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. 454-8045
Mfr. Part No.259076 & NZMB1-A50
BrandEaton
MYR1,658.33
Each
units
XEnergy NZM1 3 50A 25 kA 440V - - 90mm 145mm 84.5mm - - -
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. 874-4341
Mfr. Part No.3VA1180-3EF36-0AA0
BrandSiemens
MYR2,102.29
Each
units
Sentron 3VA 3 80A 25 kA 690V 500V - 76.2mm 130mm 88mm Instantaneous MCCB 4.2mm
RS Stock No. 849-4595
Mfr. Part No.LV432696
MYR8,878.66
Each
units
NSX Range LV4 4 400A 85 kA 690V - - 255mm 185mm 110mm - - -
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. 849-3952
Mfr. Part No.LV429630
MYR1,746.28
Each
units
NSX Range LV4 3 100A 85 kA 690V - - 161mm 105mm 86mm - - -
RS Stock No. 849-4175
Mfr. Part No.LV429847
MYR1,921.60
Each
units
NSX Range LV4 3 100A 90 kA 690V - - 161mm 105mm 86mm - - -
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. 849-4188
Mfr. Part No.LV429851
MYR2,615.91
Each
units
NSX Range LV4 4 100A 90 kA 690V - - 161mm 140mm 86mm - - -
RS Stock No. 849-4129
Mfr. Part No.LV429790
MYR3,401.38
Each
units
NSX Range LV4 3 100A 100 kA 690V - - 161mm 105mm 86mm - - -
RS Stock No. 849-3992
Mfr. Part No.LV429643
MYR2,061.87
Each
units
NSX Range LV4 4 100A 85 kA 690V - - 161mm 140mm 86mm - - -
RS Stock No. 537-5573
Mfr. Part No.259123 & NZMN2-VE160
BrandEaton
MYR3,108.73
Each
units
XEnergy NZM2 3 160A 50 kA 690V 750V - 105mm 184mm 149mm - - -
RS Stock No. 517-4780
Mfr. Part No.MGP0301L2
MYR961.37
Each
units
- - - - - - - - - - - - - -
RS Stock No. 849-4450
Mfr. Part No.LV431672
MYR4,109.71
Each
units
NSX Range LV4 3 250A 85 kA 690V - - 161mm 105mm 86mm - - -
RS Stock No. 628-8054
Mfr. Part No.265725 & NZMN2-M200
BrandEaton
MYR3,782.76
1 Box of 1
Box(es)
XEnergy NZM2 3 200A 50 kA 690V 750V - 105mm 184mm 149mm - - -
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. 874-4200
Mfr. Part No.3VA1116-4ED36-0AA0
BrandSiemens
MYR2,635.25
Each
units
Sentron 3VA 3 160A 36 kA 690V 500V - 76.2mm 130mm 88mm Instantaneous MCCB 4.2mm
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. 731-9540
Mfr. Part No.4 067 72
BrandLegrand
MYR223.74
Each
units
- - - - - - - - - - - - - -
RS Stock No. 454-8051
Mfr. Part No.259077 & NZMB1-A63
BrandEaton
MYR1,052.24
Each
units
XEnergy NZM1 3 63A 25 kA 440V - - 90mm 145mm 84.5mm - - -