300 Electrical Abbreviations and Full Forms

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electrical abbreviations and full forms, electrical full forms, mcb full form, mccb full form, rccb full form, elcb full form, acb full form, rcbo full form, ups full form, dp full form
300 Electrical Abbreviations and Full Forms

Electrical Abbreviations and Full Forms | Full Form of MCB, MCCB, RCCB, RCBO, ELCB, ACB, DP and UPS | In this post we have described the subject of electrical abbreviations and full full forms. Do you know why we have been using electrical abbreviations and full forms in electrical drawing? In electrical drawing, we have use short name(abbreviation) for the electrical components and equipments. If you want to read electrical drawings or you are a electrical engineer, you must know about electrical full forms.

Circuit Breakers Electrical Full Form


We should have know full forms about MCB, MCCB, RCCB, RCBO, ELCB, OCB, VCB and ACB to read a electrical drawings and attend the interviews. In the electrical full forms, we must know completely circuit breakers first. Because, in electrical engineers interviews recruiter asks questions about circuit breakers full forms.
MCB full form – Miniature Circuit Breaker.
MCCB full form – Moulded Case Circuit Breaker.
RCCB full form – Residual Current Circuit Breaker.
RCBO full form – Residual Current Circuit Breaker with Overload Protection.
ELCB full form – Earth Leakage Circuit Breaker.
OCB full form – Oil Circuit Breaker.
VCB full form – Vacuum Circuit Breaker.
ACB full form – Air Circuit Breaker.

Basic Electrical Term Full Forms


Electrical abbreviations of basic electrical terms are V, A, P, E, N, C, R, AC, DC, LT, HT, ELV, LV, MV, HV and EHV. Volt, ampere, power, earth, neutral, capacitor, resistor, alternating current, direct current, low voltage, high voltage, extra low voltage, low voltage, mega voltage, high voltage and extra high voltage are electrical full forms of the above electrical abbreviations.

Electrical Abbreviations and Full Forms


In below chart we have described about electrical full forms completely.

Example :
UPS full form – Uninterrupted Power Supply.
SP full form – Single Pole.
DP full form – Double Pole.
TP full form – Triple Pole.

What is the full form of circuit breakers


MCB full form – Miniature Circuit Breaker, MCCB full form – Moulded Case Circuit Breaker, RCCB full form – Residual Current Circuit Breaker, RCBO full form – Residual Current Circuit Breaker with Overload Protection, ELCB full form – Earth Leakage Circuit Breaker, OCB full form – Oil Circuit Breaker, VCB full form – Vacuum Circuit Breaker and ACB full form – Air Circuit Breaker.

