromagnetic Compatibility
EMF or emfElectromotive Force
EMIElectromagnetic Interference or Electro Magnetic Inductor
EMTElectrical Metallic Tubing
EOSElectrostatic Overstress
EPEmergency Power
EPAElectrostatic Discharge Protected Area
EPDMEthylene Propylene Diene Monomer
EPOEmergency Power Off (Button or Switch)
EPREthylene Propylene Rubber
ERAElectrical Research Association
ERMElectronic Restart Module
ESDEmergency Shut Down or Electrostatic Discharge
ESDSElectrostatic Sensitive Device System
ESPElectric Submersible Pump
ESTExtra Super Tension
EWCElectric Water Cooler
EWSEngineering Work Station
FFuse or Frequency or Fahrenheit or Fire or Farad
FAFire Alarm
FAAFire Alarm Annunciator
FATFactory Acceptance Testing
FBAFactory Built Assemblies
FBTFlyback Transformer
FCPGAFlip Chips Pin Gird Array
FCUFeeder Control Unit
FETField Effect Transistor
FLAFull Load Amperes
FlexFlexible (use for the cable)
FMCFlexible Metal Conduit
FrResonant Frequency
FSKFrequency Shift Keying
GGround or Conductance or Gas or Generator
GCBGas Circuit Breaker
GCPGenerator Control Panel
GDTGas Discharge Tube
GFCIGround Fault Circuit Interrupter
GFIGround Fault Interrupter
GISGas-Insulated Switchgear
GOGang Operated
GORGas to Oil Ratio
GPIOGeneral Purpose Input/Output
GPSGlobal Positioning System
GRMCGalvanized Rigid Metal Conduit
GRPGlass Reinforced Plastic
GSWAGalvanised Steel Wire Armour
GSWBGalvanised Steel Wire Braid
GTG or GTGas-Turbine Generator
GTOGate turn off thyristor
HCLHydrogen Chloride, Gas or Acid
HFHigh Frequency
HIDAHold Acknowledge
HOAHand-Off-Automatic Switch
HOLDHold Indicates
HRCHigh Rupturing Capacity
HTHigh Tension
HVHigh Voltage
HVACHeating Ventilation and Air Conditioning
HzHertz (Frequency in Cycles/Second)
ICurrent or Input
IALAInternational Association of Lighthouse Authorities
IBBase Current
ICColleter Current or Integrated Circuit
ICIBDBIron Clad Distribution Board
ICSPIn-Circuit Serial Programming
ICTPIron Clad Triple Pole
ICUInstruction Control Unit
IDMTInverse Definite Minimum Time
IEEmitter Current
IECInternational Electrotechnical Commission
IEEInstitution of Electrical Engineers
IEEEInstitute of Electrical and Electronics Engineers
IGIsolated Ground
IGBTInsulated-Gate Bipolar Transistor
IHSIntegrated Heat Speaker
IMCIntermediate Metal Conduit
IMCSIntegrated Motor Control System
IMSInformation Management System
IntInterlock or Intermittent
INTAInterrupt Acknowledge
INTRInterrupt Request
IOWInput / Output Write
IPMSMInterior Permanent Magnet Synchronous Motor
IRInsulation Resistance or Infrared
IREInstitution of Radio Engineers
ISStarting Current
ISOInternational Standards Organisation
JJoule or Jump
JFETJunction Field Effect Transistor
KCMILThousand Circular Mils
KvKilo Volts
KVARKilovolt-Amperes Reactive
KWhKilo Watt Hour
LLine or Inductance or Inductor
LALightning Arrester
LANLocal Area Network
LCCLeadless Chip Carrier
LCDLiquid Crystal Display
LCS Local Control Station
LDRLight Dependent Resistor
LEDLight Emitting Diode
LFLow Frequency
LFMCLiquid Tight Flexible Metal Conduit
LLRPLow-Level Reader Protocol
LMSLoad Management System or Line Maintenance Service
LNGLiquefied Natural Gas
LOPTLine Output Transformer
LPSLightning Protection System
LRALocked Rotor Amperes
LSDLeast Significant Digit
LSFLow Smoke and Fume
LSILarge Scale Integration
LSSLoad Shedding System
LTLow Tension
LVLow Voltage
LVDTLinear Variable Differential Transformer
mMeter or Milli
MCMetal Clad Cable
