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 849-4166
製造零件編號LV429843
HK$3,134.56
單位
NSX Range LV4 3 100 A 90 kA 690 V - Fixed 161mm 105mm 86mm - - -
RS庫存編號 849-4321
製造零件編號LV430771
HK$5,491.20
單位
NSX Range LV4 3 160 A 85 kA 690 V - Fixed 161mm 105mm 86mm - - -
RS庫存編號 849-4368
製造零件編號LV430841
HK$4,255.68
單位
NSX Range LV4 3 160 A 90 kA 690 V - Fixed 161mm 105mm 86mm - - -
RS庫存編號 874-4275
製造零件編號3VA1163-4EF36-0AA0
BrandSiemens
HK$2,096.95
單位
Sentron 3VA 3 63 A 36 kA 690 V 500V Fixed 76.2mm 130mm 88mm General Purpose, Residential Instantaneous MCCB
RS庫存編號 454-8118
製造零件編號NZMN1-A63
BrandEaton
HK$2,977.72
單位
XEnergy NZM1 3P 63 A 50 kA 690 V 500V Fixed 90mm 145mm 84.5mm - - -
RS庫存編號 849-4396
製造零件編號LV430862
HK$5,971.68
單位
NSX Range LV4 4 160 A 90 kA 690 V - Fixed 161mm 140mm 86mm - - -
RS庫存編號 178-7945
製造零件編號LV426737
HK$10,545.92
單位
Compact NSXm 4 100 A 50 kA 690 V - Screw 108mm 144mm 80mm Distribution, Protection Time Delay ELCB
RS庫存編號 178-8090
製造零件編號LV426155
HK$2,356.33
單位
Compact NSXm 3 63 A 16 kA 690 V - DIN Rail Mount, Fixed Mount 81mm 80mm 137mm Distribution Protection Time Delay MCCB
RS庫存編號 849-4434
製造零件編號LV431643
HK$6,806.80
單位
NSX Range LV4 4 250 A - - - - - - - - - -
RS庫存編號 874-4354
製造零件編號3VA1180-4EE36-0AA0
BrandSiemens
HK$1,972.94
單位
Sentron 3VA 3 80 A 36 kA 690 V 500V Fixed 76.2mm 130mm 88mm General Purpose, Residential Instantaneous MCCB
RS庫存編號 178-8070
製造零件編號LV426115
HK$2,850.59
單位
Compact NSXm 4 63 A 16 kA 690 V - DIN Rail Mount, Fixed Mount 108mm 80mm 137mm Distribution Protection Time Delay MCCB
RS庫存編號 179-9753
製造零件編號EZD630E3630K
HK$4,207.60
單位
EZD EZD630E 3 630 A 36 kA 440 V - Fixed Mount 140mm 255mm 110mm Distribution Instantaneous MCCB
RS庫存編號 849-4481
製造零件編號LV431691
HK$9,895.60
單位
NSX Range LV4 4 250 A 85 kA 690 V - Fixed 161mm 140mm 86mm - - -
RS庫存編號 178-8164
製造零件編號LV426269
HK$5,567.05
單位
Compact NSXm 4 160 A 25 kA 690 V - DIN Rail Mount, Fixed Mount 108mm 80mm 137mm Distribution Protection Time Delay MCCB
RS庫存編號 178-7866
製造零件編號LV426844
HK$816.10
單位
- - - - - 208 → 240 V, 220 → 240 V, 277 V 250V Clip-On 8mm - - - - -
RS庫存編號 849-4352
製造零件編號LV430800
HK$9,163.44
單位
NSX Range LV4 4 160 A 100 kA 690 V - Fixed 161mm 140mm 86mm - - -
RS庫存編號 178-8217
製造零件編號LV426362
HK$3,106.58
單位
Compact NSXm 4 32 A 36 kA 690 V - DIN Rail Mount, Fixed Mount 108mm 80mm 137mm Distribution Protection Time Delay MCCB
RS庫存編號 849-4169
製造零件編號LV429844
HK$3,134.56
單位
NSX Range LV4 3 100 A 90 kA 690 V - Fixed 161mm 105mm 86mm - - -
RS庫存編號 178-8142
製造零件編號LV426227
HK$3,742.18
單位
Compact NSXm 4 100 A 20 kA 690 V - DIN Rail Mount, Fixed Mount 108mm 80mm 137mm Distribution Protection Time Delay MCCB
RS庫存編號 179-9849
製造零件編號LV510836
HK$491.61
單位
Easypact CVS-CVS100E Easypact CVS 3 30 A 20 kA 440 V - Fixed Mount 75mm 130mm 60mm Distribution Time Delay MCCB