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. 849-4179
Mfr. Part No.LV429850
HK$4,518.80
Each
units
NSX Range LV4 4 100A 90 kA 690V - - 161mm 140mm 86mm - - -
RS Stock No. 849-4377
Mfr. Part No.LV430851
HK$6,384.48
Each
units
NSX Range LV4 4 160A 90 kA 690V - - 161mm 140mm 86mm - - -
RS Stock No. 849-4188
Mfr. Part No.LV429851
HK$4,518.80
Each
units
NSX Range LV4 4 100A 90 kA 690V - - 161mm 140mm 86mm - - -
RS Stock No. 849-4191
Mfr. Part No.LV429856
HK$3,852.49
Each
units
NSX Range LV4 4 100A 90 kA 690V - - 161mm 140mm 86mm - - -
RS Stock No. 849-4545
Mfr. Part No.LV431841
HK$8,904.35
Each
units
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RS Stock No. 849-4181
Mfr. Part No.LV429852
HK$3,852.49
Each
units
NSX Range LV4 4 100A 90 kA 690V - - 161mm 140mm 86mm - - -
RS Stock No. 849-3968
Mfr. Part No.LV429633
HK$2,943.89
Each
units
NSX Range LV4 3 100A 85 kA 690V - - 161mm 105mm 86mm - - -
RS Stock No. 849-4194
Mfr. Part No.LV429854
HK$3,852.49
Each
units
NSX Range LV4 4 100A 90 kA 690V - - 161mm 140mm 86mm - - -
RS Stock No. 849-4614
Mfr. Part No.LV432895
HK$19,795.51
Each
units
NSX Range LV4 3 630A 85 kA 690V - - 255mm 140mm 110mm - - -
RS Stock No. 849-4015
Mfr. Part No.LV429650
HK$4,555.15
Each
units
NSX Range LV4 4 100A 85 kA 690V - - 161mm 140mm 86mm - - -
RS Stock No. 849-3952
Mfr. Part No.LV429630
HK$3,016.57
Each
units
NSX Range LV4 3 100A 85 kA 690V - - 161mm 105mm 86mm - - -
RS Stock No. 849-4018
Mfr. Part No.LV429651
HK$4,555.15
Each
units
NSX Range LV4 4 100A 85 kA 690V - - 161mm 140mm 86mm - - -
RS Stock No. 776-3348
Mfr. Part No.A9F90325
HK$3,761.63
Each
units
Acti 9 iC60L 3 25A 30 kA 440V - DIN Rail Mount 54mm 78.5mm 85mm - - -
RS Stock No. 849-4012
Mfr. Part No.LV429652
HK$3,840.38
Each
units
NSX Range LV4 4 100A 85 kA 690V - - 161mm 140mm 86mm - - -
RS Stock No. 849-3983
Mfr. Part No.LV429637
HK$2,943.89
Each
units
NSX Range LV4 3 100A 85 kA 690V - - 161mm 105mm 86mm - - -
RS Stock No. 178-7831
Mfr. Part No.LV426600
HK$2,186.08
Each
units
Compact NSXm 3 50A - 690V - - 81mm 137mm 80mm - - -
RS Stock No. 178-7804
Mfr. Part No.LV426556
HK$3,013.74
Each
units
Compact NSXm 3 80A 70 kA 690V - - 81mm 137mm 80mm Time Delay MCCB -
RS Stock No. 178-7745
Mfr. Part No.LV426461
HK$2,171.43
Each
units
Compact NSXm 4 25A 50 kA 690V - - 108mm 137mm 80mm Time Delay MCCB -
RS Stock No. 178-7832
Mfr. Part No.LV426601
HK$2,204.10
Each
units
Compact NSXm 3 100A - 690V - - 81mm 137mm 80mm - - -
RS Stock No. 178-7840
Mfr. Part No.LV426652
HK$3,452.71
Each
units
Compact NSXm 3 160A - 690V - - 81mm 137mm 80mm - - -