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 MCCBAlthough 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. 874-4155
Mfr. Part No.3VA1110-3EF36-0AA0
BrandSiemens
$405.58
Each
units
Sentron 3VA 3P 100 A 25 kA 690 V 500V Fixed 76.2mm 130mm 88mm General Purpose, Residential Instantaneous MCCB
RS Stock No. 849-4419
Mfr. Part No.LV431630
$1,420.91
Each
units
NSX Range LV4 3P 250 A 85 kA 690 V - Fixed 161mm 105mm 86mm - - -
RS Stock No. 849-4602
Mfr. Part No.LV432893
$3,034.62
Each
units
NSX Range LV4 3P 630 A 85 kA 690 V - Fixed 255mm 140mm 110mm - - -
RS Stock No. 831-9172
Mfr. Part No.1SDA067416R1
BrandABB
$418.62
Each
units
Protecta XT1N 3P 100 A 36 kA 690 V 500V DIN Rail Mount 76.2mm 130mm 70mm - - -
RS Stock No. 831-9175
Mfr. Part No.1SDA067418R1
BrandABB
$659.30
Each
units
Protecta XT1N 3P 160 A 36 kA 690 V 500V - 76.2mm 130mm 70mm - - -
RS Stock No. 849-4119
Mfr. Part No.LV429770
$871.47
Each
units
NSX Range LV4 3P 100 A 85 kA 690 V - Fixed 161mm 105mm 86mm - - -
RS Stock No. 454-8051
Mfr. Part No.NZMB1-A63
BrandEaton
$289.84
Each
units
xEnergy NZM1 3P 63 A 25 kA 440 V - Fixed 90mm 145mm 84.5mm - - -
RS Stock No. 849-4248
Mfr. Part No.LV430630
$885.96
Each
units
NSX Range LV4 3P 160 A 85 kA 690 V - Fixed 161mm 105mm 86mm - - -
RS Stock No. 537-5551
Mfr. Part No.NZMN2-A250
BrandEaton
$1,208.87
Each
units
xEnergy NZM2 3P 250 A 50 kA 690 V 750V Fixed 105mm 184mm 149mm - - -
RS Stock No. 831-9188
Mfr. Part No.1SDA068059R1
BrandABB
$1,130.72
Each
units
Protecta XT3N 3P 250 A 36 kA 690 V 500V DIN Rail Mount 105mm 150mm 70mm - - -
RS Stock No. 849-3952
Mfr. Part No.LV429630
$515.43
Each
units
NSX Range LV4 3P 100 A 85 kA 690 V - Fixed 161mm 105mm 86mm - - -
RS Stock No. 454-8073
Mfr. Part No.NZMB1-A100
BrandEaton
$408.71
Each
units
xEnergy NZM1 3P 100 A 25 kA 440 V - Fixed 90mm 145mm 84.5mm - - -
RS Stock No. 831-9163
Mfr. Part No.1SDA067414R1
BrandABB
$407.58
Each
units
Protecta XT1N 3P 63 A 36 kA 690 V 500V DIN Rail Mount 76.2mm 130mm 70mm - - -
RS Stock No. 628-8076
Mfr. Part No.PN2-160
BrandEaton
$476.18
1 Box of 1
Box(es)
- PN2 3P 160 A 80 kA 690 V - Fixed 105mm 184mm 149mm - - -
RS Stock No. 874-4143
Mfr. Part No.3VA1110-3ED36-0AA0
BrandSiemens
$447.76
Each
units
Sentron 3VA 3P 100 A 25 kA 690 V 500V Fixed 76.2mm 130mm 88mm General Purpose, Residential Instantaneous MCCB
RS Stock No. 849-4286
Mfr. Part No.LV430671
$863.19
Each
units
NSX Range LV4 3P 160 A 100 kA 690 V - Fixed 161mm 105mm 86mm - - -
RS Stock No. 849-4595
Mfr. Part No.LV432696
$2,620.62
Each
units
NSX Range LV4 4P 400 A 85 kA 690 V - Fixed 255mm 185mm 110mm - - -
RS Stock No. 849-4532
Mfr. Part No.LV431830
$1,366.20
Each
units
NSX Range LV4 3P 250 A 90 kA 690 V - Fixed 161mm 105mm 86mm - - -
RS Stock No. 849-4535
Mfr. Part No.LV431831
$1,140.57
Each
units
NSX Range LV4 3P 250 A 90 kA 690 V - Fixed 161mm 105mm 86mm - - -
RS Stock No. 776-3348
Mfr. Part No.A9F90325
$639.01
Each
units
Acti 9 iC60L 3P 25 A 30 kA 440 V - DIN Rail Mount 54mm 78.5mm 85mm - - -
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