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. 849-4208
Mfr. Part No.LV429861
$830.07
Each
units
NSX Range LV4 4P 100 A 90 kA 690 V - Fixed 161mm 140mm 86mm - - -
RS Stock No. 731-9544
Mfr. Part No.4 067 76
BrandLegrand
$42.81
Each
units
- DNX3 1P 25 A 4.5 kA 230 V - - - - - - - -
RS Stock No. 628-8060
Mfr. Part No.PN1-100
BrandEaton
$327.68
1 Box of 1
Box(es)
- PN1 3P 100 A 80 kA 690 V - Fixed 90mm 145mm 84.5mm - - -
RS Stock No. 849-3949
Mfr. Part No.LV429623
$461.61
Each
units
NSX Range LV4 3P 100 A 85 kA 690 V - Fixed 161mm 105mm 86mm - - -
RS Stock No. 628-8054
Mfr. Part No.NZMN2-M200
BrandEaton
$1,335.09
1 Box of 1
Box(es)
xEnergy NZM2 3P 200 A 50 kA 690 V 750V Fixed 105mm 184mm 149mm - - -
RS Stock No. 874-4219
Mfr. Part No.3VA1116-4EE36-0AA0
BrandSiemens
$910.24
Each
units
Sentron 3VA 3P 160 A 36 kA 690 V 500V Fixed 76.2mm 130mm 88mm General Purpose, Residential Instantaneous MCCB
RS Stock No. 454-8089
Mfr. Part No.NZMB1-A125
BrandEaton
$501.46
Each
units
xEnergy NZM1 3P 125 A 25 kA 440 V - Fixed 90mm 145mm 84.5mm - - -
RS Stock No. 849-4273
Mfr. Part No.LV430650
$1,258.56
Each
units
NSX Range LV4 4P 160 A 85 kA 690 V - Fixed 161mm 140mm 86mm - - -
RS Stock No. 849-3977
Mfr. Part No.LV429634
$503.01
Each
units
NSX Range LV4 3P 100 A 85 kA 690 V - Fixed 161mm 105mm 86mm - - -
RS Stock No. 849-4517
Mfr. Part No.LV431792
$1,343.43
Each
units
NSX Range LV4 3P 250 A 85 kA 690 V - Fixed 161mm 105mm 86mm - - -
RS Stock No. 849-4018
Mfr. Part No.LV429651
$778.32
Each
units
NSX Range LV4 4P 100 A 85 kA 690 V - Fixed 161mm 140mm 86mm - - -
RS Stock No. 849-4469
Mfr. Part No.LV431673
$1,035.00
Each
units
NSX Range LV4 3P 250 A 85 kA 690 V - Fixed 161mm 105mm 86mm - - -
RS Stock No. 849-4223
Mfr. Part No.LV429865
$705.87
Each
units
NSX Range LV4 4P 100 A 90 kA 690 V - Fixed 161mm 140mm 86mm - - -
RS Stock No. 874-4212
Mfr. Part No.3VA1116-4EF36-0AA0
BrandSiemens
$1,005.98
Each
units
Sentron 3VA 3P 160 A 36 kA 690 V 500V Fixed 76.2mm 130mm 88mm General Purpose, Residential Instantaneous MCCB
RS Stock No. 849-4129
Mfr. Part No.LV429790
$1,003.95
Each
units
NSX Range LV4 3P 100 A 100 kA 690 V - Fixed 161mm 105mm 86mm - - -
RS Stock No. 628-7988
Mfr. Part No.NZMN1-M63
BrandEaton
$467.17
1 Box of 1
Box(es)
xEnergy NZM1 3P 63 A 50 kA 690 V 500V Fixed 90mm 145mm 84.5mm - - -
RS Stock No. 849-4251
Mfr. Part No.LV430632
$674.82
Each
units
NSX Range LV4 3P 160 A 85 kA 690 V - Fixed 161mm 105mm 86mm - - -
RS Stock No. 849-3968
Mfr. Part No.LV429633
$503.01
Each
units
NSX Range LV4 3P 100 A 85 kA 690 V - Fixed 161mm 105mm 86mm - - -
RS Stock No. 849-4175
Mfr. Part No.LV429847
$567.18
Each
units
NSX Range LV4 3P 100 A 90 kA 690 V - Fixed 161mm 105mm 86mm - - -
RS Stock No. 849-4611
Mfr. Part No.LV432894
$3,661.83
Each
units
NSX Range LV4 4P 630 A 85 kA 690 V - Fixed 255mm 185mm 110mm - - -
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