MCBMain Circuit Breaker
MCCMotor Control Center
MCCBMoulded Case Circuit Breaker
MCMMulti Cavity Module
MCPMotor Circuit Protection
MCRMaximum Continuous Rating
MCUMotor Control Unit
MfMultiplying Factor
MhoUnit of Admittance
MIMineral Insulated on Machine Interface
MICMinimum Ignition Current
MISOMaster Input Slave Output
MESGMaximum Experimental Safe Gap
MLOMain Lugs Only
MMMachine Model
MMFMagneto-Motive Force
MMIMan-Machine Interface
MMSCFMillion Standard Cubic Feet
MOGMagnetic Oil Gauge
MoleMolecular Weight
MOSIMaster Output Slave Input
MOSFETMetal Oxide Semiconduction Field Effect Transistor
MOVMetal Oxide Varistor
MSMain Switch
MSDMost Significant Digit
MSIMedium Scale Integration
MSWModule Steel Work
MTMain Terminal
MTBFMean Time Between Failures
MTTRMean Time To Repair
MVMedium Voltage or Milli-Volt
MVARMega-Volt-Ampere Reactive
NNeutral or Number
NBRNitrile Butadiene Rubber
NCNormally Closed
NCTNeutral Current Transformer
NDENon-Drive End
NECNational Electrical Code
NEMANational Electrical Manufacturers Association
NERNeutral Earth Resistor
NFPANational Fire Protection Association
NINVNormal Inverse
NLNeutral Link or Night Light
NONormally Open or Number
NOxNitrogen-based Gas Emissions
NsSynchronous Speed or Motor Speed
NTSNot To Scale
OCOver Current or Open Circuit
OCBOil Circuit Breaker
OCTCOn-Circuit Tap Changer
OFOver Frequency
OHLOverhead Line
OhmResistance Unit
OIMOffshore Installation Manager
OLOver Load
OLTCOn-Load Tap Changer
OFAFForced Circulation of Internal Liquid Forced
OVOver Voltage
PPole or Power or Active Power
PAPublic Address (Use in the system)
PAMPulse or pole Amplitude Modulation
PBPush Button or Panic Button or Pull Box
PBWBPhosphor Bronze Wire Braid
PCProgrammable Controller or Personal Computer or Program Counter
PCCPoint of Common Connection or Power Control Centre 
PDPotential Difference
PDIPPlastic Dual In-Line Package
P&IDPiping and Instrument Diagram
PETPower Equipment Testing
PFPower Factor
PGAPin Grid Array
PIPOParallel In Parallel Out
PISOParallel In Serial Out
PkPeak Value
PLCProgrammable Logic Controller
PLCCPlastic Leaded Chip Carrier
PMPulse Modulation or Permanent Magnet
PMSPower Management System
PMSMPermanent Magnet Synchronous Motor
PPGAPlastic Pin Grid Array
PSKPhase Shift Keying
PSWProgram Status Word
PTPotential Transformer or Power Transformer
PTBPhysikalisch-Technische Bundesanstalt
PUPer Unit
PVCPolyvinyl Chloride
PWMPulse Width Modulation
QReactive Power or Charge
QAQA Quality Assurance
QCQuality Control
QPSKQuadrature Phase Shift Keying
RResistance or Resistor or Reset or Remote or Rectifier
RAMRandom Access Memory
RCBCResidual Current Circuit Breaker
RCCBResidual Current Circuit Breaker
RCDResidual Current Device
RCURemote Control Unit
REFRestricted Earth Fault
RFIDRadio Frequency Identification
RISCReduced Instruction Set Computer
RLARated Load Ampere
RMCRigid Metal Conduit
RMGRing Main Gear
RMSRoot Mean Square
RMURing Main Unit
RNCRigid Non-Metallic Conduit
ROMRead-Only Memory
RPRReverse Power Relay
RSRecommended Standard
RTDResistance Temperature Detector
RTSRemote Test Station
RTURoof Top Unit or Remote Transmitter Unit
SSet or Apparent Power or Start or Slip or Switch
SBSwitch Board
SCShort Circuit
SCADASupervisory Control And Data Acquisition
SCFStandard Cubic Feet
SCIMSquirrel Cage Induction Motor
SCKSerial Clock
SCRSilicon Controlled Rectifier
SEBService End Line Box or Service Electrical Box
