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. 849-3952
Mfr. Part No.LV429630
R 3,593.24
Each
units
NSX Range LV4 3P 100 A 85 kA 690 V - Fixed 161mm 105mm 86mm - - -
RS stock no. 849-3964
Mfr. Part No.LV429632
R 3,526.61
Each
units
NSX Range LV4 3P 100 A 85 kA 690 V - Fixed 161mm 105mm 86mm - - -
RS stock no. 849-4605
Mfr. Part No.LV432749
R 8,508.98
Each
units
NSX Range LV4 3P - 85 kA - - - 255mm 140mm 110mm - - -
RS stock no. 849-4248
Mfr. Part No.LV430630
R 4,248.70
Each
units
NSX Range LV4 3P 160 A 85 kA 690 V - Fixed 161mm 105mm 86mm - - -
RS stock no. 849-4087
Mfr. Part No.LV429686
R 4,877.49
Each
units
NSX Range LV4 4P 100 A 100 kA 690 V - Fixed 161mm 140mm 86mm - - -
RS stock no. 849-4377
Mfr. Part No.LV430851
R 6,583.49
Each
units
NSX Range LV4 4P 160 A 90 kA 690 V - Fixed 161mm 140mm 86mm - - -
RS stock no. 849-4591
Mfr. Part No.LV432695
R 14,011.36
Each
units
NSX Range LV4 3P 400 A 85 kA 690 V - Fixed 255mm 140mm 110mm - - -
RS stock no. 742-2167
Mfr. Part No.LV432695
R 17,976.04
Each
units
NSX Range LV 3P 400 A 20 kA 690 V - Fixed 255mm 140mm 110mm - - -
RS stock no. 849-4242
Mfr. Part No.LV430631
R 4,248.70
Each
units
NSX Range LV4 3P 160 A 85 kA 690 V - Fixed 161mm 105mm 86mm - - -
RS stock no. 742-2132
Mfr. Part No.LV430671
R 7,243.14
Each
units
NSX Range LV 3P 160 A 10 kA 690 V - Fixed 161mm 105mm 86mm - - -
RS stock no. 849-4239
Mfr. Part No.LV430620
R 5,741.06
Each
units
NSX Range LV4 3P 160 A 85 kA 690 V - Fixed 161mm 105mm 86mm - - -
RS stock no. 849-4286
Mfr. Part No.LV430671
R 5,684.29
Each
units
NSX Range LV4 3P 160 A 100 kA 690 V - Fixed 161mm 105mm 86mm - - -
RS stock no. 849-4034
Mfr. Part No.LV429670
R 4,284.96
Each
units
NSX Range LV4 3P 100 A 100 kA 690 V - Fixed 161mm 105mm 86mm - - -
RS stock no. 849-4015
Mfr. Part No.LV429650
R 5,216.66
Each
units
NSX Range LV4 4P 100 A 85 kA 690 V - Fixed 161mm 140mm 86mm - - -
RS stock no. 849-4254
Mfr. Part No.LV430633
R 4,243.37
Each
units
NSX Range LV4 3P 160 A 85 kA 690 V - Fixed 161mm 105mm 86mm - - -
RS stock no. 742-2135
Mfr. Part No.LV430670
R 9,064.56
Each
units
NSX Range LV 3P 160 A 10 kA 690 V - Fixed 161mm 105mm 86mm - - -
RS stock no. 849-4282
Mfr. Part No.LV430670
R 7,119.12
Each
units
NSX Range LV4 3P 160 A 100 kA 690 V - Fixed 161mm 105mm 86mm - - -
RS stock no. 849-4352
Mfr. Part No.LV430800
R 6,663.46
Each
units
NSX Range LV4 4P 160 A 100 kA 690 V - Fixed 161mm 140mm 86mm - - -
RS stock no. 849-4355
Mfr. Part No.LV430801
R 11,036.10
Each
units
NSX Range LV4 4P 160 A 100 kA 690 V - Fixed 161mm 140mm 86mm - - -
RS stock no. 742-2123
Mfr. Part No.LV429670
R 5,714.28
Each
units
NSX Range LV 3P 100 A 10 kA 690 V - Fixed 161mm 105mm 86mm - - -