Learn Basic Electrical


Important Electrical Full Forms


UPS full form – Uninterrupted Power Supply, SP full form – Single Pole, DP full form – Double Pole and TP full form – Triple Pole.
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S.N.  ELECTRICAL ABBREVIATIONS          ELECTRICAL  FULL FORMS
          1.          AC – ALTERNATING CURRENT
          2.          DC – DIRECT CURRENT
          3.            V – VOLTS
          4.            A – AMPERE
          5.           M – MOTOR
          6.            E – EARTH
          7.          A/C – AIR CONDITIONER
          8.            TP – TRIPLE POLE
          9.            DP – DOUBLE POLE
          10.          LA – LIGHT ARRESTER
          11.          KA – KILO AMPERE
          12.          LV – LOW VOLT
          13.          HV – HIGH VOLT
          14.          kV – KILOVOLT
          15.         MV – MEGA VOLT
          16.          HP – HORSEPOWER
          17.          HT – HIGH TENSION
          18.          LT – LOW TENSION
          19.       kVA – KILOVOLT AMPERE
          20.        ISO – ISOLATOR
          21.      NVC – NO VOLT COIL
          22.      OLR – OVERLOAD RELAY
          23.      OLP – OVERLOAD PROTECTION
          24.         SS – SALTER SWITCH
          25.         TS – THERMO SWITCH
          26.        TR – TRANSFORMER
          27.        PT – PRESSURE TRANSMITTER
          28.     DPT – DIFFERENTIAL PRESSURE TRANSMITTER
          29.        FT – FLOW TRANSMITTER
          30.        LT – LEVEL TRANSMITTER
          31.     PCC – POWER CONTROL CENTRE
          32.   MCC – MOTOR CONTROL CENTRE
          33.  RCCB – RESIDUAL CURRENT CIRCUIT BREAKER
          34. MPCB – MOTOR PROTECTION CIRCUIT BREAKER
          35.   MCB – MINIATURE CIRCUIT BREAKER
          36. MCCB – MOULDED CASE CIRCUIT BREAKER
          37.    ACB – AIR CIRCUIT BREAKER
          38.     VCB – VACUUM CIRCUIT BREAKER 
          39.     OCB – OIL CIRCUIT BREAKER
          40.      PLC – PROGRAMMABLE LOGIC CONTROLLER
          41.     DCS – DISTRIBUTED CONTROL SYSTEM
          42.     HMI – HUMAN MACHINE INTERFACE
          43.      RIO – REMOTE INPUT OUTPUT
          44.     RTU – REMOTE TERMINAL UNIT
          45.     DOL – DIRECT ONLINE
          46.   EOCR – ELECTRONIC OVERCURRENT RELAY
          47.    ELCB – EARTH LEAKAGE CIRCUIT BREAKER
          48.     HRC – HIGH RUPTURE CAPACITY FUSE
          49.     UPS – UNINTERRUPTED POWER SUPPLY
          50.        JB – JUNCTION BOX
          51.       TB – TERMINAL BLOCK
          52.     LCS – LOCAL CONTROL STATION
          53.       CT – CURRENT TRANSFORMER  
          54.       PT – POTENTIAL TRANSFORMER
          55.   XLPE – CROSS LINKED POLYETHYLENE
          56.   SWA – SINGLE WIRE ARMOURED 
          57.    PVC – POLYVINYL CHLORIDE
          58.   PTFE – POLY TETRA FLUORO ETHYLENE
          59.   FRLS – FIRE RESISTANCE LOW SMOKE
          60.    EPR – ETHYLENE PROPYLENE RUBBER
          61.HPMV – HIGH PRESSURE MERCURY VAPOUR LAMP
          62.  HPSV – HIGH PRESSURE SODIUM VAPOUR LAMP
          63.  SCIM – SQUIRREL CAGE INDUCTION MOTOR
          64.  SRIM – SLIP RING INDUCTION MOTOR
          65.  OLTC – ON LOAD TAP CHANGER
          66.     NO – NORMALLY OPENED
          67.     NC – NORMALLY CLOSED
          68.   RTD – RESISTANCE TEMPERATURE DETECTOR
          69.     BS – BRITISH STANDARDS
          70. RPM – REVOLUTION PER MINUTE
          71.  LDB – LIGHTING DISTRIBUTION BOARD
          72. PDB – POWER DISTRIBUTION BOARD 
          73.SLDB – SECONDARY LIGHTING DISTRIBUTION BOARD
          74.EMLDB- EMERGENCY LIGHTING DISTRIBUTION BOARD
          75.MLDB – MAIN LIGHTING DISTRIBUTION BOARD
          76. ACDB – ALTERNATING CURRENT DISTRIBUTION BOARD
          77.MPDB – MAIN POWER DISTRIBUTION BOARD
          78.  ACVS – AIR CONDITIONING AND VENTILATION SYSTEM
          79.  ACSR – ALUMINIUM CABLE STEEL REINFORCED
          80.  HART – HIGHWAY ADDRESSABLE REMOTE TRANSDUCER
          81.     PID – PROPORTIONAL INTEGRAL AND DERIVATIVE
          82.SCADA- SUPERVISORY CONTROL AND DATA ACQUISITION
          83.  VVVF – VARIABLE VOLTAGE VARIABLE FREQUENCY
          84. RCBO  – RESIDUAL CURRENT CIRCUIT BREAKER WITH OVERCURRENT PROTECTION
          85. ACSR – ALUMINIUM CONDUCTOR STEEL REINFORCED                          
          86.    AH – AMPERE-HOUR CAPACITY OF BATTERIES
          87.  AVR – AUTOMATIC VOLTAGE REGULATOR
          88.AWA –  ALUMINIUM WIRE ARMOUR
          89.      B – ELECTRICAL SUSCEPTANCE
          90. BAR – PRESSURE IN ATMOSPHERE
          91.   BIL – BREAKDOWN INSULATION LEVEL
          92.   BS – BRITISH STANDARD INSTITUTIONS                      
          93.BTU – BRITISH THERMAL UNIT
          94.     C – ELECTRICAL CAPACITANCE
          95.CACA- TOTALLY ENCLOSED AIR CIRCUIT, AIR COOLED
          96.CACW- TOTALLY ENCLOSED AIR CIRCUIT, WATER COOLED
          97. CAD – COMPUTER AIDED DESIGN
          98.    CB – CIRCUIT BREAKER
          99.CBCU- CIRCUIT BREAKER CONTROL UNIT
        100. CCR – CENTRAL CONTROL ROOM


