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 Stock No. 849-4119
Mfr. Part No.LV429770
£421.00
Each
Units
NSX Range LV4 3P 100 A 85 kA 690 V - Fixed 161mm 105mm 86mm - - -
RS Stock No. 849-4618
Mfr. Part No.LV432896
£1,897.00
Each
Units
NSX Range LV4 4P 630 A 85 kA 690 V - Fixed 255mm 185mm 110mm - - -
RS Stock No. 742-2113
Mfr. Part No.LV430841
£372.00
Each
Units
NSX Range LV 3P 160 A 10 kA 690 V - Fixed 161mm 105mm 86mm - - -
RS Stock No. 742-2123
Mfr. Part No.LV429670
£310.00
Each
Units
NSX Range LV 3P 100 A 10 kA 690 V - Fixed 161mm 105mm 86mm - - -
RS Stock No. 849-4034
Mfr. Part No.LV429670
£310.00
Each
Units
NSX Range LV4 3P 100 A 100 kA 690 V - Fixed 161mm 105mm 86mm - - -
RS Stock No. 849-4591
Mfr. Part No.LV432695
£994.00
Each
Units
NSX Range LV4 3P 400 A 85 kA 690 V - Fixed 255mm 140mm 110mm - - -
RS Stock No. 874-4408
Mfr. Part No.3VA2163-5HL36-0AA0
BrandSiemens
£325.55
Each
Units
Sentron 3VA 3P 63 A 55 kA 690 V - Fixed 105mm 181mm 107mm Commercial Buildings Instantaneous MCCB
RS Stock No. 849-4333
Mfr. Part No.LV430780
£726.00
Each
Units
NSX Range LV4 4P 160 A 85 kA 690 V - Fixed 161mm 140mm 86mm - - -
RS Stock No. 517-4780
Mfr. Part No.MGP0301L2
£131.00
Each
Units
Powerpact4 MGP 1P 30 A 25 kA 230 V - Surface Mount - - - - - -
RS Stock No. 742-2167
Mfr. Part No.LV432695
£994.00
Each
Units
NSX Range LV 3P 400 A 20 kA 690 V - Fixed 255mm 140mm 110mm - - -
RS Stock No. 874-4339
Mfr. Part No.3VA1180-3ED36-0AA0
BrandSiemens
£163.07
Each
Units
Sentron 3VA 3P 80 A 25 kA 690 V 500V Fixed 76.2mm 130mm 88mm General Purpose, Residential Instantaneous MCCB
RS Stock No. 849-4359
Mfr. Part No.LV430840
£454.00
Each
Units
NSX Range LV4 3P 160 A 90 kA 690 V - Fixed 161mm 105mm 86mm - - -
RS Stock No. 742-2117
Mfr. Part No.LV430840
£454.00
Each
Units
NSX Range LV 3P 160 A 10 kA 690 V - Fixed 161mm 105mm 86mm - - -
RS Stock No. 849-4040
Mfr. Part No.LV429674
£304.00
Each
Units
NSX Range LV4 3P 100 A 100 kA 690 V - Fixed 161mm 105mm 86mm - - -
RS Stock No. 849-3974
Mfr. Part No.LV429636
£243.00
Each
Units
NSX Range LV4 3P 100 A 85 kA 690 V - Fixed 161mm 105mm 86mm - - -
RS Stock No. 849-3930
Mfr. Part No.LV429622
£223.00
Each
Units
NSX Range LV4 3P 100 A 85 kA 690 V - Fixed 161mm 105mm 86mm - - -
RS Stock No. 874-4345
Mfr. Part No.3VA1180-4ED36-0AA0
BrandSiemens
£169.42
Each
Units
Sentron 3VA 3P 80 A 36 kA 690 V 500V Fixed 76.2mm 130mm 88mm General Purpose, Residential Instantaneous MCCB
RS Stock No. 849-4595
Mfr. Part No.LV432696
£1,266.00
Each
Units
NSX Range LV4 4P 400 A 85 kA 690 V - Fixed 255mm 185mm 110mm - - -
RS Stock No. 874-4155
Mfr. Part No.3VA1110-3EF36-0AA0
BrandSiemens
£195.93
Each
Units
Sentron 3VA 3P 100 A 25 kA 690 V 500V Fixed 76.2mm 130mm 88mm General Purpose, Residential Instantaneous MCCB
RS Stock No. 849-4043
Mfr. Part No.LV429672
£304.00
Each
Units
NSX Range LV4 3P 100 A 100 kA 690 V - Fixed 161mm 105mm 86mm - - -
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