Electrical & Electronics Abbreviations & Full forms : A-Z quick notes

Electrical Abbreviations and Acronyms are used very often in the field of electrical industrial.

The page contains a list of abbreviations and its full forms, which are commonly used in electrical and electronics engineering.

 Abbreviations Full Form
A Ampere
AAAC All Aluminum Alloy Conductor
AAC All Aluminum Conductor
AC Alternating Current
ACCB Air Case Circuit Breaker
ACDB Alternating Current Distribution Board
ACSR Aluminium Conductors Steel Reinforced
ADC Analog To Digital Converter
AFC Automated Frequency Control
AFC Available Fault Current
AFCI Arc Fault Circuit Interrupter
AH Ampere Hour
AHU Air Handling Unit
AIC Ampere Interrupting Capacity
AL Aluminum
ALCI Appliance Leakage Current Interrupter
ATS Automatic Transfer Switch
AWG American Wire Gauge
BLAC Brushless AC
BLDC Brushless DC
BLDM Brushless DC Motor
C Capacitance
CKT Circuit
CPT Control Power Transformer
CT Current Transformer
DAC Digital To Analog Converter
DB Distribution Board
db Decibel
DC Direct Current
DCDB Direct Current Distribution Board
DOL Direct ON Line
DP Double Pole
DPIC Double Pole Iron Clad
EC Electronic Commutator
EF Exhaust Fan
ELCB Earth Leakage Circuit Breaker
F Fuse
f Farad
FBT Flyback Transformer
FLA Full Load Amperes
FMC Flexible Metal Conduit
GDT Gas Discharge Tube
GFCI Ground Fault Circuit Interrupter
GFI Ground Fault Interrupter
GIS Gas Insulated Switchgear
GN Ground
HT High Tension
HZ Hertz
I Current
ICDB Iron Clad Distribution Board
ICSP In Circuit Serial Programming
IG Isolated Ground
IMC Intermediate Metal Conduit
IPMSM Interior Permanent Magnet Synchronous Motor
KV Kilo Volts
KVA Kilo Volt Amperes
Kvar Kilo Volt Amperes Reactive
KW Kilo Watt
KWH Kilo Watt Hour
L Inductance
LA Lightning Arrester
LED Light Emitting Diode
LDR Light Dependent Resistor
LOPT Line Output Transformer
LPS Lightning Protection System
LRA Locked Rotor Amperes
LT Low Tension
LVDT Linear Variable Differential Transformer
MCB Miniature Circuit Breaker
MCC Motor Control Center Panel
MCCB Moulded Case Circuit Breaker
MCP Motor Circuit Protection
MF Multiplying Factor
MISO Master Input Slave Output
MOSI Master Output Slave Input
MOV Metal oxide varistor
MS Main Switch
MVA Mega Volt Amperes
Mvar Mega Volt Amperes Reactive
MW Megawatt
NC Normally Closed
NCT Neutral Current Transformer
NL Neutral Link
NO Normally Open
OCTC On-circuit tap changer
OLTC On-load tap changer
P Pole
PB Push Button
PCC Power Control Centre Panel
PDP Power Distribution Panel
PM Permanent Magnet
PMSM Permanent Magnet Synchronous Motor
PT Potential Transformer
PVC Poly Vinyl Chloride
Q Charge
R Resistance
RCBO Residual Current Circuit Breaker with Overload Protection
RCCB Residual Current Circuit Breaker
RCD Residual Current Device
RFID Radio Frequency Identification
RLA Rated Load Amperes
RMC Rigid Metal Conduit
RMG Ring Main Gear
RMU Ring Main Unit
RNC Rigid Non Metallic Conduit
SB Switch Board
SCIM Squirrel Cage Induction Motor
SCK Serial Clock
SCR Silicon Controlled Rectifier
SFU Switch Fuse Unit
SP Single Pole
SPDT Single Pole Double Throw
SPI Serial Peripheral Interface
SPMSM Surface Permanent magnet Synchronous Motor
SPST Single Pole Single Throw
SPT Stranded Parallel Thermoplastic
SRM Switched Reluctance Motor
STR Statimax Trip Release
SW Switch
SWG Standard Wire Gauge
SyRM Synchronous Reluctance Motor
TTL Transistor-Transistor Logic
TMCB Thermal Magnetic Circuit Breaker
TPDT Triple Pole Double Throw
TPIC Triple Pole Iron Clad
TPS Triple Pole Switch
TPST Triple Pole Single Throw
TRS Tough Rubber Sheathed
TVS-Diode Transient Voltage Suppression Diode
UART Universal Asynchronous Receiver and Transmitter
UDS Uniform Drawing System
UG Under Ground
USART Universal Synchronous and Asynchronous Receiver and Transmitter
USB Universal Serial Bus
V Volts
VA Volt Ampere
var Volt Ampere Reactive
VCB Vacuum Circuit Breaker
VFDP Variable Frequency Drive Panel
VIR Vulcanized Indian Rubber
VT Voltage Transformer
W watt
WRIM Wound Rotor Induction Motor
WRSM Wound Rotor Synchronous Motor
XLPE Cross-linked Polyethylene

