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. 628-8082
Mfr. Part No.259142 & PN1-125
BrandEaton
MYR1,715.21
1 Box of 1
Box(es)
- PN1 3 125A 80 kA 690V - - 90mm 145mm 84.5mm - - -
RS Stock No. 849-4282
Mfr. Part No.LV430670
MYR3,508.14
Each
units
NSX Range LV4 3 160A 100 kA 690V - - 161mm 105mm 86mm - - -
RS Stock No. 537-5545
Mfr. Part No.259093 & NZMN2-A200
BrandEaton
MYR3,745.08
Each
units
xEnergy NZM2 3 200A 50 kA 690V 750V - 105mm 184mm 149mm - - -
RS Stock No. 537-5551
Mfr. Part No.259094 & NZMN2-A250
BrandEaton
MYR4,565.40
Each
units
xEnergy NZM2 3 250A 50 kA 690V 750V - 105mm 184mm 149mm - - -
RS Stock No. 454-8039
Mfr. Part No.259075 & NZMB1-A40
BrandEaton
MYR1,163.32
Each
units
xEnergy NZM1 3 40A 25 kA 440V - - 90mm 145mm 84.5mm - - -
RS Stock No. 849-3986
Mfr. Part No.LV429640
MYR2,485.33
Each
units
NSX Range LV4 4 100A 85 kA 690V - - 161mm 140mm 86mm - - -
RS Stock No. 538-3833
Mfr. Part No.2CDE283001R0100 E203/100R
BrandABB
MYR407.81
Each
units
Pro M S2CU 3 100A - 230 V, 400V - DIN Rail 52.5mm 68mm 90mm - - -
RS Stock No. 849-4576
Mfr. Part No.LV431871
MYR4,555.54
Each
units
NSX Range LV4 3 250A 90 kA 690V - - 161mm 105mm 86mm - - -
RS Stock No. 454-8095
Mfr. Part No.259081 & NZMN1-A40
BrandEaton
MYR2,138.21
Each
units
xEnergy NZM1 3 40A 50 kA 690V 500V - 90mm 145mm 84.5mm - - -
RS Stock No. 628-8004
Mfr. Part No.265723 & NZMN2-M125
BrandEaton
MYR2,703.87
1 Box of 1
Box(es)
xEnergy NZM2 3 125A 50 kA 690V 750V - 105mm 184mm 149mm - - -
RS Stock No. 874-4402
Mfr. Part No.3VA2225-5HL32-0AA0
BrandSiemens
MYR7,189.11
Each
units
Sentron 3VA 3 250A 55 kA 690V - - 105mm 181mm 107mm Instantaneous MCCB 4.5mm
RS Stock No. 517-4819
Mfr. Part No.MGP0631L1
MYR1,024.45
Each
units
- - - - - - - - - - - - - -
RS Stock No. 537-5618
Mfr. Part No.259127 & NZMH2-VE250
BrandEaton
MYR6,040.22
Each
units
xEnergy NZM2 3 250A 150 kA 690V 750V - 105mm 184mm 149mm - - -
RS Stock No. 454-8124
Mfr. Part No.259084 & NZMN1-A80
BrandEaton
MYR2,270.71
Each
units
xEnergy NZM1 3 80A 50 kA 690V 500V - 90mm 145mm 84.5mm - - -
RS Stock No. 849-4497
Mfr. Part No.LV431770
MYR5,148.56
Each
units
NSX Range LV4 3 250A 85 kA 690V - - 161mm 105mm 86mm - - -
RS Stock No. 628-8076
Mfr. Part No.266005 & PN2-160
BrandEaton
MYR1,927.58
1 Box of 1
Box(es)
- PN2 3 160A 80 kA 690V - - 105mm 184mm 149mm - - -
RS Stock No. 454-8146
Mfr. Part No.259086 & NZMN1-A125
BrandEaton
MYR2,427.94
Each
units
xEnergy NZM1 3 125A 50 kA 690V 750V - 90mm 145mm 84.5mm - - -
RS Stock No. 849-4012
Mfr. Part No.LV429652
MYR2,303.19
Each
units
NSX Range LV4 4 100A 85 kA 690V - - 161mm 140mm 86mm - - -
RS Stock No. 874-4137
Mfr. Part No.3VA1110-4ED36-0AA0
BrandSiemens
MYR2,150.48
Each
units
Sentron 3VA 3 100A 25 kA, 36 kA 690V 500V - 76.2mm 130mm 88mm Instantaneous MCCB 4.2mm
RS Stock No. 849-4532
Mfr. Part No.LV431830
MYR4,700.05
Each
units
NSX Range LV4 3 250A 90 kA 690V - - 161mm 105mm 86mm - - -