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
New
RS Stock No. 209-6964
Mfr. Part No.3VA1110-4EE42-0AA0
BrandSiemens
HK$4,414.02
Each
units
Sentron 3VA1 4 100A - - - - - - - - - -
RS Stock No. 178-7957
Mfr. Part No.LV426751
HK$7,614.36
Each
units
Compact NSXm 3 50A - 16 kA 690V - - 108mm 144mm 80mm Time Delay -
New
RS Stock No. 209-7081
Mfr. Part No.3VA2510-5HN32-0AA0
BrandSiemens
HK$40,900.53
Each
units
Sentron 3VA2 3 1kA - - - - - - - - - -
RS Stock No. 178-7949
Mfr. Part No.LV426742
HK$8,590.34
Each
units
Compact NSXm 3 100A - 70 kA 690V - - 108mm 144mm 80mm Time Delay -
RS Stock No. 178-8142
Mfr. Part No.LV426227
HK$3,742.18
Each
units
Compact NSXm 4 100A - 20 kA 690V - - 108mm 80mm 137mm Time Delay MCCB
RS Stock No. 874-4250
Mfr. Part No.3VA1132-3ED36-0AA0
BrandSiemens
HK$1,715.20
Each
units
Sentron 3VA 3 32A - 25 kA 690V 500V - 76.2mm 130mm 88mm Instantaneous MCCB
New
RS Stock No. 209-6763
Mfr. Part No.3VA1116-5EE46-0AA0
BrandSiemens
HK$9,091.26
Each
units
SENTRON 3VA1 4 160A - - - - - - - - - -
New
RS Stock No. 209-7037
Mfr. Part No.3VA2010-6HL36-0AA0
BrandSiemens
HK$6,600.78
Each
units
Sentron 3VA2 3 100A - - - - - - - - - -
New
RS Stock No. 209-6997
Mfr. Part No.3VA1150-4EE42-0AA0
BrandSiemens
HK$3,563.61
Each
units
Sentron 3VA1 4 50A - - - - - - - - - -
New
RS Stock No. 209-6897
Mfr. Part No.3VA2040-6HL42-0AA0
BrandSiemens
HK$7,846.02
Each
units
SENTRON 3VA2 4 40A - - - - - - - - - -
RS Stock No. 849-4548
Mfr. Part No.LV431833
HK$5,060.55
Each
units
NSX Range LV4 3 250A - 90 kA 690V - - 161mm 105mm 86mm - -
RS Stock No. 179-9843
Mfr. Part No.LV510546
HK$1,734.49
Each
units
Easypact CVS100 → 250 Easypact CVS 4 100A - 40 kA 240V - - 140mm 236mm 86mm Instantaneous MCCB
New
RS Stock No. 209-7028
Mfr. Part No.3VA1216-5EF32-0AA0
BrandSiemens
HK$8,382.58
Each
units
Sentron 3VA1 3 160A - - - - - - - - - -
New
RS Stock No. 210-1744
Mfr. Part No.3VA2463-5HN42-0AA0
BrandSiemens
HK$32,193.98
Each
units
SENTRON 3VA2 4 630A - - - - - - - - - -
RS Stock No. 849-4208
Mfr. Part No.LV429861
HK$4,499.52
Each
units
NSX Range LV4 4 100A - 90 kA 690V - - 161mm 140mm 86mm - -
RS Stock No. 849-4627
Mfr. Part No.LV432949
HK$20,971.56
Each
units
NSX Range LV4 3P - 85 kA - - - - 255mm 140mm 110mm - -
RS Stock No. 178-7903
Mfr. Part No.LV426971
HK$351.48
Each
units
- - - - - - - - - - - - - -
New
RS Stock No. 209-6739
Mfr. Part No.3VA1032-3ED32-0AA0
BrandSiemens
HK$2,288.00
Each
units
SENTRON 3VA1 3 32A - - - - - - - - - -
RS Stock No. 628-8032
Mfr. Part No.259092 & NZMN2-A160
BrandEaton
HK$4,289.08
1 Box of 1
Box(es)
XEnergy NZM2 3 160A - 50 kA 690V 750V - 105mm 184mm 149mm - -
New
RS Stock No. 210-1685
Mfr. Part No.3VA1196-5EE32-0AA0
BrandSiemens
HK$2,854.94
Each
units
SENTRON 3VA1 3 16A - - - - - - - - - -
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