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. 849-4428
Mfr. Part No.LV431640
£809.00
Each
Units
NSX Range LV4 4P 250 A 85 kA 690 V - Fixed 161mm 140mm 86mm - - -
RS Stock No. 517-4875
Mfr. Part No.MGP1001L3
£138.00
Each
Units
Powerpact4 MGP 1P 100 A 25 kA 230 V - Surface Mount - - - - - -
RS Stock No. 537-5589
Mfr. Part No.NZMN2-VE250
BrandEaton
£610.37
Each
Units
xEnergy NZM2 3P 250 A 50 kA 690 V 750V Fixed 105mm 184mm 149mm - - -
RS Stock No. 849-3961
Mfr. Part No.LV429631
£249.00
Each
Units
NSX Range LV4 3P 100 A 85 kA 690 V - Fixed 161mm 105mm 86mm - - -
RS Stock No. 849-4608
Mfr. Part No.LV432776
£1,436.00
Each
Units
NSX Range LV4 3P - 85 kA - - - 255mm 140mm 110mm - - -
RS Stock No. 849-3999
Mfr. Part No.LV429642
£294.00
Each
Units
NSX Range LV4 4P 100 A 85 kA 690 V - Fixed 161mm 140mm 86mm - - -
RS Stock No. 628-8026
Mfr. Part No.NZMN2-M160
BrandEaton
£423.81
1 Box of 1
Box(es)
xEnergy NZM2 3P 160 A 50 kA 690 V 750V Fixed 105mm 184mm 149mm - - -
RS Stock No. 849-3968
Mfr. Part No.LV429633
£243.00
Each
Units
NSX Range LV4 3P 100 A 85 kA 690 V - Fixed 161mm 105mm 86mm - - -
RS Stock No. 849-4377
Mfr. Part No.LV430851
£527.00
Each
Units
NSX Range LV4 4P 160 A 90 kA 690 V - Fixed 161mm 140mm 86mm - - -
RS Stock No. 537-5567
Mfr. Part No.NZMN2-VE100
BrandEaton
£364.06
Each
Units
xEnergy NZM2 3P 100 A 50 kA 690 V 750V Fixed 105mm 184mm 149mm - - -
RS Stock No. 537-5595
Mfr. Part No.NZMH2-VE100
BrandEaton
£398.49
Each
Units
xEnergy NZM2 3P 100 A 150 kA 690 V 750V Fixed 105mm 184mm 149mm - - -
RS Stock No. 849-4150
Mfr. Part No.LV429840
£280.00
Each
Units
NSX Range LV4 3P 100 A 90 kA 690 V - Fixed 161mm 105mm 86mm - - -
RS Stock No. 742-2110
Mfr. Part No.LV429840
£280.00
Each
Units
NSX Range LV 3P 100 A 10 kA 690 V - Fixed 161mm 105mm 86mm - - -
RS Stock No. 874-4137
Mfr. Part No.3VA1110-4ED36-0AA0
BrandSiemens
£206.69
Each
Units
Sentron 3VA 3P 100 A 25 kA, 36 kA 690 V 500V Fixed 76.2mm 130mm 88mm General Purpose, Residential Instantaneous MCCB
RS Stock No. 537-5618
Mfr. Part No.NZMH2-VE250
BrandEaton
£720.85
Each
Units
xEnergy NZM2 3P 250 A 150 kA 690 V 750V Fixed 105mm 184mm 149mm - - -
RS Stock No. 849-3970
Mfr. Part No.LV429635
£243.00
Each
Units
NSX Range LV4 3P 100 A 85 kA 690 V - Fixed 161mm 105mm 86mm - - -
RS Stock No. 849-4535
Mfr. Part No.LV431831
£551.00
Each
Units
NSX Range LV4 3P 250 A 90 kA 690 V - Fixed 161mm 105mm 86mm - - -
RS Stock No. 742-2123
Mfr. Part No.LV429670
£310.00
Each
Units
NSX Range LV 3P 100 A 10 kA 690 V - Fixed 161mm 105mm 86mm - - -
RS Stock No. 849-4368
Mfr. Part No.LV430841
£372.00
Each
Units
NSX Range LV4 3P 160 A 90 kA 690 V - Fixed 161mm 105mm 86mm - - -
RS Stock No. 849-4618
Mfr. Part No.LV432896
£1,897.00
Each
Units
NSX Range LV4 4P 630 A 85 kA 690 V - Fixed 255mm 185mm 110mm - - -
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