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. 849-4608
Mfr. Part No.LV432776
$2,356.78
Each
units
NSX Range LV4 3P - 85 kA - - - 255mm 140mm 110mm - - -
RS Stock No. 849-4208
Mfr. Part No.LV429861
$562.09
Each
units
NSX Range LV4 4P 100 A 90 kA 690 V - Fixed 161mm 140mm 86mm - - -
RS Stock No. 849-4412
Mfr. Part No.LV431631
$764.27
Each
units
NSX Range LV4 3P 250 A 85 kA 690 V - Fixed 161mm 105mm 86mm - - -
RS Stock No. 849-4361
Mfr. Part No.LV430842
$573.03
Each
units
NSX Range LV4 3P 160 A 90 kA 690 V - Fixed 161mm 105mm 86mm - - -
RS Stock No. 628-7994
Mfr. Part No.NZMN1-M80
BrandEaton
$370.61
1 Box of 1
Box(es)
xEnergy NZM1 3P 80 A 50 kA 690 V 500V Fixed 90mm 145mm 84.5mm - - -
RS Stock No. 849-4012
Mfr. Part No.LV429652
$444.81
Each
units
NSX Range LV4 4P 100 A 85 kA 690 V - Fixed 161mm 140mm 86mm - - -
RS Stock No. 849-4453
Mfr. Part No.LV431670
$1,117.68
Each
units
NSX Range LV4 3P 250 A 85 kA 690 V - Fixed 161mm 105mm 86mm - - -
RS Stock No. 849-4504
Mfr. Part No.LV431780
$1,664.58
Each
units
NSX Range LV4 4P 250 A 85 kA 690 V - Fixed 161mm 140mm 86mm - - -
RS Stock No. 849-4273
Mfr. Part No.LV430650
$874.68
Each
units
NSX Range LV4 4P 160 A 85 kA 690 V - Fixed 161mm 140mm 86mm - - -
RS Stock No. 628-8105
Mfr. Part No.PN2-250
BrandEaton
$623.25
1 Box of 1
Box(es)
- PN2 3P 250 A 80 kA 690 V - Fixed 105mm 184mm 149mm - - -
RS Stock No. 849-4620
Mfr. Part No.LV432976
$4,276.53
Each
units
NSX Range LV4 3P - 85 kA - - - 255mm 140mm 110mm - - -
RS Stock No. 874-4219
Mfr. Part No.3VA1116-4EE36-0AA0
BrandSiemens
$910.24
Each
units
Sentron 3VA 3P 160 A 36 kA 690 V 500V Fixed 76.2mm 130mm 88mm General Purpose, Residential Instantaneous MCCB
RS Stock No. 849-4494
Mfr. Part No.LV431772
$856.94
Each
units
NSX Range LV4 3P 250 A 85 kA 690 V - Fixed 161mm 105mm 86mm - - -
RS Stock No. 849-4015
Mfr. Part No.LV429650
$624.53
Each
units
NSX Range LV4 4P 100 A 85 kA 690 V - Fixed 161mm 140mm 86mm - - -
RS Stock No. 537-5589
Mfr. Part No.NZMN2-VE250
BrandEaton
$1,356.22
Each
units
xEnergy NZM2 3P 250 A 50 kA 690 V 750V Fixed 105mm 184mm 149mm - - -
RS Stock No. 454-8089
Mfr. Part No.NZMB1-A125
BrandEaton
$394.56
Each
units
xEnergy NZM1 3P 125 A 25 kA 440 V - Fixed 90mm 145mm 84.5mm - - -
RS Stock No. 849-3949
Mfr. Part No.LV429623
$312.34
Each
units
NSX Range LV4 3P 100 A 85 kA 690 V - Fixed 161mm 105mm 86mm - - -
RS Stock No. 831-9169
Mfr. Part No.1SDA067411R1
BrandABB
$325.40
Each
units
Protecta XT1N 3P 32 A 36 kA 690 V 500V DIN Rail Mount 76.2mm 130mm 70mm - - -
RS Stock No. 874-4385
Mfr. Part No.3VA2116-5HL36-0AA0
BrandSiemens
$1,150.32
Each
units
Sentron 3VA 3P 160 A 55 kA 690 V - Fixed 105mm 181mm 107mm Commercial Buildings Instantaneous MCCB
RS Stock No. 849-4425
Mfr. Part No.LV431633
$606.10
Each
units
NSX Range LV4 3P 250 A 85 kA 690 V - Fixed 161mm 105mm 86mm - - -
Related Products
The Acti9 Disbo series of MCBs by Schneider ...
Description:
The Acti9 Disbo series of MCBs by Schneider Electric provides excellent circuit protection particularly in combating short circuits and overload currents. These MCBs are rigorously tested by Schneider and are compliant with standards such as IEC/EN 60898 & 60947-2. These ...
The new 3VA1 molded case circuit breakers reliably ...
Description:
The new 3VA1 molded case circuit breakers reliably perform all the tasks associated with line protection.The devices of the 3VA1 series fulfill all standard tasks in line protection, thanks to their particularly compact design, 3VA1 MCCBs are the perfect choice ...
To be fitted directly to the NZM2 range ...
Description:
To be fitted directly to the NZM2 range of MCCBs.