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 178-7925
製造零件編號LV426713
HK$9,530.11
單位
Compact NSXm 3 160 A 20 kA 690 V - Screw 108mm 144mm 80mm Distribution, Protection Time Delay ELCB
RS庫存編號 179-9728
製造零件編號EZD100M3020N
HK$392.42
單位
EZD EZD100M 3 20 A 10 kA 500 V - Fixed Mount 75mm 130mm 60mm Distribution Instantaneous MCCB
RS庫存編號 849-4204
製造零件編號LV429860
HK$3,621.89
單位
NSX Range LV4 4P 100 A 90 kA 690 V - Fixed 161mm 140mm 86mm - - -
RS庫存編號 874-4275
製造零件編號3VA1163-4EF36-0AA0
BrandSiemens
HK$3,037.84
單位
Sentron 3VA 3P 63 A 36 kA 690 V 500V Fixed 76.2mm 130mm 88mm General Purpose, Residential Instantaneous MCCB
RS庫存編號 874-4152
製造零件編號3VA1110-3EE36-0AA0
BrandSiemens
HK$3,271.52
單位
Sentron 3VA 3 100 A 25 kA 690 V 500V Fixed 76.2mm 130mm 88mm General Purpose, Residential Instantaneous MCCB
RS庫存編號 178-7996
製造零件編號LV426796
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 178-7757
製造零件編號LV426473
HK$3,608.33
單位
Compact NSXm 4 40 A 10 kA 690 V - Screw 108mm 137mm 80mm Distribution, Protection Time Delay MCCB
RS庫存編號 178-8249
製造零件編號LV426414
HK$3,363.79
單位
Compact NSXm 4P 50 A 10 kA 690 V - DIN Rail Mount, Fixed Mount 108mm 80mm 137mm Distribution Protection Time Delay MCCB
RS庫存編號 178-8236
製造零件編號LV426401
HK$2,895.35
單位
Compact NSXm 3P 25 A 10 kA 690 V - DIN Rail Mount, Fixed Mount 81mm 80mm 137mm Distribution Protection Time Delay MCCB
RS庫存編號 178-8103
製造零件編號LV426168
HK$4,494.26
單位
Compact NSXm 4P 125 A 10 kA 690 V - DIN Rail Mount, Fixed Mount 108mm 80mm 137mm Distribution Protection Time Delay MCCB
RS庫存編號 179-9789
製造零件編號EZD100M3025MAN
HK$418.10
單位
EZD EZD100M 3 25 A 10 kA 500 V - Fixed Mount 75mm 130mm 60mm Motor Protection Instantaneous MCCB
RS庫存編號 178-8225
製造零件編號LV426370
HK$3,350.87
單位
Compact NSXm 4P 16 A 10 kA 690 V - DIN Rail Mount, Fixed Mount 108mm 80mm 137mm Distribution Protection Time Delay MCCB
RS庫存編號 178-7789
製造零件編號LV426522
HK$3,973.20
單位
Compact NSXm 4 32 A 10 kA 690 V - Screw 108mm 137mm 80mm Distribution, Protection Time Delay MCCB
RS庫存編號 178-7748
製造零件編號LV426464
HK$3,363.79
單位
Compact NSXm 4 50 A 10 kA 690 V - Screw 108mm 137mm 80mm Distribution, Protection Time Delay MCCB
RS庫存編號 178-7834
製造零件編號LV426610
HK$2,466.38
單位
Compact NSXm 4 50 A - 690 V - Screw 108mm 137mm 80mm Distribution - -
RS庫存編號 178-7868
製造零件編號LV426861
HK$752.76
單位
- - - - - 24 V 24V Clip-On 8mm - - - - -
RS庫存編號 179-9762
製造零件編號EZD160E4160N
HK$1,093.30
單位
EZD EZD160E 4 160 A 8 kA 500 V - Fixed Mount 140mm 165mm 68mm Distribution Instantaneous MCCB
RS庫存編號 178-7880
製造零件編號LV426930
HK$771.51
單位
- - - - - - - Fixed Mount - - - - - -
RS庫存編號 849-4620
製造零件編號LV432976
HK$20,240.51
單位
NSX Range LV4 3P - 85 kA - - - 255mm 140mm 110mm - - -
RS庫存編號 178-8188
製造零件編號LV426313
HK$3,106.58
單位
Compact NSXm 4P 40 A 10 kA 690 V - DIN Rail Mount, Fixed Mount 108mm 80mm 137mm Distribution Protection Time Delay MCCB