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 628-8048
製造零件編號PN1-63
BrandEaton
HK$1,300.00
毎盒:1 個
Box(es)
- PN1 3P 63 A 80 kA 690 V - Fixed 90mm 145mm 84.5mm - - -
RS庫存編號 179-9760
製造零件編號EZD100E4100N
HK$690.16
單位
EZD EZD100E 4 100 A 10 kA 500 V - Fixed Mount 100mm 130mm 60mm Distribution Instantaneous MCCB
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 178-8247
製造零件編號LV426412
HK$3,363.79
單位
Compact NSXm 4P 32 A 10 kA 690 V - DIN Rail Mount, Fixed Mount 108mm 80mm 137mm Distribution Protection Time Delay MCCB
RS庫存編號 178-8098
製造零件編號LV426163
HK$2,740.01
單位
Compact NSXm 4P 40 A 8 kA 690 V - DIN Rail Mount, Fixed Mount 108mm 80mm 137mm Distribution Protection Time Delay MCCB
RS庫存編號 178-8238
製造零件編號LV426403
HK$2,895.35
單位
Compact NSXm 3P 40 A 10 kA 690 V - DIN Rail Mount, Fixed Mount 81mm 80mm 137mm Distribution Protection Time Delay MCCB
RS庫存編號 849-4080
製造零件編號LV429687
HK$3,189.38
單位
NSX Range LV4 4P 100 A 100 kA 690 V - Fixed 161mm 140mm 86mm - - -
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 10 kA 690 V - DIN Rail Mount, Fixed Mount 108mm 80mm 137mm Distribution Protection Time Delay MCCB
RS庫存編號 178-8214
製造零件編號LV426359
HK$4,520.82
單位
Compact NSXm 3P 160 A 35 kA 690 V - DIN Rail Mount, Fixed Mount 81mm 80mm 137mm Distribution Protection Time Delay MCCB
RS庫存編號 874-4301
製造零件編號3VA1150-3EE36-0AA0
BrandSiemens
HK$2,621.28
單位
Sentron 3VA 3P 50 A 25 kA 690 V 500V Fixed 76.2mm 130mm 88mm General Purpose, Residential Instantaneous MCCB
RS庫存編號 178-7751
製造零件編號LV426467
HK$3,943.75
單位
Compact NSXm 4 100 A 50 kA 690 V - Screw 108mm 137mm 80mm Distribution, Protection Time Delay MCCB
RS庫存編號 849-4403
製造零件編號LV431621
HK$4,166.66
單位
NSX Range LV4 3P 250 A - - - - - - - - - -
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 178-7760
製造零件編號LV426476
HK$4,234.52
單位
Compact NSXm 4 80 A 50 kA 690 V - Screw 108mm 137mm 80mm Distribution, Protection Time Delay MCCB
RS庫存編號 178-7735
製造零件編號LV426453
HK$2,895.35
單位
Compact NSXm 3 40 A 10 kA 690 V - Screw 81mm 137mm 80mm Distribution, Protection Time Delay MCCB
RS庫存編號 849-4163
製造零件編號LV429845
HK$2,476.54
單位
NSX Range LV4 3P 100 A 90 kA 690 V - Fixed 161mm 105mm 86mm - - -
RS庫存編號 849-4210
製造零件編號LV429863
HK$3,086.34
單位
NSX Range LV4 4P 100 A 90 kA 690 V - Fixed 161mm 140mm 86mm - - -
RS庫存編號 178-7756
製造零件編號LV426472
HK$3,608.33
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 178-8172
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 874-4253
製造零件編號3VA1125-4EE36-0AA0
BrandSiemens
HK$2,763.52
單位
Sentron 3VA 3 25 A 36 kA 690 V 500V Fixed 76.2mm 130mm 88mm General Purpose, Residential Instantaneous MCCB