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. 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. 849-4157
Mfr. Part No.LV429842
MYR1,921.60
Each
units
NSX Range LV4 3 100A 90 kA 690V - - 161mm 105mm 86mm - - -
RS Stock No. 537-5595
Mfr. Part No.259125 & NZMH2-VE100
BrandEaton
MYR2,993.64
Each
units
XEnergy NZM2 3 100A 150 kA 690V 750V - 105mm 184mm 149mm - - -
RS Stock No. 849-4456
Mfr. Part No.LV431671
MYR4,341.14
Each
units
NSX Range LV4 3 250A 85 kA 690V - - 161mm 105mm 86mm - - -
RS Stock No. 537-5573
Mfr. Part No.259123 & NZMN2-VE160
BrandEaton
MYR3,061.52
Each
units
XEnergy NZM2 3 160A 50 kA 690V 750V - 105mm 184mm 149mm - - -
RS Stock No. 849-4141
Mfr. Part No.LV429807
MYR4,200.88
Each
units
NSX Range LV4 4 100A 90 kA 690V - - 161mm 140mm 86mm - - -
RS Stock No. 849-3930
Mfr. Part No.LV429622
MYR1,563.93
Each
units
NSX Range LV4 3 100A 85 kA 690V - - 161mm 105mm 86mm - - -
RS Stock No. 849-4122
Mfr. Part No.LV429780
MYR4,186.85
Each
units
NSX Range LV4 4 100A 85 kA 690V - - 161mm 140mm 86mm - - -
RS Stock No. 849-3952
Mfr. Part No.LV429630
MYR1,746.28
Each
units
NSX Range LV4 3 100A 85 kA 690V - - 161mm 105mm 86mm - - -
RS Stock No. 849-4150
Mfr. Part No.LV429840
MYR1,963.68
Each
units
NSX Range LV4 3 100A 90 kA 690V - - 161mm 105mm 86mm - - -
RS Stock No. 849-3983
Mfr. Part No.LV429637
MYR1,704.20
Each
units
NSX Range LV4 3 100A 85 kA 690V - - 161mm 105mm 86mm - - -
RS Stock No. 731-9540
Mfr. Part No.4 067 72
BrandLegrand
MYR223.01
Each
units
- - - - - - - - - - - - - -
RS Stock No. 849-3977
Mfr. Part No.LV429634
MYR1,704.20
Each
units
NSX Range LV4 3 100A 85 kA 690V - - 161mm 105mm 86mm - - -
RS Stock No. 874-4262
Mfr. Part No.3VA1132-3EF36-0AA0
BrandSiemens
MYR1,926.05
Each
units
Sentron 3VA 3 32A 25 kA 690V 500V - 76.2mm 130mm 88mm Instantaneous MCCB 4.2mm
RS Stock No. 849-4602
Mfr. Part No.LV432893
MYR10,281.29
Each
units
NSX Range LV4 3 630A 85 kA 690V - - 255mm 140mm 110mm - - -
RS Stock No. 517-4780
Mfr. Part No.MGP0301L2
MYR946.78
Each
units
- - - - - - - - - - - - - -
RS Stock No. 874-4222
Mfr. Part No.3VA1120-3ED36-0AA0
BrandSiemens
MYR1,680.57
Each
units
Sentron 3VA 3 20A 25 kA 690V 500V - 76.2mm 130mm 88mm Instantaneous MCCB 4.2mm
RS Stock No. 849-4201
Mfr. Part No.LV429857
MYR2,230.18
Each
units
NSX Range LV4 4 100A 90 kA 690V - - 161mm 140mm 86mm - - -
RS Stock No. 849-4346
Mfr. Part No.LV430786
MYR4,775.93
Each
units
NSX Range LV4 4 160A 90 kA 690V - - 161mm 140mm 86mm - - -
RS Stock No. 849-4147
Mfr. Part No.LV429805
MYR4,362.18
Each
units
NSX Range LV4 4 100A 90 kA 690V - - 161mm 140mm 86mm - - -