Differences between MCCB and ACB
About Molded Case Circuit Breaker (MCCB) and Air Circuit Breaker (ACB)
Air Circuit Breaker (ACB) and Molded Case Circuit Brekaer (MCCB) are both used for the safe making and breaking of electrical systems. In principle, both serve the same purpose.
ACBs are usually seen on the upstream side of the circuit & MCCBs on load-side control (usually, load-side switching operations are more frequent than upstream). Depending upon the operating voltages and level of protection(Fault Level) needed for the system,these three protection device are selected. As the technology has improved over the period of time, the rating & breaking capacities of MCCBs are increasing - hence there is the possibility of overlap in the application of ACB & MCCB.
Basic Definition of Molded Case Circuit Breaker (MCCB) and Air Circuit Breaker (ACB)
- Molded Case Circuit Breaker (MCCB) is an electrical protection device used in various electrical systems to provide safe and reliable power distribution. It's designed to protect electrical circuits from damage caused by overcurrents, which can be due to overload or short circuits
- Air Circuit Breaker (ACB) is electronic equipment that is used for the protection of electric circuits from short circuits or overcurrent. The ACB operates at atmospheric pressure in air. ACB is used in the switching mechanism and protection of the electrical system
What are the Differences Between Molded Case Circuit Breaker (MCCB) and Air Circuit Breaker (ACB)?
MCCB |
ACB |
| MCCB is used at the load side of the circuit in order to break the circuit from the load side in case of any fault which can cause damage to the circuit. | ACBs are usually used on the upstream end of the circuit. |
| MCCBs are frequently broken in a circuit due to any fault situation. | ACBs are not frequently used. |
| The MCCB has an improved rating as compared to the ACB. | The rating of the air circuit breaker is lower as compared to MCCB. |
| MCCBs are considered more accurate than ACBs due to the use of different technologies in MCCBs. The improvements in the technologies have made the circuit breakers more accurate and précised. | The selection of the ACBs for a circuit is done on the basis of different parameters which are operating voltage and the fault voltage. ACB parameters are lower in terms of performance than the MCCBs. |
| The MCCB is better than the ACB in different parameters like breaking capability. | The breaking capability of an air circuit breaker is lower as compared to the MCCB. |
| The MCCB already utilizes the best qualities available for its operation. | The technologies used in the air circuit breaker need to be improved further to improve its performance. |
| The rated current for the MCCB is about 3200 A. | The current rating for a general ACB is 6300 A. |
| The improved rating of the MCCB is due to the use of good material in the MCCB circuit. | From the last decades with the improvement of the different technologies, the performance of both MCCB and ACB can be overlapped. |
| The circuit of MCCB is used at the load end due to its compatibility of frequently operating with accuracy. | The ACB is not compatible to be used at the load end due to its less frequent operation. |
| The frequent use of the MCCB on the load end is selected after calculating its different parameters. | If the operating factor of the ACB is increased it will be also used at the load end. |
| If the load end is larger than the rating of the MCCB then it cannot be used at the load end. | Similarly, for specific loads, the ACB can be used on the load end. |
| The utilization category for the molded case circuit breaker is ‘A’. | The utilization category for the molded case circuit breaker is ‘B’. |
| MCCBs are less expensive as compared to ACBs. | ACBs are expensive as compared to MCCBs. |
| It is the general rating of the current for MCCB, different MCCBs available in the market can have ratings greater than this rating or lower than this rating. | The rating of the ACB is higher than the MCCBs. Due to this high current rating, an ACB is used in the circuit with a larger circuit current. |
| The tripping thresholds can be adjusted easily in the MCCB. This parameter makes the MCCB favorable in different circuits over other circuit breakers. | The tripping thresholds can be adjusted in the ACBs. This tripping threshold can be easily adjusted in the MCCBs but for ACBs it is a bit complex. |
| There is a thermal-magnetic operation in the MCCBs. In the previous MCCBs, there was only one operation which was generally magnetic. | The ACB also operates in two different modes. One can be the magnetic mode and the other is the thermal-magnetic mode. |
| The units which are tripped can be either the magnetic units or the electronic units. The trip units can also be thermal magnetic units. | The trips unit of the ACB can be also the same as MCCBs. |
| MCCBs are common breakers as compared to the ACBs. | ACBs are not commonly used in different circuit breakers. |
Shop for Molded Case Circuit Breakers (MCCBs)
ElectGo offers a wide range of MCCB products from well-known brands such as ABB and Schneider Electric. As an authorized distributor in Singapore, we are your trusted source for high-quality MCCB products from these leading manufacturers.