CB full form – Circuit Breakers, MCB full form – Miniature Circuit Breaker, MCCB full form – Moulded Case Circuit Breaker, RCCB full form – Residual Current Circuit Breaker, RCBO full form – Residual Current Circuit Breaker with Overload Protection, ELCB full form – Earth Leakage Circuit Breaker, OCB full form – Oil Circuit Breaker, VCB full form – Vacuum Circuit Breaker, ACB full form – Air Circuit Breaker, UPS full form – Uninterrupted Power Supply, SP full form – Single Pole, DP full form – Double Pole and TP full form – Triple Pole.

       S.N – ELECTRICAL ABBREVIATIONS – ELECTRICAL  FULL FORMS
        101.  CEGB – CENTRAL ELECTRICITY GENERATING BOARD (UK)
        102.CENELEC- EUROPEAN COMMITTEE FOR ELECTROTECHNICAL STANDARDISATION
        103.COR CU- CORRUGATED COPPER
        104.   CSA – CROSS SECTIONAL AREA
        106.    CSI – CURRENT SOURCE INVERTER
        107.   CSP – CHLOROSULPHONATED POLYETHYLENE
        108.     CT – CURRENT TRANSFORMER
        109.     CU – UN-TINNED COPPER
        110. CUWB- COPPER WIRE BRAID
        111.db (A) – MEASUREMENT UNIT OF SOUNDS DECIBELS
        112.   DCS – DISTRIBUTED CONTROL SYSTEM
        113.     DE – DRIVE END OF A SHAFT
        114.deg C – THERMAL TEMPERATURE IN DEGREES CELSIUS
        115.deg F – THERMAL TEMPERATURE IN DEGREES FAHRENHEIT
        116.deg K – THERMAL TEMPERATURE IN DEGREES KELVIN
        117.  DMS – DATA MANAGEMENT SYSTEM
        118.  DMT – DEFINITE MINIMUM TIME
        119.   DOL – DIRECT ONLINE STARTER (INDUCTION MOTOR)
        120.  DWR – DIVIDED WINDING ROTOR SYNCHRONOUS GENERATOR
        121. ECHA – EQUIPMENT CERTIFIED FOR HAZARDOUS AREAS
        122.    EEC – EUROPEAN ECONOMIC COMMUNITY
        123.EEMVA- THE ENGINEERING EQUIPMENT AND THE MATERIALS USER ASSOCIATION
        124.   EHV – EXTRA HIGH VOLTAGE
        125.EIEMA- THE ELECTRICAL INSTALLATION EQUIPMENT MANUFACTURER’S ASSOCIATION
        126.    ELV – EXTRA LOW VOLTAGE (LESS THAN 50V)
        127.   EMA – ETHYLENE METHYL ACRYLATE
        128.   EMC – ELECTROMAGNETIC COMPATIBILITY
        129.    EMI – ELECTROMAGNETIC INTERFERENCE
        130.   EMF – ELECTROMOTIVE FORCE
        131.EPDM – ETHYLENE PROPYLENE DIENE MONOMER
        132.    EPR – ETHYLENE PROPYLENE RUBBER
        133.    ERA – ELECTRICAL RESEARCH ASSOCIATION
        134.   ERM – ELECTRONIC RESTART MODULE
        135.   ESD – EMERGENCY SHUTDOWN
        136.   ESP – ELECTRIC SUBMERSIBLE PUMP
        137. EX () – CERTIFICATION SYMBOL FOR HAZARDOUS AREA EQUIPMENT
        138. EWS – ENGINEERING WORK STATION
        139.PTL – PIN TYPE CABLE LUG
        140.  FBA – FACTORY BUILT ASSEMBLIES
        141.  FCU – FEEDER CONTROL UNIT
        142. F&G – FIRE AND GAS
        143.FEED – FRONT END ENGINEERING AND DESIGN OF A PROJECT
        144.FREQ- FREQUENCY (HZ)
        145.  FAT – FACTORY ACCEPTANCE TESTING
        146.   CG – CABLE GLANDS
        147. FLEX – FLEXIBLE USED FOR CABLES
        148.       G – ELECTRICAL CONDUCTANCE, OR GROUNDING
        149.   GCB – GAS CIRCUIT BREAKER
        150.   GCP – GENERATOR CONTROL PANEL