SECSingle Edge Cartridge or Single Edge Contact
SECTSkin Effect Current Trace
SELVSafety extra-low voltage
SF6Sulphur Hexa- Fluoride
SFUSwitch Fuse Unit
SIInternational System
SIDSingle Input Data or Serial Input Data
SPSpare or Single Phase or Single Pole
SPDTSingle Pole Double Throw
SPISerial Peripheral Interface
SIPISerial In Parallel In
SIPOSerial In Parallel Out
SISOSerial In Serial Out
SMPSSwitch Mode Power Supply
SODSerial Output Data
SPSingle Pole
SPMSMSurface Permanent Magnet Synchronous Motor
SPSTSingle Pole Single Throw
SPTStranded Parallel Thermoplastic
SRMSwitched Reluctance Motor
SSISmall Scale Integration
SSRSub Synchronous Resonance or Solid State Relay
SSSOSingle Switched Socket Outlet
STShunt Trip or Super Tension
STGSteam Turbine Generator
STRStatimax Trip Release
SWASteel Wire Armour
SyRMSynchronous Reluctance Motor
TTime or Temperature or Timer
TBTerminal Box or Block
TCTrip Circuit
TCPTurbine Control Panel
TCSTrip Circuit Supervision
TDTunnel Diode
TDRRTime-Delayed Restart Relay
TEFCTotally Enclosed Fan Cooled
TESFCTotally Enclosed Separate Fan Cooled
TGBTelecommunications Grounding Busbar
THFTelephone Harmonic Factor
TLSBTranslation Look A-Side Buffer
TMCBThermal Magnetic Circuit Breaker
TOPTurbine Operating Temperature
TPTriple Pole
TPNThree-Phase and Neutral
TPPLTotal Plant Peak Load
TPRLTotal Plant Running Load
Trap ITrap Interrupt
TTLTransistor-Transistor Logic
TMCBThermal Magnetic Circuit Breaker
TPDTTriple Pole Double Throw
TPICTriple Pole Iron Clad
TPSTriple Pole Switch
TPSTTriple Pole Single Throw
TRSTough Rubber Sheathed
TVSDTransient Voltage Suppression Diode
UVoltage (Use for Energy)
UARTUniversal Asynchronous Receiver and Transmitter
UCUnder Current
UJTUni Junction Transistor
UCPUnit Control Panel
UDSUniform Drawing System
UELUpper Explosive Limit
UFUnder Frequency
UGUnder Ground
UHFUltra-High Frequency
ULUnderload or Underwriters Laboratory
ULSIUltra Large Scale Integration
UPSUninterruptible Power Supply
USARTUniversal Synchronous and Asynchronous Receiver and Transmitter
USBUniversal Serial Bus
UVUnder Voltage or Ultra-Violet
VVoltage or Volt
VacAlternating Voltage
VArReactive Volt-Ampere
VCBVacuum Circuit Breaker
VCRVideo Cassette Recorder
VdcDirect Voltage
VDRVoltage-Dependent Resistor
VDUVisual Display Unit
VFDVariable Frequency Drive
VFDPVariable Frequency Drive Panel
VHFVery High Frequency
VIFVirtual Interrupt Flag
VIPVirtual Interrupt Pending
VIRVulcanized Indian Rubber
VSDVariable Speed Drive
VSDSVariable Speed Drive System
VSIVoltage Source Inverter
VTVoltage Transformer
VVRVoltage Variable Resistor
WWatt or Wire or Frequency (in radian/second)
Wdg.Winding (Use in a machine)
WHWater Heater
WHRUWaste Heat Recovery Unit
WPWeather Proof
WRIMWound Rotor Induction Motor
WRSMWound Rotor Synchronous Motor
XLPACross-Linked polyalkene
XLPECross-Linked Polyethylene
ZHZero Halogens (use for cables)

For Example:

What does DC stand for?

DC stand for "Direct Current".

You can use this as short hand Electronics and electrical dictionary.

I’m listing down those abbreviations in alphabetical order. Along with the full form, some of the abbreviations are linked to an article that will describe that terminology in detail like definitions, formulas, and usages.

Also, in industrial automation study, we used different short abbreviations. You can read the Industrial Automation Dictionary.

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