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 at Maximum Voltage Rating Rated AC Voltage Rated DC Voltage Mounting Style Length Width Depth Break Time Circuit Breaker Type Mounting Hole Diameter
RS Stock No. 874-4155
Mfr. Part No.3VA1110-3EF36-0AA0
BrandSiemens
$744.40
Each
units
Sentron 3VA 3 100A 25 kA 690V 500V - 76.2mm 130mm 88mm Instantaneous MCCB 4.2mm
RS Stock No. 849-4419
Mfr. Part No.LV431630
$2,652.68
Each
units
NSX Range LV4 3 250A 85 kA 690V - - 161mm 105mm 86mm - - -
RS Stock No. 849-4602
Mfr. Part No.LV432893
$5,602.22
Each
units
NSX Range LV4 3 630A 85 kA 690V - - 255mm 140mm 110mm - - -
RS Stock No. 831-9172
Mfr. Part No.1SDA067416R1 XT1N 160 TMD 100-1000 3p F F
BrandABB
$892.99
Each
units
Protecta XT1N 3 100A 36 kA 690V 500V DIN Rail Mount 76.2mm 130mm 70mm - - -
RS Stock No. 831-9175
Mfr. Part No.1SDA067418R1 XT1N 160 TMD 160-1600 3p F F
BrandABB
$1,242.52
Each
units
Protecta XT1N 3 160A 36 kA 690V 500V - 76.2mm 130mm 70mm - - -
RS Stock No. 849-4119
Mfr. Part No.LV429770
$2,280.41
Each
units
NSX Range LV4 3 100A 85 kA 690V - - 161mm 105mm 86mm - - -
RS Stock No. 537-5551
Mfr. Part No.259094 & NZMN2-A250
BrandEaton
$1,346.22
Each
units
xEnergy NZM2 3 250A 50 kA 690V 750V - 105mm 184mm 149mm - - -
RS Stock No. 454-8051
Mfr. Part No.259077 & NZMB1-A63
BrandEaton
$441.93
Each
units
xEnergy NZM1 3 63A 25 kA 440V - - 90mm 145mm 84.5mm - - -
RS Stock No. 849-4248
Mfr. Part No.LV430630
$1,965.41
Each
units
NSX Range LV4 3 160A 85 kA 690V - - 161mm 105mm 86mm - - -
RS Stock No. 831-9188
Mfr. Part No.1SDA068059R1 XT3N 250 TMD 250-2500 3p F F
BrandABB
$1,709.05
Each
units
Protecta XT3N 3 250A 36 kA 690V 500V DIN Rail Mount 105mm 150mm 70mm - - -
RS Stock No. 849-3952
Mfr. Part No.LV429630
$1,200.82
Each
units
NSX Range LV4 3 100A 85 kA 690V - - 161mm 105mm 86mm - - -
RS Stock No. 454-8073
Mfr. Part No.259079 & NZMB1-A100
BrandEaton
$465.90
Each
units
xEnergy NZM1 3 100A 25 kA 440V - Fixed 90mm 145mm 84.5mm - - -
RS Stock No. 628-8076
Mfr. Part No.266005 & PN2-160
BrandEaton
$595.46
1 Box of 1
Box(es)
- PN2 3 160A 80 kA 690V - - 105mm 184mm 149mm - - -
RS Stock No. 831-9163
Mfr. Part No.1SDA067414R1 XT1N 160 TMD 63-630 3p F F
BrandABB
$645.35
Each
units
Protecta XT1N 3 63A 36 kA 690V 500V DIN Rail Mount 76.2mm 130mm 70mm - - -
RS Stock No. 849-4535
Mfr. Part No.LV431831
$2,975.44
Each
units
NSX Range LV4 3 250A 90 kA 690V - - 161mm 105mm 86mm - - -
RS Stock No. 776-3348
Mfr. Part No.A9F90325
$706.73
Each
units
Acti 9 iC60L 3 25A 30 kA 440V - DIN Rail Mount 54mm 78.5mm 85mm - - -
RS Stock No. 849-4286
Mfr. Part No.LV430671
$2,362.62
Each
units
NSX Range LV4 3 160A 100 kA 690V - - 161mm 105mm 86mm - - -
RS Stock No. 849-4532
Mfr. Part No.LV431830
$2,858.71
Each
units
NSX Range LV4 3 250A 90 kA 690V - - 161mm 105mm 86mm - - -
RS Stock No. 849-4595
Mfr. Part No.LV432696
$6,107.40
Each
units
NSX Range LV4 4 400A 85 kA 690V - - 255mm 185mm 110mm - - -
RS Stock No. 874-4143
Mfr. Part No.3VA1110-3ED36-0AA0
BrandSiemens
$648.92
Each
units
Sentron 3VA 3 100A 25 kA 690V 500V - 76.2mm 130mm 88mm Instantaneous MCCB 4.2mm