        151.    GIS – GAS INSULATED SWITCHGEAR (OR) SUBSTATION
        152.  GOR – GAS TO OIL RATIO OIL WELL FLUIDS
        153.  GRP – GLASS REINFORCED PLASTIC
        154.GSWA- GALVANISED STEEL WIRE ARMOUR
        155.GSWB- GALVANISED STEEL WIRE BRAID
        156.  GTG – GAS TURBINE GENERATOR
        157.  GTO – GATE TURN OFF THYRISTOR
        158.  HCL – HYDROGEN CHLORIDE, GAS OR ACID
        159.    CT – CABLE TRAY
        160.HOFR- HEAT AND OIL RESISTING, FLAME RETARDANT
        161.HVAC- HEATING VENTILATION AND AIR CONDITIONING
        162.    HZ – FREQUENCY IN CYCLES PER SECOND, OR HERTZ
        163.        TPS – THERMAL POWER STATION
        164.   IAC – ALTERNATING CURRENT
        165. IALA – INTERNATIONAL ASSOCIATION OF LIGHTHOUSE AUTHORITIES
        166.     ICI – IMPERIAL CHEMICAL INDUSTRIES
        167.   IDC – DIRECT CURRENT
        168.IDMT- INVERSE DEFINITE MINIMUM TIME
        169.    IEC – INTERNATIONAL ELECTROTECHNICAL COMMISSION
        170.    IEE – THE INSTITUTION OF ELECTRICAL ENGINEERS OF UK
        171.  IEEE – THE INSTITUTE OF ELECTRONIC AND ELECTRICAL ENGINEERS OF USA
        172.    I/O – INPUT OR OUTPUT SIGNALS OR QUANTITY
        173.  IMO – INTERNATIONAL MARITIME ORGANISATION
        174. IMCS – INTEGRATED MOTOR CONTROL SYSTEM
        175.   IMS – INFORMATION MANAGEMENT SYSTEM
        176.  INST – INSTANTANEOUS QUANTITY
        177.    INT – INTERMITTENT QUANTITY
        178.       IP – INSTITUTE OF PETROLEUM
        179.       IR – INSULATION RESISTANCE
        180.       IS – INTRINSICALLY SAFE SIGNAL, CIRCUIT OR EQUIPMENT
        181. IS/IN – RATIO OF STARTING CURRENT TO RUNNING CURRENT
        182.    ISO – INTERNATIONAL STANDARDS  ORGANISATION
        183.         J – ENERGY JOULES OR NEWTON – METRES
        184.         J – CURRENT DENSITY, AMPS/MM2
        185.      kA – KILO AMPERE
        186.KEMA – SHORT CIRCUIT TESTING AUTHORITY IN THE NETHERLAND
        187.       kg – KILOGRAM
        188.      km – LENGTH IN KILOMETER
        189.   kph – KILOMETRES PER HOUR
        190.     I/O – INPUT OR OUTPUT SIGNALS OR QUANTITY
        191.      kV – KILOVOLTS
        192.    kVA – KILOVOLT AMPERES
        193.  kVAr – REACTIVE KILOVOLT AMPERES
        194.     kW – KILOWATTS
        195.         L – ELECTRICAL INDUCTANCE IN HENRIES
        196.         L – LINE OR LOCAL CONTROL OPERATION
        197.    LAN – LOCAL AREA NETWORK
        198.    LBS – WEIGHT OF A SUBSTANCE IN POUNDS
        199.     LDS – LOW DENSITY FOAM
        200.     LED – LIGHT EMITTING DIODE

Circuit Breakers full form

Circuit Breakers, MCB full form – Miniature Circuit Breaker, MCCB full form – Moulded Case Circuit Breaker, RCCB full form – Residual Current Circuit Breaker, RCBO full form – Residual Current Circuit Breaker with Overload Protection, ELCB full form – Earth Leakage Circuit Breaker, OCB full form – Oil Circuit Breaker, VCB full form – Vacuum Circuit Breaker, ACB full form – Air Circuit Breaker, UPS full form – Uninterrupted Power Supply, SP full form – Single Pole, DP full form – Double Pole and TP full form – Triple Pole.

