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 Rated AC Voltage Rated DC Voltage Mounting Style Length Width Depth Application Break Time Circuit Breaker Type
RS庫存編號 454-8118
製造零件編號NZMN1-A63
BrandEaton
HK$2,384.82
單位
XEnergy NZM1 3P 63 A 50 kA 690 V 500V Fixed 90mm 145mm 84.5mm - - -
RS庫存編號 179-9823
製造零件編號LV510336
HK$628.85
單位
Easypact CVS100 → 250 Easypact CVS 3 100 A 36 kA 440 V - Fixed Mount 105mm 161mm 86mm Distribution Instantaneous MCCB
RS庫存編號 849-4030
製造零件編號LV429657
HK$2,866.18
單位
NSX Range LV4 4P 100 A 85 kA 690 V - Fixed 161mm 140mm 86mm - - -
RS庫存編號 178-7989
製造零件編號LV426788
HK$12,789.73
單位
Compact NSXm 4 160 A 50 kA 690 V - Screw 108mm 144mm 80mm Distribution, Protection Time Delay ELCB
RS庫存編號 178-8099
製造零件編號LV426164
HK$2,740.01
單位
Compact NSXm 4P 50 A 8 kA 690 V - DIN Rail Mount, Fixed Mount 108mm 80mm 137mm Distribution Protection Time Delay MCCB
RS庫存編號 178-8090
製造零件編號LV426155
HK$2,264.45
單位
Compact NSXm 3P 63 A 8 kA 690 V - DIN Rail Mount, Fixed Mount 81mm 80mm 137mm Distribution Protection Time Delay MCCB
RS庫存編號 179-9832
製造零件編號LV510454
HK$637.30
單位
Easypact CVS100 → 250 Easypact CVS 3 100 A 40 kA 440 V - Fixed Mount 140mm 161mm 86mm Motor Instantaneous MCCB
RS庫存編號 178-8214
製造零件編號LV426359
HK$4,520.82
單位
Compact NSXm 3P 160 A 35 kA 690 V - DIN Rail Mount, Fixed Mount 81mm 80mm 137mm Distribution Protection Time Delay MCCB
RS庫存編號 849-4034
製造零件編號LV429670
HK$2,801.92
單位
NSX Range LV4 3P 100 A 100 kA 690 V - Fixed 161mm 105mm 86mm - - -
RS庫存編號 178-7921
製造零件編號LV426710
HK$7,753.89
單位
Compact NSXm 3 25 A 20 kA 690 V - Screw 108mm 144mm 80mm Distribution, Protection Time Delay ELCB
RS庫存編號 178-8152
製造零件編號LV426257
HK$2,472.06
單位
Compact NSXm 3P 100 A 20 kA 690 V - DIN Rail Mount, Fixed Mount 81mm 80mm 137mm Distribution Protection Time Delay MCCB
RS庫存編號 178-7953
製造零件編號LV426746
HK$10,293.78
單位
Compact NSXm 4 50 A 65 kA 690 V - Screw 108mm 144mm 80mm Distribution, Protection Time Delay ELCB
RS庫存編號 178-7913
製造零件編號LV426701
HK$7,614.36
單位
Compact NSXm 3 50 A 10 kA 690 V - Screw 108mm 144mm 80mm Distribution, Protection Time Delay ELCB
RS庫存編號 849-3961
製造零件編號LV429631
HK$2,249.34
單位
NSX Range LV4 3P 100 A 85 kA 690 V - Fixed 161mm 105mm 86mm - - -
RS庫存編號 178-7884
製造零件編號LV426934
HK$1,461.04
單位
- - - - - - - Fixed Mount - - - - - -
RS庫存編號 454-8124
製造零件編號NZMN1-A80
BrandEaton
HK$2,435.49
單位
XEnergy NZM1 3P 80 A 50 kA 690 V 500V Fixed 90mm 145mm 84.5mm - - -
RS庫存編號 178-8197
製造零件編號LV426322
HK$3,350.87
單位
Compact NSXm 4P 32 A 10 kA 690 V - DIN Rail Mount, Fixed Mount 108mm 80mm 137mm Distribution Protection Time Delay MCCB
RS庫存編號 178-7826
製造零件編號LV426575
HK$3,973.20
單位
Compact NSXm 4 63 A 10 kA 690 V - Screw 108mm 137mm 80mm Distribution, Protection Time Delay MCCB
RS庫存編號 178-8105
製造零件編號LV426170
HK$2,956.43
單位
Compact NSXm 4P 16 A 8 kA 690 V - DIN Rail Mount, Fixed Mount 108mm 80mm 137mm Distribution Protection Time Delay MCCB
RS庫存編號 849-4396
製造零件編號LV430862
HK$4,837.25
單位
NSX Range LV4 4P 160 A 90 kA 690 V - Fixed 161mm 140mm 86mm - - -