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T5N 630 TMA 500-5000 3p F FABB
SKU: AB_1SDA054456R1
Model: T5N 630 TMA 500-5000 3p F F
SGD $1,510.38 -
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T6N 630 TMA 630-6300 3p F FABB
SKU: AB_1SDA060202R1
Model: T6N 630 TMA 630-6300 3p F F
SGD $1,239.09 -
T6H 1000 PR221DS-LS/I In=1000 3p F FABB
SKU: AB_1SDA076864R1
Model: T6H 1000 PR221DS-LS/I In=1000 3p
SGD $2,992.17 -
T6S 1000 PR221DS-LS/I In=1000 4p F FABB
SKU: AB_1SDA076877R1
Model: T6S 1000 PR221DS-LS/I In=1000 4p
SGD $2,663.11 - T6S 1000 PR221DS-LS/I In=1000 3p F F
ABB
SKU: AB_1SDA076855R1
Model: T6S 1000 PR221DS-LS/I In=1000 3p
SGD $2,040.48 - T6N 1000 PR221DS-LS/I In=1000 3p F F
ABB
SKU: AB_1SDA076856R1
Model: T6N 1000 PR221DS-LS/I In=1000 3p
SGD $1,905.80 -
MOD XT1-XT3 110...125V ac/dcABB
SKU: AB_1SDA066459R1
Model: MOD XT1-XT3 110...125V ac/dc
SGD $380.77 -
SOR-C XT1..XT4 F/P 24-30 Vac/dcABB
SKU: AB_1SDA066322R1
Model: SOR-C XT1..XT4 F/P 24-30 Vac/dc
SGD $71.58 -
XT6H 800 Ekip Dip LSI In=630 4p F FABB
SKU: AB_1SDA107597R1
Model: XT6H-800-Ekip-Dip-LSI-In=630-4p-F-F
SGD $3,156.52 - XT6H 800 Ekip Dip LS/I In=630 4p F F
ABB
SKU: AB_1SDA107596R1
Model: XT6H-800-Ekip-Dip-LS/I-In=630-4p-F-F
SGD $2,688.91 -
XT6H 800 TMA 630-6300 4p F F InN=100%InABB
SKU: AB_1SDA107595R1
Model: XT6H-800-TMA-630-6300-4p-F-F-InN=100%In
SGD $2,632.71 - XT6S 800 Ekip Dip LSI In=630 4p F F
ABB
SKU: AB_1SDA107584R1
Model: XT6S-800-Ekip-Dip-LSI-In=630-4p-F-F
SGD $2,832.55 - XT6S 800 Ekip Dip LS/I In=630 4p F F
ABB
SKU: AB_1SDA107583R1
Model: XT6S-800-Ekip-Dip-LS/I-In=630-4p-F-F
SGD $2,364.94 - XT6S 800 TMA 630-6300 4p F F InN=100%In
ABB
SKU: AB_1SDA107582R1
Model: XT6S-800-TMA-630-6300-4p-F-F-InN=100%In
SGD $2,308.74 - XT6S 800 TMA 630-6300 4p F F InN=50%In
ABB
SKU: AB_1SDA107581R1
Model: XT6S-800-TMA-630-6300-4p-F-F-InN=50%In
SGD $2,308.74 -
XT7L M 1600 Ekip Touch LSI In1600A 4p FFABB
SKU: AB_1SDA101781R1
Model: XT7L-M-1600-Ekip-Touch-LSI-In1600A-4p-FF
SGD $22,571.11 - XT7L M 1250 Ekip Touch LSI In1250A 4p FF
ABB
SKU: AB_1SDA101780R1
Model: XT7L-M-1250-Ekip-Touch-LSI-In1250A-4p-FF
SGD $14,140.69 - XT7L M 1000 Ekip Touch LSI In1000A 4p FF
ABB
SKU: AB_1SDA101779R1
Model: XT7L-M-1000-Ekip-Touch-LSI-In1000A-4p-FF
SGD $10,850.10 - XT7L M 800 Ekip Touch LSI In=800A 4p F F
ABB
SKU: AB_1SDA101778R1
Model: XT7L-M-800-Ekip-Touch-LSI-In=800A-4p-F-F
SGD $8,366.60
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Circuit Breaker Easypact EZC250N - TMD - 200 A - 3 Poles 3dSchneider
SKU: SE_EZC250N3200
Model: EZC250N3200
SGD $189.85 -
Circuit Breaker Easypact EZC100H - TMD - 100 A - 3 Poles 3dSchneider
SKU: SE_EZC100H3100
Model: EZC100H3100
SGD $71.71 -