   S.N.  – ELECTRICAL ABBREVIATIONS –  ELECTRICAL  FULL FORMS
        201.        LEL – LOWER EXPLOSIVE LIMIT
        202.          LF – LOW FREQUENCY
        203.       LHS – LEFT HAND SIDE
        204.      LMS – LOAD MANAGEMENT SYSTEM
        205.      LNG – LIQUEFIED NATURAL GAS
        206.      LOC – LOCAL OPERATION
        207.      LPG – LIQUEFIED PETROLEUM GAS
        208.       LSS – LOAD SHEDDING SYSTEM
        209.       LSF – LOW SMOKE AND FUMES, APPLIED TO CABLES AND WIRES
        210.     LSLH – LOW SMOKE LOW HALOGEN
        211.        LEL – LOWER EXPLOSIVE LIMIT
        212.       LSR – LOAD SHARING SYSTEM
        213.        LV  – LOW VOLTAGE
        214.L1, L2, L3, N- NOTATION FOR LINE AND NEUTRAL VOLTAGES AND  CURRENTS
        215.      LUX – LEVEL OF ILLUMINATION
        216.       LEL – LOWER EXPLOSIVE LIMIT
        217.         m – LENGTH OR DIMENSION IN METRES, OR MONTH
        218.      mA – CURRENT IN MILLIAMPERES
        219.        M – MANUAL OPERATION
        220 mBAR – MILLIBAR
        221.     MB – HIGH PRESSURE MERCURY, WITHOUT PHOSPHOR COATING
        222.   MBF – HIGH PRESSURE MERCURY, WITH PHOSPHOR COATING
        223. MBFR – HIGH PRESSURE MERCURY, WITH PHOSPHOR COATING INTERNAL REFLECTOR
        224.    MBI – HIGH PRESSURE DISCHARGE WITH METALLIC HALIDES
        225.  MBIF – HIGH PRESSURE DISCHARGE WITH METALLIC HALIDES, WITH PHOSPHOR COATING
        226.   MBR – DOUBLE ENDED LINEAR ARC TUBE
        227. MBTF – COMBINATION OF MBF LAMP AND A FILAMENT LAMP
        228.  MCC  – MOTOR CONTROL CENTRE
        229.   MCF – SWITCH-START LAMP, ALSO USED FOR TUBULAR FLUORESCENT LAMPS IN GENERAL
        230. MCFE – STARTLESS LAMP, COATED WITH SILICONE
        231. MCFA – STARTLESS LAMP, WITH EARTH STRIP, MAINLY USED IN COLD ENVIRONMENTS
        232.  MBIF – HIGH PRESSURE DISCHARGE WITH METALLIC HALIDES, WITH PHOSPHOR COATING
        233.   MCR – MAXIMUM CONTINUOUS RATING
        234.  MCU – MOTOR CONTROL UNIT
        235.  MHO – UNIT OF ELECTRICAL ADMITTANCE
        236.    MIC – MAXIMUM IGNITION CURRENT
        237.  MICC – MINERAL INSULATED CALENDER CABLE
        238.MIMIC- MIMIC DISPLAY PANEL
        239.  MMF – MAGNETOMOTIVE FORCE
        240.MMSCF- MILLION STANDARD CUBIC FEET OF A CUBIC
        241.      MT – MICA GLASS TAPE
        242. MTTR – MEAN TIME TO REPAIR
        243.     MV – MEDIUM VOLTAGE
        244.     mV – VOLTAGE IN MILLIVOLTS
        245.  MVA – MEGAVOLT AMPERES
        246.MVAr – REACTIVE MEGA VOLT AMPERES
        247.   MW – MEGAWATTS
        248. NACE – NATIONAL ASSOCIATION OF CORROSION ENGINEERS (USA)
        249.   NBR – NITRILE BUTADIENE RUBBER
        250.NC-N/C- NORMALLY CLOSED SWITCHING DEVICE
        251.   NDE – NON DRIVE END OF A SHAFT
        252. MCFE – STARTLESS LAMP, COATED WITH SILICONE
        253.NEMA – THE NATIONAL ELECTRICAL MANUFACTURERS ASSOCIATION (USA)
        254.    NEC – NATIONAL ELECTRIC CODE (USA)
        255.    NER – NEUTRAL EARTH RESISTOR
        256. NFPA – NATIONAL FIRE PROTECTION ASSOCIATION
        257.       Ni – NICKEL METAL
        258.NO-N/O- NORMALLY OPEN SWITCHING DEVICE
        259.    NPT – NATIONAL PIPE THREADS (USA)
        260.      NS – USED TO DESCRIBE A TYPE OF VARIABLE SPEED AC MOTOR
        261.    NTS – NOT TO SCALE
        262.OC-O/C- OVERCURRENT OR OPEN CIRCUIT
