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. 806-7420
Mfr. Part No.SEA9NCB1004
SGD962.24
Each
units
Acti 9 SEA9 4 100 A - 500 V - Fixed - - - - - -
RS Stock No. 806-7424
Mfr. Part No.SEA9NCB1604
SGD922.17
Each
units
Acti 9 SEA9 4 160 A - 500 V - Fixed - - - - - -
RS Stock No. 874-4402
Mfr. Part No.3VA2225-5HL32-0AA0
BrandSiemens
SGD1,470.96
Each
units
Sentron 3VA 3 250 A 55 kA 690 V - Fixed 105mm 181mm 107mm Commercial Buildings Instantaneous MCCB
RS Stock No. 454-8073
Mfr. Part No.NZMB1-A100
BrandEaton
SGD364.21
Each
units
xEnergy NZM1 3P 100 A 25 kA 440 V - Fixed 90mm 145mm 84.5mm - - -
RS Stock No. 806-7436
Mfr. Part No.SEA9NCB2504
SGD1,037.04
Each
units
Acti 9 SEA9 4 250 A - 500 V - Fixed - - - - - -
RS Stock No. 454-8067
Mfr. Part No.NZMB1-A80
BrandEaton
SGD364.21
Each
units
xEnergy NZM1 3P 80 A 25 kA 440 V - Fixed 90mm 145mm 84.5mm - - -
RS Stock No. 806-7433
Mfr. Part No.SEA9NCB2004
SGD1,266.82
Each
units
Acti 9 SEA9 4 200 A - 500 V - Fixed - - - - - -
RS Stock No. 849-4248
Mfr. Part No.LV430630
SGD830.32
Each
units
NSX Range LV4 3 160 A 85 kA 690 V - Fixed 161mm 105mm 86mm - - -
RS Stock No. 849-3936
Mfr. Part No.LV429621
SGD444.26
Each
units
NSX Range LV4 3 100 A 85 kA 690 V - Fixed 161mm 105mm 86mm - - -
RS Stock No. 454-8051
Mfr. Part No.NZMB1-A63
BrandEaton
SGD299.79
Each
units
xEnergy NZM1 3P 63 A 25 kA 440 V - Fixed 90mm 145mm 84.5mm - - -
RS Stock No. 849-4598
Mfr. Part No.LV432694
SGD2,256.22
Each
units
NSX Range LV4 4 400 A 50 kA 690 V - Fixed 255mm 185mm 110mm - - -
RS Stock No. 454-8118
Mfr. Part No.NZMN1-A63
BrandEaton
SGD540.50
Each
units
xEnergy NZM1 3P 63 A 50 kA 690 V 500V Fixed 90mm 145mm 84.5mm - - -
RS Stock No. 849-4620
Mfr. Part No.LV432976
SGD4,095.34
Each
units
NSX Range LV4 3P - 85 kA - - - 255mm 140mm 110mm - - -
RS Stock No. 537-5551
Mfr. Part No.NZMN2-A250
BrandEaton
SGD1,109.49
Each
units
xEnergy NZM2 3P 250 A 50 kA 690 V 750V Fixed 105mm 184mm 149mm - - -
RS Stock No. 454-8045
Mfr. Part No.NZMB1-A50
BrandEaton
SGD451.43
Each
units
xEnergy NZM1 3P 50 A 25 kA 440 V - Fixed 90mm 145mm 84.5mm - - -
RS Stock No. 517-4819
Mfr. Part No.MGP0631L1
SGD265.78
Each
units
Powerpact4 MGP 1P 63 A 25 kA 230 V - Surface Mount - - - - - -
RS Stock No. 831-9169
Mfr. Part No.1SDA067411R1
BrandABB
SGD381.99
Each
units
Protecta XT1N 3 32 A 36 kA 690 V 500V DIN Rail Mount 76.2mm 130mm 70mm - - -
RS Stock No. 874-4360
Mfr. Part No.3VA1196-3EF36-0AA0
BrandSiemens
SGD392.22
Each
units
Sentron 3VA 3 16 A 25 kA 690 V 500V Fixed 76.2mm 130mm 88mm General Purpose, Residential Instantaneous MCCB
RS Stock No. 849-4602
Mfr. Part No.LV432893
SGD2,844.04
Each
units
NSX Range LV4 3 630 A 85 kA 690 V - Fixed 255mm 140mm 110mm - - -
RS Stock No. 849-3964
Mfr. Part No.LV429632
SGD471.42
Each
units
NSX Range LV4 3 100 A 85 kA 690 V - Fixed 161mm 105mm 86mm - - -
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Compact Nsxm Is The Smallest Size Molded Case ...
Description:
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