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 Rated AC Voltage Rated DC Voltage Mounting Style Length Width Depth Application Break Time Circuit Breaker Type
RS Stock No. 849-4087
Mfr. Part No.LV429686
TWD15,154.00
Each
units
NSX Range LV4 4P 100 A 100 kA 690 V - Fixed 161mm 140mm 86mm - - -
RS Stock No. 776-3348
Mfr. Part No.A9F90325
TWD13,252.00
Each
units
Acti 9 iC60L 3P 25 A 30 kA 440 V - DIN Rail Mount 54mm 78.5mm 85mm - - -
RS Stock No. 849-4295
Mfr. Part No.LV430672
TWD16,914.00
Each
units
NSX Range LV4 3P 160 A 100 kA 690 V - Fixed 161mm 105mm 86mm - - -
RS Stock No. 178-7846
Mfr. Part No.LV426802
TWD5,335.00
Each
units
- - - - - - 48V Clip-On 8mm - - - - -
RS Stock No. 849-4298
Mfr. Part No.LV430673
TWD16,914.00
Each
units
NSX Range LV4 3P 160 A 100 kA 690 V - Fixed 161mm 105mm 86mm - - -
RS Stock No. 178-7838
Mfr. Part No.LV426650
TWD8,878.00
Each
units
Compact NSXm 3 50 A - 690 V - Screw 81mm 137mm 80mm Distribution - -
RS Stock No. 178-7847
Mfr. Part No.LV426803
TWD5,335.00
Each
units
- - - - - 110 → 130 V 125V Clip-On 8mm - - - - -
RS Stock No. 178-7741
Mfr. Part No.LV426458
TWD16,350.00
Each
units
Compact NSXm 3 125 A 50 kA 690 V - Screw 81mm 137mm 80mm Distribution, Protection Time Delay MCCB
RS Stock No. 178-7964
Mfr. Part No.LV426760
TWD34,048.00
Each
units
Compact NSXm 3 25 A 25 kA 690 V - Screw 108mm 144mm 80mm Distribution, Protection Time Delay ELCB
RS Stock No. 849-4605
Mfr. Part No.LV432749
TWD51,473.00
Each
units
NSX Range LV4 3P - 85 kA - - - 255mm 140mm 110mm - - -
RS Stock No. 178-8063
Mfr. Part No.LV426108
TWD13,379.00
Each
units
Compact NSXm 3P 125 A 16 kA 690 V - DIN Rail Mount, Fixed Mount 81mm 80mm 137mm Distribution Protection Time Delay MCCB
RS Stock No. 849-4327
Mfr. Part No.LV430770
TWD22,968.00
Each
units
NSX Range LV4 3P 160 A 85 kA 690 V - Fixed 161mm 105mm 86mm - - -
RS Stock No. 179-9845
Mfr. Part No.LV510575
TWD9,561.00
Each
units
Easypact CVS100 → 250 Easypact CVS 4 100 A 36 kA 440 V - Fixed Mount 140mm 236mm 86mm Distribution Instantaneous MCCB
RS Stock No. 849-4399
Mfr. Part No.LV430863
TWD22,409.00
Each
units
NSX Range LV4 4P 160 A 90 kA 690 V - Fixed 161mm 140mm 86mm - - -
RS Stock No. 178-8089
Mfr. Part No.LV426154
TWD9,943.00
Each
units
Compact NSXm 3P 50 A 16 kA 690 V - DIN Rail Mount, Fixed Mount 81mm 80mm 137mm Distribution Protection Time Delay MCCB
RS Stock No. 178-8116
Mfr. Part No.LV426201
TWD10,578.00
Each
units
Compact NSXm 3P 25 A 25 kA 690 V - DIN Rail Mount, Fixed Mount 81mm 80mm 137mm Distribution Protection Time Delay MCCB
RS Stock No. 849-4188
Mfr. Part No.LV429851
TWD16,013.00
Each
units
NSX Range LV4 4P 100 A 90 kA 690 V - Fixed 161mm 140mm 86mm - - -
RS Stock No. 179-9823
Mfr. Part No.LV510336
TWD2,761.00
Each
units
Easypact CVS100 → 250 Easypact CVS 3 100 A 36 kA 440 V - Fixed Mount 105mm 161mm 86mm Distribution Instantaneous MCCB
RS Stock No. 178-7986
Mfr. Part No.LV426785
TWD43,654.00
Each
units
Compact NSXm 4 25 A 50 kA 690 V - Screw 108mm 144mm 80mm Distribution, Protection Time Delay ELCB
RS Stock No. 178-8231
Mfr. Part No.LV426376
TWD17,463.00
Each
units
Compact NSXm 4P 80 A 36 kA 690 V - DIN Rail Mount, Fixed Mount 108mm 80mm 137mm Distribution Protection Time Delay MCCB