Breaking new ground

A new generation of circuit breakers will trip less frequently and monitor energy usage more reliably



Miniature residual current devices (RCDs) that use digital technology to detect current surges have hit the market for the first time.

The devices – which protect people from electric shocks in the home – promise to work more efficiently than traditional devices by precisely monitoring energy usage in the circuit.

Deepstream Technologies, based in North Wales, has won a $16m (£8m) contract to incorporate its electronics technology into Moeller’s Xpole range of circuit breakers.

Jonathan Luke, chief technology officer at Deepstream, says: “Traditional analogue RCDs are threshold detectors. They must trip at 30 milliamps, but, because they are electromechanical, there will be stiction – so they often trip at 24-25mA.”

He states that Deepstream’s intelligent sensor technology will prevent these ‘nuisance trips’ – caused by a temporary overloading of the circuit – by analysing the exact conditions in the circuit.

More details can be found in Eureka’s November issue.

Author
Tom Shelley

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