Circuit Breaker ComPacT NSX100N, 50kA At 415VAC, TMD Trip Unit 100A, 3 Poles 3dSchneider
SKU: SE_C10N3TM100
Model: C10N3TM100
SGD $303.52 - Circuit Breaker ComPacT NSX100F, 36kA At 415VAC, TMD Trip Unit 40A, 3 Poles 3d
Schneider
SKU: SE_C10F3TM040
Model: C10F3TM040
SGD $258.20 -
Circuit Breaker ComPacT NSX160F, 36kA At 415VAC, TMD Trip Unit 100A, 3 Poles 3dSchneider
SKU: SE_C16F3TM160
Model: C16F3TM160
SGD $381.81 - Circuit Breaker ComPacT NSX160F, 36kA At 415VAC, TMD Trip Unit 80A, 3 Poles 3d
Schneider
SKU: SE_C16F3TM125
Model: C16F3TM125
SGD $379.52 - Circuit Breaker ComPacT NSX100F, 36kA At 415VAC, TMD Trip Unit 100A, 3 Poles 3d
Schneider
SKU: SE_C10F3TM100
Model: C10F3TM100
SGD $258.20 -
Circuit Breaker, ComPacT NSX100F, 36kA/415VAC, 3 Poles, TMD Trip Unit 63ASchneider
SKU: SE_C10F3TM063
Model: C10F3TM063
SGD $258.20 -
Circuit Breaker ComPacT NSX160N, 50kA At 415VAC, TMD Trip Unit 160A, 3 Poles 3dSchneider
SKU: SE_C16N3TM160
Model: C16N3TM160
SGD $432.16 - Circuit Breaker ComPacT NSX160H, 70kA At 415VAC, TMD Trip Unit 160A, 3 Poles 3d
Schneider
SKU: SE_C16H3TM160
Model: C16H3TM160
SGD $482.52 - Circuit Breaker ComPacT NSX100H, 70kA At 415VAC, TMD Trip Unit 100A, 3 Poles 3d
Schneider
SKU: SE_C10H3TM100
Model: C10H3TM100
SGD $346.10 -
Circuit Breaker ComPacT NSX100F, 36kA At 415VAC, TMD Trip Unit 100A, 4 Poles 3dSchneider
SKU: SE_C10F6TM100
Model: C10F6TM100
SGD $370.82 -
SR3B261BD Molded Case Circuit Breaker (MCCB)Schneider
SKU: SE_SR3B261BD
Model: SR3B261BD
SGD $353.26 - Circuit Breaker, ComPacT NSX100F, 36kA/415VAC, 3 Poles, TMD Trip Unit 80A
Schneider
SKU: SE_C10F3TM080
Model: C10F3TM080
SGD $258.20 -
EasyPact CVS630N Circuit Breaker, 50 KA@415 VAC, 3P 3d, ETS 2.3 Trip Unit 630 A.Schneider
SKU: SE_LV563510
Model: LV563510
SGD $872.69 -
Circuit Breaker Easypact EZC100H - TMD - 100 A - 2 Poles 2dSchneider
SKU: SE_EZC100H2100
Model: EZC100H2100
SGD $73.11 - Circuit Breaker Easypact EZC100H - TMD - 60 A - 2 Poles 2d
Schneider
SKU: SE_EZC100H2060
Model: EZC100H2060
SGD $73.11 -
Circuit Breaker Easypact EZC100H - TMD - 60 A - 3 Poles 3dSchneider
SKU: SE_EZC100H3060
Model: EZC100H3060
SGD $71.71 -
EasyPact CVS160F Circuit Breaker, 36 KA At 415 VAC, 3P 3d, MA 150 A Trip UnitSchneider
SKU: SE_LV516440
Model: LV516440
SGD $252.66 -
EasyPact CVS100B Circuit Breaker, 25 KA At 415 VAC, 3P 3d, TM-D 80 A Trip UnitSchneider
SKU: SE_LV510306
Model: LV510306
SGD $119.36
Shop for Air Circuit Breakers (ACBs)
ElectGo offers a wide range of ACB products from well-known brands such as ABB and Schneider Electric. As an authorized distributor in Singapore, we are your trusted source for high-quality ACB products from these leading manufacturers.
