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 178-7935
製造零件編號LV426726
HK$10,330.37
單位
Compact NSXm 4 50 A 36 kA 690 V - Screw 108mm 144mm 80mm Distribution, Protection Time Delay ELCB
RS庫存編號 178-8089
製造零件編號LV426154
HK$2,264.45
單位
Compact NSXm 3 50 A 16 kA 690 V - DIN Rail Mount, Fixed Mount 81mm 80mm 137mm Distribution Protection Time Delay MCCB
RS庫存編號 178-8134
製造零件編號LV426219
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 179-9828
製造零件編號LV510443
HK$681.15
單位
Easypact CVS100 → 250 Easypact CVS 3 100 A 36 kA 440 V - Fixed Mount 105mm 161mm 86mm Motor Instantaneous MCCB
RS庫存編號 874-4262
製造零件編號3VA1132-3EF36-0AA0
BrandSiemens
HK$1,965.85
單位
Sentron 3VA 3 32 A 25 kA 690 V 500V Fixed 76.2mm 130mm 88mm General Purpose, Residential Instantaneous MCCB
RS庫存編號 849-4292
製造零件編號LV430680
HK$7,172.88
單位
NSX Range LV4 4 160 A 100 kA 690 V - Fixed 161mm 140mm 86mm - - -
RS庫存編號 178-8235
製造零件編號LV426400
HK$2,895.35
單位
Compact NSXm 3 16 A 50 kA 690 V - DIN Rail Mount, Fixed Mount 81mm 80mm 137mm Distribution Protection Time Delay MCCB
RS庫存編號 178-7745
製造零件編號LV426461
HK$3,363.79
單位
Compact NSXm 4 25 A 50 kA 690 V - Screw 108mm 137mm 80mm Distribution, Protection Time Delay MCCB
RS庫存編號 874-4212
製造零件編號3VA1116-4EF36-0AA0
BrandSiemens
HK$6,939.28
單位
Sentron 3VA 3 160 A 36 kA 690 V 500V Fixed 76.2mm 130mm 88mm General Purpose, Residential Instantaneous MCCB
RS庫存編號 178-8148
製造零件編號LV426253
HK$2,408.93
單位
Compact NSXm 3 40 A 25 kA 690 V - DIN Rail Mount, Fixed Mount 81mm 80mm 137mm Distribution Protection Time Delay MCCB
RS庫存編號 178-7995
製造零件編號LV426795
HK$10,293.78
單位
Compact NSXm 4 25 A 70 kA 690 V - Screw 108mm 144mm 80mm Distribution, Protection Time Delay ELCB
RS庫存編號 178-7814
製造零件編號LV426565
HK$3,728.79
單位
Compact NSXm 4 63 A 70 kA 690 V - Screw 108mm 137mm 80mm Distribution, Protection Time Delay MCCB
RS庫存編號 537-5618
製造零件編號NZMH2-VE250
BrandEaton
HK$8,246.52
單位
XEnergy NZM2 3P 250 A 150 kA 690 V 750V Fixed 105mm 184mm 149mm - - -
RS庫存編號 179-9826
製造零件編號LV510346
HK$832.30
單位
Easypact CVS100 → 250 Easypact CVS 4 100 A 36 kA 440 V - Fixed Mount 140mm 161mm 86mm Distribution Instantaneous MCCB
RS庫存編號 849-4526
製造零件編號LV431800
HK$12,481.04
單位
NSX Range LV4 4 250 A 85 kA 690 V - Fixed 161mm 140mm 86mm - - -
RS庫存編號 178-8248
製造零件編號LV426413
HK$3,363.79
單位
Compact NSXm 4 40 A 50 kA 690 V - DIN Rail Mount, Fixed Mount 108mm 80mm 137mm Distribution Protection Time Delay MCCB
RS庫存編號 179-9842
製造零件編號LV510487
HK$906.10
單位
Easypact CVS100 → 250 Easypact CVS 4 100 A 40 kA 440 V - Fixed Mount 140mm 161mm 86mm Distribution Instantaneous MCCB
RS庫存編號 849-4172
製造零件編號LV429846
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 178-8176
製造零件編號LV426301
HK$2,654.08
單位
Compact NSXm 3 25 A 36 kA 690 V - DIN Rail Mount, Fixed Mount 81mm 80mm 137mm Distribution Protection Time Delay MCCB
RS庫存編號 179-9734
製造零件編號EZD100M3080N
HK$462.65
單位
EZD EZD100M 3 80 A 10 kA 500 V - Fixed Mount 75mm 130mm 60mm Distribution Instantaneous MCCB