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. 178-8226
Mfr. Part No.LV426371
HK$2,254.92
Each
units
Compact NSXm 4 25A 36 kA 690V - - 108mm 80mm 137mm Time Delay MCCB 4.5mm
New
RS Stock No. 209-5241
Mfr. Part No.3VA2463-6HL32-0AA0
BrandSiemens
HK$24,094.87
Each
units
Sentron 3VA 3 630A - - - Fixed - - - - - -
New
RS Stock No. 211-3731
Mfr. Part No.3VA1132-3EE32-0AA0
BrandSiemens
HK$2,739.45
Each
units
SENTRON 3VA1 3 32A - - - Fixed - - - - - -
New
RS Stock No. 209-6986
Mfr. Part No.3VA1132-3ED32-0AA0
BrandSiemens
HK$2,632.02
Each
units
Sentron 3VA1 3 32A - - - - - - - - - -
RS Stock No. 849-4507
Mfr. Part No.LV431781
HK$10,079.48
Each
units
NSX Range LV4 4 250A 85 kA 690V - - 161mm 140mm 86mm - - -
RS Stock No. 178-7912
Mfr. Part No.LV426700
HK$5,120.06
Each
units
Compact NSXm 3 25A 16 kA 690V - - 108mm 144mm 80mm Time Delay - -
RS Stock No. 178-7998
Mfr. Part No.LV426798
HK$14,650.98
Each
units
Compact NSXm 4 160A 70 kA 690V - - 108mm 144mm 80mm Time Delay - -
RS Stock No. 849-3942
Mfr. Part No.LV429624
HK$2,701.59
Each
units
NSX Range LV4 3 100A 85 kA 690V - - 161mm 105mm 86mm - - -
New
RS Stock No. 210-1705
Mfr. Part No.3VA2040-5KP46-0AA0
BrandSiemens
HK$15,792.12
Each
units
SENTRON 3VA2 4 40A - - - - - - - - - -
New
RS Stock No. 209-4871
Mfr. Part No.3VA1110-6EF46-0AA0
BrandSiemens
HK$5,902.23
Each
units
Sentron 3VA 4 100A - - - Fixed - - - - - -
RS Stock No. 178-7873
Mfr. Part No.LV426905
HK$164.40
Each
units
- - - - - - - - - - - - - -
RS Stock No. 849-4359
Mfr. Part No.LV430840
HK$5,500.10
Each
units
NSX Range LV4 3 160A 90 kA 690V - - 161mm 105mm 86mm - - -
RS Stock No. 179-9831
Mfr. Part No.LV510452
HK$799.57
Each
units
Easypact CVS100 → 250 Easypact CVS 3 100A 40 kA 440V - - 105mm 161mm 86mm Instantaneous MCCB -
New
RS Stock No. 210-3337
Mfr. Part No.3VA1196-5EF42-0AA0
BrandSiemens
HK$4,587.24
Each
units
3VA1 SENTRON 4 - - - - Fixed - - - - - -
New
RS Stock No. 209-6877
Mfr. Part No.3VA1216-6MH32-0AA0
BrandSiemens
HK$8,400.98
Each
units
SENTRON 3VA1 3 160A - - - - - - - - - -
RS Stock No. 178-7970
Mfr. Part No.LV426766
HK$6,377.69
Each
units
Compact NSXm 4 50A 25 kA 690V - - 108mm 144mm 80mm Time Delay - -
New
RS Stock No. 209-5137
Mfr. Part No.3VA2116-6HN46-0AA0
BrandSiemens
HK$14,578.41
Each
units
Sentron 3VA 4 160A - - - Fixed - - - - - -
New
RS Stock No. 209-4843
Mfr. Part No.3VA1040-4ED42-0AA0
BrandSiemens
HK$3,097.91
Each
units
Sentron 3VA 4 40A - - - Fixed - - - - - -
New
RS Stock No. 210-1640
Mfr. Part No.3VA1120-6EF32-0AA0
BrandSiemens
HK$3,749.29
Each
units
SENTRON 3VA1 3 20A - - - - - - - - - -
RS Stock No. 178-8220
Mfr. Part No.LV426365
HK$3,429.69
Each
units
Compact NSXm 4 63A 36 kA 690V - - 108mm 80mm 137mm Time Delay MCCB 4.5mm