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Class 1 Power&Energy Metering E2.2ABB
SKU: AB_1SDA107675R1
Model: Class-1-Power&Energy-Metering-E2.2
SGD $280.49 - Class 1 Power&Energy Metering E6.2
ABB
SKU: AB_1SDA107677R1
Model: Class-1-Power&Energy-Metering-E6.2
SGD $280.49 - Class 1 Power&Energy Metering E4.2
ABB
SKU: AB_1SDA107676R1
Model: Class-1-Power&Energy-Metering-E4.2
SGD $280.49 -
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- Adaptive Protection for Emax 2
ABB
SKU: AB_1SDA105232R1
Model: Adaptive-Protection-for-Emax-2
SGD $262.93 - Voltage Protection for Emax 2
ABB
SKU: AB_1SDA105227R1
Model: Voltage-Protection-for-Emax-2
SGD $700.99 - Frequency Protection for Emax 2
ABB
SKU: AB_1SDA105229R1
Model: Frequency-Protection-for-Emax-2
SGD $630.99 -
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- Advanced Voltage Protection for Emax 2
ABB
SKU: AB_1SDA105228R1
Model: Advanced-Voltage-Protection-for-Emax-2
SGD $700.99 - Measuring Package for Emax 2
ABB
SKU: AB_1SDA107525R1
Model: Measuring-Package-for-Emax-2
SGD $420.62 -
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RELT-Ekip 2K-3 E1.2..E6.2-Tmax XTABB
SKU: AB_1SDA074169R1
Model: RELT-Ekip-2K-3-E1.2..E6.2-Tmax-XT
SGD $278.43 -
EKIP 2K-2 E1.2..E6.2-Tmax XTABB
SKU: AB_1SDA074168R1
Model: EKIP-2K-2-E1.2..E6.2-Tmax-XT
SGD $278.43 -
EKIP 2K-1 E1.2..E6.2-Tmax XTABB
SKU: AB_1SDA074167R1
Model: EKIP-2K-1-E1.2..E6.2-Tmax-XT
SGD $278.43 - EKIP COM ACTUATOR E1.2..E6.2-XT7-XT7M
ABB
SKU: AB_1SDA074166R1
Model: EKIP-COM-ACTUATOR-E1.2..E6.2-XT7-XT7M
SGD $264.02 - Support F/FP Type A,B,D E2.2…E6.2
ABB
SKU: AB_1SDA073895R1
Model: Support-F/FP-Type-A,B,D-E2.2…E6.2
SGD $326.52
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Embedded ethernet interface module (EIFE) - for MTZ2/MTZ3 drawoutSchneider
SKU: SE_LV850065SP
Model: LV850065SP
SGD $253.32 -
Mounting Bracket Kit for MTZ 2,3 Remote Racking DeviceSchneider
SKU: SE_LV839294SP
Model: LV839294SP
SGD $1,950.41 -
MasterPacT MTZ Remote Racking Device for MTZ 2,3Schneider
SKU: SE_LV839292SP
Model: LV839292SP
SGD $63,139.09 - MasterPacT MTZ Remote Racking Device for MTZ 1,2,3
Schneider
SKU: SE_LV839291SP
Model: LV839291SP
SGD $94,755.90 -
Sensor plug, MasterPact MTZ2 with MicroLogic X, 2000A rating, spare partSchneider
SKU: SE_LV833982SP
Model: LV833982SP
SGD $138.47 -
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Ronis 2 Lock+adaptation Kit - for NT - OFF Position Locking - Same KeysSchneider
SKU: SE_47522
Model: 47522
SGD $735.84 -
Profalux 2 Lock+adaptation Kit - for NT - OFF Position - Same KeysSchneider
SKU: SE_47520
Model: 47520
SGD $532.15 - Ronis Lock+adaptation Kit - for NT - OFF Position Locking - 1 Key
Schneider
SKU: SE_47521
Model: 47521
SGD $312.86 - Profalux Lock+adaptation Kit - for NT - OFF Position Locking - 1 Key
Schneider
SKU: SE_47519
Model: 47519
SGD $312.86 -
- MVS40H4MW2L Air Circuit Breakers (ACB)
Schneider
SKU: SE_MVS40H4MW2L
Model: MVS40H4MW2L
SGD $13,108.10 -
- MVS40H4MF2L Air Circuit Breakers (ACB)
Schneider
SKU: SE_MVS40H4MF2L
Model: MVS40H4MF2L
SGD $10,597.13 - MVS40H4MF0D Air Circuit Breakers (ACB)
Schneider
SKU: SE_MVS40H4MF0D
Model: MVS40H4MF0D
SGD $10,611.34 - MVS32H4MW0D Air Circuit Breakers (ACB)
Schneider
SKU: SE_MVS32H4MW0D
Model: MVS32H4MW0D
SGD $9,467.37 - MVS32H4MF2L Air Circuit Breakers (ACB)
Schneider
SKU: SE_MVS32H4MF2L
Model: MVS32H4MF2L
SGD $7,501.48 - MVS32H4MF0D Air Circuit Breakers (ACB)
Schneider
SKU: SE_MVS32H4MF0D
Model: MVS32H4MF0D
SGD $7,656.04 - MVS25H4MW2L Air Circuit Breakers (ACB)
Schneider
SKU: SE_MVS25H4MW2L
Model: MVS25H4MW2L
SGD $6,863.83 - MVS25H4MW0D Air Circuit Breakers (ACB)
Schneider
SKU: SE_MVS25H4MW0D
Model: MVS25H4MW0D
SGD $7,407.18
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