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. 831-9172
Mfr. Part No.1SDA067416R1
BrandABB
€236.81
Each
units
Protecta XT1N 3 100 A 36 kA 690 V 500V DIN Rail Mount 76.2mm 130mm 70mm - - -
RS Stock No. 831-9175
Mfr. Part No.1SDA067418R1
BrandABB
€372.96
Each
units
Protecta XT1N 3 160 A 36 kA 690 V 500V - 76.2mm 130mm 70mm - - -
RS Stock No. 849-4368
Mfr. Part No.LV430841
€316.06
Each
units
NSX Range LV4 3 160 A 90 kA 690 V - Fixed 161mm 105mm 86mm - - -
RS Stock No. 742-2113
Mfr. Part No.LV430841
€194.11
Each
units
NSX Range LV 3 160 A 10 kA 690 V - Fixed 161mm 105mm 86mm - - -
RS Stock No. 874-4288
Mfr. Part No.3VA1140-3EE36-0AA0
BrandSiemens
€205.22
Each
units
Sentron 3VA 3 40 A 25 kA 690 V 500V Fixed 76.2mm 130mm 88mm General Purpose, Residential Instantaneous MCCB
RS Stock No. 849-4248
Mfr. Part No.LV430630
€383.74
Each
units
NSX Range LV4 3 160 A 85 kA 690 V - Fixed 161mm 105mm 86mm - - -
RS Stock No. 628-7988
Mfr. Part No.265720 & NZMN1-M63
BrandEaton
€251.47
1 Box of 1
Box(es)
xEnergy NZM1 3 63 A 50 kA 690 V 500V Fixed 90mm 145mm 84.5mm - - -
RS Stock No. 538-3833
Mfr. Part No.E203/100RD
BrandABB
€67.10
Each
units
Pro M S2CU 3 100 A - 230 V, 400 V - DIN Rail 52.5mm 68mm 90mm - - -
RS Stock No. 628-8060
Mfr. Part No.259141 & PN1-100
BrandEaton
€192.78
1 Box of 1
Box(es)
- PN1 3 100 A 80 kA 690 V - Fixed 90mm 145mm 84.5mm - - -
RS Stock No. 831-9163
Mfr. Part No.1SDA067414R1
BrandABB
€230.57
Each
units
Protecta XT1N 3 63 A 36 kA 690 V 500V DIN Rail Mount 76.2mm 130mm 70mm - - -
RS Stock No. 849-4343
Mfr. Part No.LV430791
€498.37
Each
units
NSX Range LV4 3 160 A 100 kA 690 V - Fixed 161mm 105mm 86mm - - -
RS Stock No. 874-4304
Mfr. Part No.3VA1140-4EF36-0AA0
BrandSiemens
€227.06
Each
units
Sentron 3VA 3 40 A 36 kA 690 V 500V Fixed 76.2mm 130mm 88mm General Purpose, Residential Instantaneous MCCB
RS Stock No. 628-8082
Mfr. Part No.259142 & PN1-125
BrandEaton
€249.27
1 Box of 1
Box(es)
- PN1 3 125 A 80 kA 690 V - Fixed 90mm 145mm 84.5mm - - -
RS Stock No. 731-9544
Mfr. Part No.4 067 76
BrandLegrand
€26.88
Each
units
- DNX3 1 25 A 4.5 kA 230 V - - - - - - - -
RS Stock No. 849-4191
Mfr. Part No.LV429856
€278.74
Each
units
NSX Range LV4 4 100 A 90 kA 690 V - Fixed 161mm 140mm 86mm - - -
RS Stock No. 874-4284
Mfr. Part No.3VA1140-3ED36-0AA0
BrandSiemens
€194.70
Each
units
Sentron 3VA 3 40 A 25 kA 690 V 500V Fixed 76.2mm 130mm 88mm General Purpose, Residential Instantaneous MCCB
RS Stock No. 849-4462
Mfr. Part No.LV431680
€878.38
Each
units
NSX Range LV4 4 250 A 100 kA 690 V - Fixed 161mm 140mm 86mm - - -
RS Stock No. 849-4034
Mfr. Part No.LV429670
€271.44
Each
units
NSX Range LV4 3 100 A 100 kA 690 V - Fixed 161mm 105mm 86mm - - -
RS Stock No. 874-4389
Mfr. Part No.3VA2125-5HL32-0AA0
BrandSiemens
€417.87
Each
units
Sentron 3VA 3 25 A 55 kA 690 V - Fixed 105mm 181mm 107mm Commercial Buildings Instantaneous MCCB
RS Stock No. 849-4419
Mfr. Part No.LV431630
€549.85
Each
units
NSX Range LV4 3 250 A 85 kA 690 V - Fixed 161mm 105mm 86mm - - -
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Compact Nsxm Is The Smallest Size Molded Case Circuit Breaker (MCCB) In The Compact Nsx Range With Its Convenient Design, It Can Easily Accommodate Applications From 16 To 160 A. Available With Integrated Earth Leakage Protection.
Compact NSXm is the smallest size molded case ...
Description:
Compact NSXm is the smallest size molded case circuit breaker (MCCB) in the Compact NSX range With its convenient design, it can easily accommodate applications from 16 to 160 A. Available with integrated earth leakage protection.