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. 849-4201
Mfr. Part No.LV429857
MYR2,230.18
Each
units
NSX Range LV4 4 100A 90 kA 690V - - 161mm 140mm 86mm - - -
RS Stock No. 849-4147
Mfr. Part No.LV429805
MYR4,362.18
Each
units
NSX Range LV4 4 100A 90 kA 690V - - 161mm 140mm 86mm - - -
RS Stock No. 628-7988
Mfr. Part No.265720 & NZMN1-M63
BrandEaton
MYR1,551.24
1 Box of 1
Box(es)
XEnergy NZM1 3 63A 50 kA 690V 500V - 90mm 145mm 84.5mm - - -
New
RS Stock No. 209-7029
Mfr. Part No.3VA1220-6EF32-0AA0
BrandSiemens
MYR5,060.13
Each
units
Sentron 3VA1 3 200A - - - - - - - - - -
RS Stock No. 831-9188
Mfr. Part No.1SDA068059R1
BrandABB
MYR3,830.87
Each
units
Protecta XT3N 3 250A 36 kA 690V 500V DIN Rail Mount 105mm 150mm 70mm - - -
New
RS Stock No. 209-7025
Mfr. Part No.3VA1196-5EE42-0AA0
BrandSiemens
MYR1,937.70
Each
units
Sentron 3VA1 4 16A - - - - - - - - - -
New
RS Stock No. 209-6836
Mfr. Part No.3VA1150-6ED42-0AA0
BrandSiemens
MYR1,853.45
Each
units
SENTRON 3VA1 4 50A - - - - - - - - - -
New
RS Stock No. 210-1691
Mfr. Part No.3VA1220-5EF42-0AA0
BrandSiemens
MYR5,739.38
Each
units
SENTRON 3VA1 4 200A - - - - - - - - - -
New
RS Stock No. 209-7064
Mfr. Part No.3VA2116-5KP32-0AA0
BrandSiemens
MYR8,108.85
Each
units
Sentron 3VA2 3 160A - - - - - - - - - -
New
RS Stock No. 209-7030
Mfr. Part No.3VA1225-5EF32-0AA0
BrandSiemens
MYR5,060.13
Each
units
Sentron 3VA1 3 250A - - - - - - - - - -
RS Stock No. 849-4447
Mfr. Part No.LV431651
MYR5,301.95
Each
units
NSX Range LV4 4 250A 85 kA 690V - - 161mm 140mm 86mm - - -
RS Stock No. 179-9745
Mfr. Part No.EZD400E3250K
MYR1,573.26
Each
units
EZD EZD400E 3 250A 36 kA 440V - - 140mm 255mm 110mm Instantaneous MCCB -
New
RS Stock No. 210-1695
Mfr. Part No.3VA1332-4EF32-0AA0
BrandSiemens
MYR6,634.51
Each
units
SENTRON 3VA1 3 320A - - - - - - - - - -
RS Stock No. 178-8082
Mfr. Part No.LV426127
MYR2,230.18
Each
units
Compact NSXm 4 100A 16 kA 690V - - 108mm 80mm 137mm Time Delay MCCB 4.5mm
New
RS Stock No. 209-6748
Mfr. Part No.3VA1110-4EF42-0AA0
BrandSiemens
MYR2,553.76
Each
units
SENTRON 3VA1 4 100A - - - - - - - - - -
RS Stock No. 178-8058
Mfr. Part No.LV426103
MYR1,437.70
Each
units
Compact NSXm 3 40A 16 kA 690V - - 81mm 80mm 137mm Time Delay MCCB 4.5mm
RS Stock No. 849-3955
Mfr. Part No.LV429626
MYR1,563.93
Each
units
NSX Range LV4 3 100A 85 kA 690V - - 161mm 105mm 86mm - - -
RS Stock No. 178-8235
Mfr. Part No.LV426400
MYR1,765.31
Each
units
Compact NSXm 3 16A 50 kA 690V - - 81mm 80mm 137mm Time Delay MCCB 4.5mm
RS Stock No. 849-4377
Mfr. Part No.LV430851
MYR3,695.93
Each
units
NSX Range LV4 4 160A 90 kA 690V - - 161mm 140mm 86mm - - -
New
RS Stock No. 209-7026
Mfr. Part No.3VA1196-5GF46-0AA0
BrandSiemens
MYR2,453.72
Each
units
Sentron 3VA1 4 16A - - - - - - - - - -