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. 831-9185
Mfr. Part No.1SDA068210R1
BrandABB
$520.74
Each
units
Protecta XT3D 3P 250 A - 690 V 500V DIN Rail Mount 105mm 150mm 70mm - - -
RS Stock No. 849-4150
Mfr. Part No.LV429840
$393.20
Each
units
NSX Range LV4 3P 100 A 90 kA 690 V - Fixed 161mm 105mm 86mm - - -
RS Stock No. 628-8032
Mfr. Part No.NZMN2-A160
BrandEaton
$841.04
1 Box of 1
Box(es)
xEnergy NZM2 3P 160 A 50 kA 690 V 750V Fixed 105mm 184mm 149mm - - -
RS Stock No. 849-4359
Mfr. Part No.LV430840
$652.13
Each
units
NSX Range LV4 3P 160 A 90 kA 690 V - Fixed 161mm 105mm 86mm - - -
RS Stock No. 849-4497
Mfr. Part No.LV431770
$1,255.04
Each
units
NSX Range LV4 3P 250 A 85 kA 690 V - Fixed 161mm 105mm 86mm - - -
RS Stock No. 849-3961
Mfr. Part No.LV429631
$392.94
Each
units
NSX Range LV4 3P 100 A 85 kA 690 V - Fixed 161mm 105mm 86mm - - -
RS Stock No. 849-4141
Mfr. Part No.LV429807
$946.93
Each
units
NSX Range LV4 4P 100 A 90 kA 690 V - Fixed 161mm 140mm 86mm - - -
RS Stock No. 538-3833
Mfr. Part No.E203/100RD
BrandABB
$91.62
Each
units
Pro M S2CU 3P 100 A - 230 V, 400 V - DIN Rail 52.5mm 68mm 90mm - - -
RS Stock No. 849-4539
Mfr. Part No.LV431832
$863.45
Each
units
NSX Range LV4 3P 250 A 90 kA 690 V - Fixed 161mm 105mm 86mm - - -
RS Stock No. 517-4875
Mfr. Part No.MGP1001L3
$170.92
Each
units
Powerpact4 MGP 1P 100 A 25 kA 230 V - Surface Mount - - - - - -
RS Stock No. 849-4416
Mfr. Part No.LV431632
$764.27
Each
units
NSX Range LV4 3P 250 A 85 kA 690 V - Fixed 161mm 105mm 86mm - - -
RS Stock No. 874-4402
Mfr. Part No.3VA2225-5HL32-0AA0
BrandSiemens
$1,456.68
Each
units
Sentron 3VA 3P 250 A 55 kA 690 V - Fixed 105mm 181mm 107mm Commercial Buildings Instantaneous MCCB
RS Stock No. 849-4333
Mfr. Part No.LV430780
$1,190.76
Each
units
NSX Range LV4 4P 160 A 85 kA 690 V - Fixed 161mm 140mm 86mm - - -
RS Stock No. 454-8067
Mfr. Part No.NZMB1-A80
BrandEaton
$285.65
Each
units
xEnergy NZM1 3P 80 A 25 kA 440 V - Fixed 90mm 145mm 84.5mm - - -
RS Stock No. 849-4282
Mfr. Part No.LV430670
$723.42
Each
units
NSX Range LV4 3P 160 A 100 kA 690 V - Fixed 161mm 105mm 86mm - - -
RS Stock No. 831-9179
Mfr. Part No.1SDA068058R1
BrandABB
$735.04
Each
units
Protecta XT3N 3P 200 A 36 kA 690 V 500V DIN Rail Mount 105mm 150mm 70mm - - -
RS Stock No. 628-8082
Mfr. Part No.PN1-125
BrandEaton
$333.37
1 Box of 1
Box(es)
- PN1 3P 125 A 80 kA 690 V - Fixed 90mm 145mm 84.5mm - - -
RS Stock No. 454-8130
Mfr. Part No.NZMN1-A100
BrandEaton
$514.01
Each
units
xEnergy NZM1 3P 100 A 50 kA 690 V 750V Fixed 90mm 145mm 84.5mm - - -
RS Stock No. 628-8048
Mfr. Part No.PN1-63
BrandEaton
$216.53
1 Box of 1
Box(es)
- PN1 3P 63 A 80 kA 690 V - Fixed 90mm 145mm 84.5mm - - -
RS Stock No. 628-8026
Mfr. Part No.NZMN2-M160
BrandEaton
$958.92
1 Box of 1
Box(es)
xEnergy NZM2 3P 160 A 50 kA 690 V 750V Fixed 105mm 184mm 149mm - - -
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.