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 874-4281
製造零件編號3VA1163-3EF36-0AA0
BrandSiemens
HK$1,690.86
單位
Sentron 3VA 3P 63 A 25 kA 690 V 500V Fixed 76.2mm 130mm 88mm General Purpose, Residential Instantaneous MCCB
RS庫存編號 178-8104
製造零件編號LV426169
HK$5,233.07
單位
Compact NSXm 4P 163 A 16 kA 690 V - DIN Rail Mount, Fixed Mount 108mm 80mm 137mm Distribution Protection Time Delay MCCB
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 874-4155
製造零件編號3VA1110-3EF36-0AA0
BrandSiemens
HK$2,433.57
單位
Sentron 3VA 3P 100 A 25 kA 690 V 500V Fixed 76.2mm 130mm 88mm General Purpose, Residential Instantaneous MCCB
RS庫存編號 849-4309
製造零件編號LV430683
HK$5,174.78
單位
NSX Range LV4 4P 160 A 100 kA 690 V - Fixed 161mm 140mm 86mm - - -
RS庫存編號 178-7967
製造零件編號LV426762
HK$7,815.93
單位
Compact NSXm 3 100 A 25 kA 690 V - Screw 108mm 144mm 80mm Distribution, Protection Time Delay ELCB
RS庫存編號 849-4282
製造零件編號LV430670
HK$4,661.50
單位
NSX Range LV4 3P 160 A 100 kA 690 V - Fixed 161mm 105mm 86mm - - -
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 874-4206
製造零件編號3VA1116-3EF36-0AA0
BrandSiemens
HK$4,373.80
單位
Sentron 3VA 3P 160 A 25 kA 690 V 500V Fixed 76.2mm 130mm 88mm General Purpose, Residential Instantaneous MCCB
RS庫存編號 849-4469
製造零件編號LV431673
HK$4,704.77
單位
NSX Range LV4 3P 250 A 85 kA 690 V - Fixed 161mm 105mm 86mm - - -
RS庫存編號 849-4380
製造零件編號LV430853
HK$4,588.67
單位
NSX Range LV4 4P 160 A 90 kA 690 V - Fixed 161mm 140mm 86mm - - -
RS庫存編號 178-8192
製造零件編號LV426317
HK$3,686.30
單位
Compact NSXm 4P 100 A 36 kA 690 V - DIN Rail Mount, Fixed Mount 108mm 80mm 137mm Distribution Protection Time Delay MCCB
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 36 kA 690 V - DIN Rail Mount, Fixed Mount 108mm 80mm 137mm Distribution Protection Time Delay MCCB
RS庫存編號 178-7747
製造零件編號LV426463
HK$3,363.79
單位
Compact NSXm 4 40 A 50 kA 690 V - Screw 108mm 137mm 80mm Distribution, Protection Time Delay MCCB
RS庫存編號 849-4627
製造零件編號LV432949
HK$17,918.34
單位
NSX Range LV4 3P - 85 kA - - - 255mm 140mm 110mm - - -
RS庫存編號 849-4416
製造零件編號LV431632
HK$4,380.54
單位
NSX Range LV4 3P 250 A 85 kA 690 V - Fixed 161mm 105mm 86mm - - -
RS庫存編號 849-4236
製造零件編號LV430622
HK$3,027.71
單位
NSX Range LV4 3P 160 A 85 kA 690 V - Fixed 161mm 105mm 86mm - - -
RS庫存編號 179-9794
製造零件編號EZD100M3100MAN
HK$522.63
單位
EZD EZD100M 3 100 A 10 kA 500 V - Fixed Mount 75mm 130mm 60mm Motor Protection Instantaneous 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 849-4517
製造零件編號LV431792
HK$6,097.66
單位
NSX Range LV4 3P 250 A 85 kA 690 V - Fixed 161mm 105mm 86mm - - -