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 at Maximum Voltage Rating Rated AC Voltage Rated DC Voltage Mounting Style Length Width Depth Break Time Circuit Breaker Type Mounting Hole Diameter
RS Stock No. 2552206074
Mfr. Part No.1SDA067598R1 - XT2H 160 TMA 40-400 3p F F
BrandABB
MYR1,054.80
Each
units
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RS Stock No. 2552206038
Mfr. Part No.2CCS813001R0824 - S803B-C100
BrandABB
MYR512.75
Each
units
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RS Stock No. 2552206095
Mfr. Part No.1SDA067557R1 - XT2S 160 TMA 80-800 3p F F
BrandABB
MYR849.70
Each
units
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RS Stock No. 2552206049
Mfr. Part No.1SDA066801R1 - XT1B 160 TMD 25-450 3p F F
BrandABB
MYR410.20
Each
units
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RS Stock No. 2552206064
Mfr. Part No.1SDA067424R1 - XT1N 160 TMD 100-1000 4p F F
BrandABB
MYR1,043.08
Each
units
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