Consumer Unit Upgrades

Consumer Unit Upgrades


The humble fusebox isn't usually a popular topic of discussion but the technology built into these electrical control centres has advanced rapidly in recent years and they now feature a range of benefits all focused on saving your life!

If you have any questions or concerns about the best features to include in your fuse box call: 079 243 44440 This email address is being protected from spambots. You need JavaScript enabled to view it.

mcb The Miniature Circuit Breaker or MCB, is an automatically operated electrical switch designed to protect an electrical circuit from damage caused by excess current from an overload or short circuit.    

The Residual Current Device (RCD) also known as a Residual Current Breaker (RCB) or Residual Current Circuit Breaker (RCCB)
RCD's switch off or trip when they detect:

  • An earth fault current in the circuit.
  • An unequal current in the live and neutral wire.

RCDs trip an electrical circuit and disconnect the load points in 30m sec. RCD devices are very effective for electric shock protection. In a typical modern Consumer Unit there will be 2 RCD's each protecting the circuits in one half of the house.

rcbo The RCBO is a clever combination of MCB & RCD. It has the advantages of both breakers and it avoids the issue of half the house tripping out when an appliance has a fault.
Smart electronic equipment like computers, TV's and even washing machines can be sensitive to spikes in electricity supply. So, a surge protective device (SPD) which is designed to protect electrical systems and equipment from surge events is now a standard requirement in any fuse box. spd
afdd Finally, The Arc Fault Detection Device. AFDDs are protective devices installed in consumer units to provide protection from arc faults. They use microprocessor technology to analyze the waveform of electricity being used. They detect unusual signatures which would signify an arc on the circuit. AFDDs cut off power to affected circuitry to prevent fires. They are far more sensitive to arcs than conventional circuit protective devices but are not yet a legal requirement (2021)  The decision to install should be based on a comparison between installation cost @ approx £115 (2021) and relative risk factors.