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 Breaking Capacity at Maximum Voltage Rating Rated AC Voltage Rated DC Voltage Mounting Style Length Width Depth Break Time Circuit Breaker Type
RS Stock No. 537-5545
Mfr. Part No.259093 & NZMN2-A200
BrandEaton
TWD19,481.00
Each
units
XEnergy NZM2 3 200A - 50 kA 690V 750V - 105mm 184mm 149mm - -
RS Stock No. 831-9188
Mfr. Part No.1SDA068059R1
BrandABB
TWD24,225.00
Each
units
Protecta XT3N 3 250A - 36 kA 690V 500V DIN Rail Mount 105mm 150mm 70mm - -
RS Stock No. 454-8130
Mfr. Part No.259085 & NZMN1-A100
BrandEaton
TWD15,549.00
Each
units
XEnergy NZM1 3 100A - 50 kA 690V 750V - 90mm 145mm 84.5mm - -
RS Stock No. 628-8105
Mfr. Part No.266007 & PN2-250
BrandEaton
TWD15,898.00
1 Box of 1
Box(es)
- PN2 3 250A - 80 kA 690V - - 105mm 184mm 149mm - -
RS Stock No. 454-8045
Mfr. Part No.259076 & NZMB1-A50
BrandEaton
TWD10,167.00
Each
units
XEnergy NZM1 3 50A - 25 kA 440V - - 90mm 145mm 84.5mm - -
RS Stock No. 776-3348
Mfr. Part No.A9F90325
TWD13,770.00
Each
units
Acti 9 iC60L 3 25A - 30 kA 440V - DIN Rail Mount 54mm 78.5mm 85mm - -
RS Stock No. 874-4234
Mfr. Part No.3VA1120-4ED36-0AA0
BrandSiemens
TWD11,022.00
Each
units
Sentron 3VA 3 20A - 36 kA 690V 500V - 76.2mm 130mm 88mm Instantaneous MCCB
RS Stock No. 628-8048
Mfr. Part No.259140 & PN1-63
BrandEaton
TWD6,218.00
1 Box of 1
Box(es)
- PN1 3 63A - 80 kA 690V - - 90mm 145mm 84.5mm - -
RS Stock No. 454-8118
Mfr. Part No.259083 & NZMN1-A63
BrandEaton
TWD12,172.00
Each
units
XEnergy NZM1 3 63A - 50 kA 690V 500V - 90mm 145mm 84.5mm - -
RS Stock No. 628-8060
Mfr. Part No.259141 & PN1-100
BrandEaton
TWD7,403.00
1 Box of 1
Box(es)
- PN1 3 100A - 80 kA 690V - - 90mm 145mm 84.5mm - -
RS Stock No. 628-8032
Mfr. Part No.259092 & NZMN2-A160
BrandEaton
TWD17,533.00
1 Box of 1
Box(es)
XEnergy NZM2 3 160A - 50 kA 690V 750V - 105mm 184mm 149mm - -
RS Stock No. 874-4240
Mfr. Part No.3VA1125-3ED36-0AA0
BrandSiemens
TWD10,701.00
Each
units
Sentron 3VA 3 25A - 25 kA 690V 500V - 76.2mm 130mm 88mm Instantaneous MCCB
RS Stock No. 849-4087
Mfr. Part No.LV429686
TWD15,948.00
Each
units
NSX Range LV4 4 100A - 100 kA 690V - - 161mm 140mm 86mm - -
RS Stock No. 874-4278
Mfr. Part No.3VA1196-3ED36-0AA0
BrandSiemens
TWD10,701.00
Each
units
Sentron 3VA 3 16A - 25 kA 690V 500V - 76.2mm 130mm 88mm Instantaneous MCCB
New
RS Stock No. 209-6895
Mfr. Part No.3VA2040-5HL46-0AA0
BrandSiemens
TWD27,734.00
Each
units
SENTRON 3VA2 4 40A - - - - - - - - - -
New
RS Stock No. 209-6896
Mfr. Part No.3VA2040-5HN36-0AA0
BrandSiemens
TWD23,023.00
Each
units
SENTRON 3VA2 3 40A - - - - - - - - - -
New
RS Stock No. 209-6905
Mfr. Part No.3VA2063-6KP42-0AA0
BrandSiemens
TWD55,847.00
Each
units
SENTRON 3VA2 4 63A - - - - - - - - - -
New
RS Stock No. 209-6897
Mfr. Part No.3VA2040-6HL42-0AA0
BrandSiemens
TWD29,443.00
Each
units
SENTRON 3VA2 4 40A - - - - - - - - - -
New
RS Stock No. 209-6906
Mfr. Part No.3VA2110-5HM32-0AA0
BrandSiemens
TWD32,444.00
Each
units
SENTRON 3VA2 3 100A - - - - - - - - - -
RS Stock No. 179-9728
Mfr. Part No.EZD100M3020N
TWD1,836.00
Each
units
EZD EZD100M 3 20A - 10 kA 500V - - 75mm 130mm 60mm Instantaneous MCCB