MCCBs

MCCBs (Moulded Case Circuit Breakers) are an electrically operated switch designed to protect an electrical circuit from damage caused by overcurrent, typically resulting from an overload or short circuit.
How do they work?
The basic function of an MCCB is to interrupt current flow after a fault, once the fault is corrected the circuit breaker can be reset (either manually or automatically) to resume normal operation.
MCB or MCCB
Although MCBs and MCCBs both are circuit breakers, there are key differences between the two that make them suitable for specific jobs. The main difference between the two is the capacity, MCBs are rated under 100 amps with an interrupting rating of under 18,000 amps. Consequently, the trip characteristics may not be adjusted since they cater to low circuits. On the other hand, an MCCB comes with an adjustable trip characteristic for the higher loads. An MCCB would typically provide amps as high as 2500 or as low as 10, depending on the application. The interrupting rating of MCCBs range from around 10,000 amps to 200,000 amps.

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Description Price Range Series Number of Poles Current Rating Breaking Capacity at Maximum Voltage Rating Rated AC Voltage Rated DC Voltage Mounting Style Length Width Depth Break Time Circuit Breaker Type Mounting Hole Diameter
RS Stock No. 628-7994
Mfr. Part No.265721 & NZMN1-M80
BrandEaton
MYR1,666.75
1 Box of 1
Box(es)
XEnergy NZM1 3 80A 50 kA 690V 500V - 90mm 145mm 84.5mm - - -
RS Stock No. 849-4466
Mfr. Part No.LV431681
MYR5,750.79
Each
units
NSX Range LV4 4 250A 100 kA 690V - - 161mm 140mm 86mm - - -
RS Stock No. 125-1403
Mfr. Part No.SEA9NCB2504SM
MYR3,646.84
Each
units
Acti 9 SEA9 4 250A - - - - - - - - MCCB -
RS Stock No. 849-4100
Mfr. Part No.LV429694
MYR2,636.95
Each
units
NSX Range LV4 4 100A 100 kA 690V - - 161mm 140mm 86mm - - -
RS Stock No. 849-4393
Mfr. Part No.LV431620
MYR4,004.51
Each
units
- - - - - - - - - - - - - -
RS Stock No. 849-4242
Mfr. Part No.LV430631
MYR2,286.29
Each
units
NSX Range LV4 3 160A 85 kA 690V - - 161mm 105mm 86mm - - -
RS Stock No. 849-4532
Mfr. Part No.LV431830
MYR4,628.68
Each
units
NSX Range LV4 3 250A 90 kA 690V - - 161mm 105mm 86mm - - -
RS Stock No. 537-5589
Mfr. Part No.259124 & NZMN2-VE250
BrandEaton
MYR3,850.77
Each
units
XEnergy NZM2 3 250A 50 kA 690V 750V - 105mm 184mm 149mm - - -
RS Stock No. 874-4284
Mfr. Part No.3VA1140-3ED36-0AA0
BrandSiemens
MYR1,680.57
Each
units
Sentron 3VA 3 40A 25 kA 690V 500V - 76.2mm 130mm 88mm Instantaneous MCCB 4.2mm
RS Stock No. 776-3348
Mfr. Part No.A9F90325
MYR2,177.59
Each
units
Acti 9 iC60L 3 25A 30 kA 440V - DIN Rail Mount 54mm 78.5mm 85mm - - -
RS Stock No. 849-4157
Mfr. Part No.LV429842
MYR1,921.60
Each
units
NSX Range LV4 3 100A 90 kA 690V - - 161mm 105mm 86mm - - -
RS Stock No. 849-4349
Mfr. Part No.LV430790
MYR4,278.03
Each
units
NSX Range LV4 3 160A 100 kA 690V - - 161mm 105mm 86mm - - -
RS Stock No. 849-4239
Mfr. Part No.LV430620
MYR1,590.37
Each
units
NSX Range LV4 3 160A 85 kA 690V - - 161mm 105mm 86mm - - -
RS Stock No. 454-8130
Mfr. Part No.259085 & NZMN1-A100
BrandEaton
MYR2,273.25
Each
units
XEnergy NZM1 3 100A 50 kA 690V 750V - 90mm 145mm 84.5mm - - -
RS Stock No. 628-8060
Mfr. Part No.259141 & PN1-100
BrandEaton
MYR998.69
1 Box of 1
Box(es)
- PN1 3 100A 80 kA 690V - - 90mm 145mm 84.5mm - - -
RS Stock No. 628-8048
Mfr. Part No.259140 & PN1-63
BrandEaton
MYR998.81
1 Box of 1
Box(es)
- PN1 3 63A 80 kA 690V - - 90mm 145mm 84.5mm - - -
RS Stock No. 831-9163
Mfr. Part No.1SDA067414R1
BrandABB
MYR1,380.89
Each
units
Protecta XT1N 3 63A 36 kA 690V 500V DIN Rail Mount 76.2mm 130mm 70mm - - -
RS Stock No. 849-4267
Mfr. Part No.LV430641
MYR3,408.39
Each
units
NSX Range LV4 4 160A 85 kA 690V - - 161mm 140mm 86mm - - -
RS Stock No. 849-4087
Mfr. Part No.LV429686
MYR2,475.64
Each
units
NSX Range LV4 4 100A 100 kA 690V - - 161mm 140mm 86mm - - -
RS Stock No. 849-4024
Mfr. Part No.LV429654
MYR2,223.17
Each
units
NSX Range LV4 4 100A 85 kA 690V - - 161mm 140mm 86mm - - -