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79 Responses

  1. shital says:

    what is full form of SFU in electrical

  2. Mohammad wasim says:


  3. kishore says:

    what is rmg

  4. Shrayansh goinka says:

    What is the full form of ‘n’ and ‘e’

    • admin says:

      n – Commonly used to represent nano values, 10^-9.
      e – It is used as induced e.m.f, or an elementary charge e = 1.602 x 106-19 and also as an exponential function in equations.
      These letters may also have used an abbreviation for some other terms too.

  5. Amod kumar says:


  6. SANJAYSAROJ says:


  7. Monu Chauhan says:


  8. Lallan Prasad says:

    It’s nice. …
    I want more. ..

  9. Lallan Prasad says:

    I want more knowledge of electrical and electronic
    Components.. .

  10. shiva A says:

    what is full form of MIVC in partial discharge
    what is full form of ICM compact in partial discharge

  11. Khalid says:

    What means of ohms

  12. akash kumar says:


  13. ALOK SINGH says:

    D. o. r. Thanks ka full form

  14. Pradeep singh says:

    Full form of EB in mobile towers

  15. sudeesh Kumar says:

    Electrician full form

  16. KKMD says:

    Why is there no mention of Watts or W or any combination of other letters with W in this lis?

  17. akash says:

    what’s the full form of Npdb ?

  18. islam says:

    what is hp

  19. vikash says:

    What is full form of BCR

  20. vishal sharma says:


  21. Karthik says:

    D.O.R Full ka Nam ??

  22. Ketan solanki says:

    Full form of x’mer

  23. Ravi Kant says:

    what is vcc

  24. Saikiran says:

    I want this pdf

  25. TARUN PRAKASH says:

    What’s full form of COL.NO. 12/c IN Electrical diagram

  26. Talha says:

    N. L
    L. D. R
    V. A
    Full form plz

  27. Ashok mohanty says:

    very nice your full form

  28. Ashraf says:

    St full form

  29. Shubham says:

    What is full form ABC cable

  30. Carole says:

    I have a U.S. lighting plan with ‘UDL” next to the recessed cans, “UDS”(sconce maybe). what does that mean?

    • admin says:

      UDS means Uniform Drawing System, it’s a standardized guideline used for building designs.
      Are sure its UDL. I doubt it is UDI – Unique Device Identification.

  31. jay patel says:

    What is the full form of gis

  32. Ganesan says:


  33. Venky says:

    Good and very nice

  34. JITHNJITHU says:



    What’s full form of UPS

  36. Eswar konna says:

    What is the full form of spt

  37. Kalyan says:

    What is the off

  38. H Nayak says:

    What was the full form of ‘SMSB’?

  39. Edward says:

    Admin how about the ff.:


    Thank you for what you will answer.

  40. Avijit says:

    V L E FULL FROM please my email

  41. Pramod says:

    What is the full form of dBM, ISM, BER

    • admin says:

      dBm – unit level for power ratio expressed in decibels (dB) with reference to one milliwatt (mW).
      ISM band – Industrial, Scientific, and Medical band (a portion of radio spectrum).
      BER – Bit Error Rate.

  42. Krishna kanta taye says:

    What is full from GO& DO

    • admin says:

      GO – Gang-operated; GO switch – Gang operated switch is commonly used Air Breaker in HT Lines, which has three separate switches for each phase of the 3 phase line that is operated as a group from a single control.
      DO – Drop out; DO switch or DO Fuse – A combination of a fuse and a switch used to protect distribution transformers from current surges and overloads.

  43. Manu says:

    Full form of VIR , OLRC , RCC in electrical

    • admin says:

      Are you looking for terms related to wiring?
      VIR – Vulcanized Indian Rubber
      RCC – Reinforced Cement Concrete
      OLRC also related to wiring?

  44. Mwiche Lumbeta says:

    What is Full form of LTAC, LTDB in electrical

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