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.

...
Read more Read less

Filters

Viewing 81 - 100 of 1733 products
Results per page
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. 178-8193
Mfr. Part No.LV426318
HK$5,742.39
Each
units
Compact NSXm 4 125A 36 kA 690V - - 108mm 80mm 137mm Time Delay MCCB 4.5mm
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. 210-1713
Mfr. Part No.3VA2110-5HN46-0AA0
BrandSiemens
HK$9,776.08
Each
units
SENTRON 3VA2 4 100A - - - - - - - - - -
New
RS Stock No. 209-4917
Mfr. Part No.3VA1116-4ED32-0AA0
BrandSiemens
HK$5,881.98
Each
units
Sentron 3VA 3 160A - - - Fixed - - - - - -
New
RS Stock No. 209-4841
Mfr. Part No.3VA1025-4ED32-0AA0
BrandSiemens
HK$2,379.12
Each
units
Sentron 3VA 3 25A - - - Fixed - - - - - -
RS Stock No. 178-7793
Mfr. Part No.LV426525
HK$2,671.67
Each
units
Compact NSXm 4 63A 70 kA 690V - - 108mm 137mm 80mm Time Delay MCCB -
New
RS Stock No. 209-5255
Mfr. Part No.3VA2510-6HN42-0AA0
BrandSiemens
HK$57,706.19
Each
units
Sentron 3VA 4 1kA - - - Fixed - - - - - -
New
RS Stock No. 209-6979
Mfr. Part No.3VA1116-6EE42-0AA0
BrandSiemens
HK$9,958.71
Each
units
Sentron 3VA1 4 160A - - - - - - - - - -
New
RS Stock No. 209-6917
Mfr. Part No.3VA2125-5HL42-0AA0
BrandSiemens
HK$7,767.15
Each
units
SENTRON 3VA2 4 25A - - - - - - - - - -
New
RS Stock No. 209-6947
Mfr. Part No.3VA2463-6HN32-0AA0
BrandSiemens
HK$28,898.51
Each
units
SENTRON 3VA2 3 630A - - - - - - - - - -
RS Stock No. 537-5573
Mfr. Part No.259123 & NZMN2-VE160
BrandEaton
HK$5,288.58
Each
units
XEnergy NZM2 3 160A 50 kA 690V 750V - 105mm 184mm 149mm - - -
New
RS Stock No. 211-5978
Mfr. Part No.3VA1110-6EE46-0AA0
BrandSiemens
HK$5,500.39
Each
units
0AA0 3VA11 4 100A - - - Fixed - - - - - -
New
RS Stock No. 210-1681
Mfr. Part No.3VA1180-6EE42-0AA0
BrandSiemens
HK$4,683.92
Each
units
SENTRON 3VA1 4 80A - - - - - - - - - -
New
RS Stock No. 209-5209
Mfr. Part No.3VA2340-5HN32-0AA0
BrandSiemens
HK$18,121.77
Each
units
Sentron 3VA 3 400A - - - Fixed - - - - - -
New
RS Stock No. 209-6998
Mfr. Part No.3VA1150-4EF32-0AA0
BrandSiemens
HK$3,308.83
Each
units
Sentron 3VA1 3 50A - - - - - - - - - -
RS Stock No. 874-4301
Mfr. Part No.3VA1150-3EE36-0AA0
BrandSiemens
HK$3,018.77
Each
units
Sentron 3VA 3 50A 25 kA 690V 500V - 76.2mm 130mm 88mm Instantaneous MCCB 4.2mm
New
RS Stock No. 209-6991
Mfr. Part No.3VA1132-5EE46-0AA0
BrandSiemens
HK$4,447.58
Each
units
Sentron 3VA1 4 32A - - - - - - - - - -
New
RS Stock No. 209-4861
Mfr. Part No.3VA1110-5EE32-0AA0
BrandSiemens
HK$3,563.61
Each
units
Sentron 3VA 3 100A - - - Fixed - - - - - -
RS Stock No. 178-8246
Mfr. Part No.LV426411
HK$3,791.92
Each
units
Compact NSXm 4 25A 50 kA 690V - - 108mm 80mm 137mm Time Delay MCCB 4.5mm
RS Stock No. 179-9754
Mfr. Part No.EZD630M3630K
HK$5,064.33
Each
units
EZD EZD630M 3 630A 50 kA 440V - - 140mm 255mm 110mm Instantaneous MCCB -