Description
The BG Fortress CUMB40 is a high-capacity 40 Amp Miniature Circuit Breaker designed for heavy-duty domestic and light commercial applications. It is the standard choice for circuits requiring significant power delivery, such as large electric showers, smaller EV chargers, or dedicated sub-main feeds.
Engineered to fit the high-performance BG Fortress range, this 40A B-Curve MCB provides essential protection against overloads and short circuits while maintaining the slim profile of the Fortress series.
Key Features & Benefits
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High Amperage Rating: 40A capacity, specifically suited for high-wattage appliances and dedicated power runs.
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Type B Tripping: Designed for domestic sensitivity, tripping at 3 to 5 times the rated current to protect against faults without nuisance tripping.
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Robust Safety: 6kA short-circuit breaking capacity ensures the breaker can handle significant fault currents safely.
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Red/Green Status Indicator: Built-in positive contact indicator gives an immediate visual confirmation of the circuit status.
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Reliable Terminals: Features captive, combi-head terminal screws to ensure a secure, high-torque connection every time.