        263.OF-O/F- OVERFREQUENCY
        264.  OFAF – FORCED CIRCULATION OF INTERNAL LIQUID, FORCED HEAT EXCHANGE TO AIR
        265. OFAN – FORCED CIRCULATION OF INTERNAL LIQUID, NATURAL HEAT TO AIR
        266.    OHL – OVERHEAD LINE
        267.OHMS – UNIT OF ELECTRICAL RESISTANCE OR IMPEDANCE
        268.    OIM – OFFSHORE INSTALLATION MANAGER
        269.OL-O/L- OVERLOAD
        270. ONAF – NATURALAY CIRCULATED INTERNAL LIQUID, FORCED HEAT EXCHANGING TO AIR
        271.ONAN – NATURALAY CIRCULATED INTERNAL LIQUID, NATURAL HEAT EXCHANGING TO AIR
        272. OSHA – OCCUPATIONAL HEALTH AND SAFETY ADMINISTRATION (USA)
        273. OV-O/V- OVERVOLTAGE
        274. P – W – POWER OR WATTS
        275.     PCC – POINT OF COMMON CONNECTION
        276.     PVC – POLYVINYL CHLORIDE
        277.   PVDF – POLYVINYLIDENE FLUORIDE
        278.PTP-PET- POLYETHYLENE TEREPHTHALATE
        279.  PWM – PULSE WIDTH MODULATION
        280.       QA – QUALITY ASSURANCE
        281.       QC  – QUALITY CONTROL
        282.           R – ELECTRICAL RESISTANCE
        283.     RAM – RANDOM ACCESS MEMORY
        284.      RCU – REMOTE CONTROL UNIT
        285.      RHS – RIGHT HAND SIDE
        286.     RMS –  ROOT MEAN SQUARE
        287.    ROM – READ ONLY MEMORY
        288.      RTU – REMOTE TRANSMITTER UNIT
        289.       SF6 – SULPHUR HEXAFLUORIDE
        290.      STG – STEAM TURBINE GENERATOR
        291.    SWA – STEEL WIRE ARMOUR
        292. SWBD – SWITCH BOARD
        293. SWGR – SWITCHGEAR
        294. TDRM – TIME DELAYED RESTART RELAY
        295.       TG – TURBO GENERATOR, GAS OR STEAM
        296.     TCP – GAS TURBINE CONTROL PANEL
        297.   TPRL – TOTAL PLANT RUNNING LOAD
        298.     UPS – UNINTERRUPTIBLE POWER SUPPLY UNIT
        299.       UV – UNDERVOLTAGE

300 Electrical Abbreviations and Full Forms

UPS full form – Uninterrupted Power Supply, SP full form – Single Pole, DP full form – Double Pole, TP full form – Triple Pole, MCB full form – Miniature Circuit Breaker, MCCB full form – Moulded Case Circuit Breaker, RCCB full form – Residual Current Circuit Breaker, RCBO full form – Residual Current Circuit Breaker with Overload Protection, ELCB full form – Earth Leakage Circuit Breaker, OCB full form – Oil Circuit Breaker, VCB full form – Vacuum Circuit Breaker, ACB full form – Air Circuit Breaker.


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MCB full form – Miniature Circuit Beaker

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MCCB full form – Moulded Case Circuit Breaker

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ELCB full form – Earth Leakage Circuit Breaker

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OCB full form – Oil Circuit Breaker

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RCCB full form – Residual Current Circuit Breaker

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RCBO full form – Residual Current Circuit Breaker Overload

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ACB full form – Air Circuit Breaker

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VCB full form – Vacuum Circuit Breaker

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DP – Double Pole 

Final Word

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