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 178-7906
製造零件編號LV426980
HK$276.16
單位
- - 3 - - - - Cable Mount - - - - - -
RS庫存編號 849-4059
製造零件編號LV429675
HK$2,744.83
單位
NSX Range LV4 3P 100 A 100 kA 690 V - Fixed 161mm 105mm 86mm - - -
RS庫存編號 178-7933
製造零件編號LV426723
HK$9,791.79
單位
Compact NSXm 3 160 A 35 kA 690 V - Screw 108mm 144mm 80mm Distribution, Protection Time Delay ELCB
RS庫存編號 178-7988
製造零件編號LV426787
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 849-4374
製造零件編號LV430850
HK$5,335.04
單位
NSX Range LV4 4P 160 A 90 kA 690 V - Fixed 161mm 140mm 86mm - - -
RS庫存編號 178-7857
製造零件編號LV426825
HK$1,214.97
單位
- - - - - 277 V - Clip-On 8mm - - - - -
RS庫存編號 849-4501
製造零件編號LV431782
HK$7,614.08
單位
NSX Range LV4 4P 250 A 85 kA 690 V - Fixed 161mm 140mm 86mm - - -
RS庫存編號 179-9733
製造零件編號EZD100M3060N
HK$388.66
單位
EZD EZD100M 3 60 A 10 kA 500 V - Fixed Mount 75mm 130mm 60mm Distribution Instantaneous MCCB
RS庫存編號 178-7930
製造零件編號LV426720
HK$7,902.35
單位
Compact NSXm 3 25 A 35 kA 690 V - Screw 108mm 144mm 80mm Distribution, Protection Time Delay ELCB
RS庫存編號 178-8172
製造零件編號LV426277
HK$3,742.18
單位
Compact NSXm 4P 100 A 20 kA 690 V - DIN Rail Mount, Fixed Mount 108mm 80mm 137mm Distribution Protection Time Delay MCCB
RS庫存編號 179-9749
製造零件編號EZD400M3320K
HK$3,064.94
單位
EZD EZD400M 3 320 A 50 kA 440 V - Fixed Mount 140mm 255mm 110mm Distribution Instantaneous MCCB
RS庫存編號 849-4359
製造零件編號LV430840
HK$4,202.11
單位
NSX Range LV4 3P 160 A 90 kA 690 V - Fixed 161mm 105mm 86mm - - -
RS庫存編號 849-4456
製造零件編號LV431671
HK$5,614.85
單位
NSX Range LV4 3P 250 A 85 kA 690 V - Fixed 161mm 105mm 86mm - - -
RS庫存編號 849-4201
製造零件編號LV429857
HK$2,877.31
單位
NSX Range LV4 4P 100 A 90 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 4P 160 A 20 kA 690 V - DIN Rail Mount, Fixed Mount 108mm 80mm 137mm Distribution Protection Time Delay MCCB
RS庫存編號 179-9844
製造零件編號LV510571
HK$2,177.31
單位
Easypact CVS100 → 250 Easypact CVS 4 100 A 36 kA 440 V - Fixed Mount 140mm 236mm 86mm Distribution Instantaneous MCCB
RS庫存編號 178-7805
製造零件編號LV426557
HK$3,275.80
單位
Compact NSXm 3 100 A 65 kA 690 V - Screw 81mm 137mm 80mm Distribution, Protection Time Delay MCCB
RS庫存編號 178-7766
製造零件編號LV426501
HK$3,208.93
單位
Compact NSXm 3 25 A 10 kA 690 V - Screw 81mm 137mm 80mm Distribution, Protection Time Delay MCCB
RS庫存編號 517-4819
製造零件編號MGP0631L1
HK$1,171.35
單位
Powerpact4 MGP 1P 63 A 25 kA 230 V - Surface Mount - - - - - -
RS庫存編號 179-9835
製造零件編號LV510471
HK$723.84
單位
Easypact CVS100 → 250 Easypact CVS 3 100 A 40 kA 440 V - Fixed Mount 105mm 161mm 86mm Distribution Instantaneous MCCB