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. 831-9172
Mfr. Part No.1SDA067416R1
BrandABB
R 3,721.72
Each
units
Protecta XT1N 3P 100 A 36 kA 690 V 500V DIN Rail Mount 76.2mm 130mm 70mm - - -
RS stock no. 831-9185
Mfr. Part No.1SDA068210R1
BrandABB
R 5,388.22
Each
units
Protecta XT3D 3P 250 A - 690 V 500V DIN Rail Mount 105mm 150mm 70mm - - -
RS stock no. 831-9175
Mfr. Part No.1SDA067418R1
BrandABB
R 5,819.92
Each
units
Protecta XT1N 3P 160 A 36 kA 690 V 500V - 76.2mm 130mm 70mm - - -
RS stock no. 831-9179
Mfr. Part No.1SDA068058R1
BrandABB
R 7,422.43
Each
units
Protecta XT3N 3P 200 A 36 kA 690 V 500V DIN Rail Mount 105mm 150mm 70mm - - -
RS stock no. 834-2725
Mfr. Part No.T2H025TW
BrandABB
R 4,896.01
Each
units
TMAX T2 3P 25 A 65 kA @ 480 V ac 480 V - Fixed 90mm 130mm 103mm - - -
RS stock no. 831-9181
Mfr. Part No.1SDA068208R1
BrandABB
R 4,830.49
Each
units
Protecta XT1D 3P 160 A 36 kA 690 V 500V DIN Rail Mount 76.2mm 130mm 70mm - - -
RS stock no. 834-2721
Mfr. Part No.T2H015TW
BrandABB
R 4,896.01
Each
units
TMAX T2 3P 15 A 65 kA @ 480 V ac 480 V - Fixed 90mm 130mm 103mm - - -
RS stock no. 834-7215
Mfr. Part No.A1A090TW
BrandABB
R 2,365.01
Each
units
Formula A1A 3P 90 A 5 kA @ 250 V dc, 10 kA @ 240 V ac 240 V 250V Fixed 76mm 60mm 130mm - - -
RS stock no. 834-7221
Mfr. Part No.A1A100TW
BrandABB
R 2,365.01
Each
units
Formula A1A 3P 100 A 5 kA @ 250 V dc, 10 kA @ 240 V ac 240 V 250V Fixed 76mm 60mm 130mm - - -
RS stock no. 834-7186
Mfr. Part No.A1A060TW
BrandABB
R 2,010.28
Each
units
Formula A1A 3P 60 A 5 kA @ 250 V dc, 10 kA @ 240 V ac 240 V 250V Fixed 76mm 60mm 130mm - - -
RS stock no. 834-7240
Mfr. Part No.A1N015TW-2
BrandABB
R 1,832.91
Each
units
Formula A1N DP 15 A 10 kA @ 250 V dc, 25 kA @ 240 V ac 240 V 250V Fixed 51mm 60mm 130mm - - -
RS stock no. 834-7142
Mfr. Part No.A1A020TW-2
BrandABB
R 1,596.30
Each
units
Formula A1A DP 20 A 5 kA @ 250 V dc, 10 kA @ 240 V ac 240 V 250V Fixed 51mm 60mm 130mm - - -
RS stock no. 834-7247
Mfr. Part No.A1N020TW-1
BrandABB
R 1,182.72
Each
units
Formula A1N SP 20 A 10 kA @ 125 V dc, 18 kA @ 240 V ac 240 V 125V Fixed 25mm 60mm 130mm - - -
RS stock no. 834-2737
Mfr. Part No.T2S015TW
BrandABB
R 3,436.04
Each
units
TMAX T2 3P 15 A 35 kA @ 480 V ac 480 V - Fixed 90mm 130mm 103mm - - -
RS stock no. 834-7271
Mfr. Part No.A1N040TW
BrandABB
R 2,128.39
Each
units
Formula A1N 3P 40 A 10 kA @ 250 V dc, 25 kA @ 240 V ac 240 V 250V Fixed 76mm 60mm 130mm - - -
RS stock no. 834-7209
Mfr. Part No.A1A080TW
BrandABB
R 2,365.01
Each
units
Formula A1A 3P 80 A 5 kA @ 250 V dc, 10 kA @ 240 V ac 240 V 250V Fixed 76mm 60mm 130mm - - -
RS stock no. 831-9188
Mfr. Part No.1SDA068059R1
BrandABB
R 9,966.21
Each
units
Protecta XT3N 3P 250 A 36 kA 690 V 500V DIN Rail Mount 105mm 150mm 70mm - - -
RS stock no. 834-7192
Mfr. Part No.A1A070TW
BrandABB
R 2,365.01
Each
units
Formula A1A 3P 70 A 5 kA @ 250 V dc, 10 kA @ 240 V ac 240 V 250V Fixed 76mm 60mm 130mm - - -
RS stock no. 834-7146
Mfr. Part No.A1A025TW
BrandABB
R 2,010.28
Each
units
Formula A1A 3P 25 A 5 kA @ 250 V dc, 10 kA @ 240 V ac 240 V 250V Fixed 76mm 60mm 130mm - - -
RS stock no. 834-7275
Mfr. Part No.A1N040TW-1
BrandABB
R 1,182.72
Each
units
Formula A1N SP 40 A 10 kA @ 125 V dc, 18 kA @ 240 V ac 240 V 125V Fixed 25mm 60mm 130mm - - -