Crabtree launches single module arc fault detection device

October 15th 2019

  • Crabtree have launched a new product to support customers with the 18th Edition wiring regulations, the single module arc fault detection device
  • The latest innovation contains 3 forms of technology in one. Including MCB, RCD and AFDD technology
  • The device prevents electrical fires from arc faults, and can be retrofitted into existing boards

Easier. Safer. Faster.

Crabtree has launched a new single module arc fault detection device to help prevent electrical fires.

One of the leading brands of Electrium, Crabtree, has been providing electrical safety excellence in the UK electrical distribution industry for over 100 years.

The launch of the single module arc fault detection device is one of several solutions made available by the brand to help customers conform towards the IET 18th Edition of the wiring regulations.

How does it work?

This clever little device detects and disconnects arc faults which could lead to an electrical fire in the home.

The single module arc fault detection device uses an AFDD microcontroller and ‘SIARC’ software.

SIARC is a Siemens patented software which has been proven over many years in the USA. This software reliably distinguishes between dangerous arc faults and the operational sparking of electrical equipment to avoid unwanted nuisance tripping.

With these two technologies combined, the device analyses a wide range of criteria, including current voltage and high frequency noise to find a dangerous arc in the fraction of a second from the rest of the operational sparking.

The AFDD microcontroller is also constantly making numerous calculations a second to determine whether it has broken one of the five criteria set to detect a fault.

What else can it do?

It also does both the job of an MCB and RCD, and it is able to detect arc faults that these types of technology simply can’t. What’s more, it is half the size of its predecessor and can be retrofitted into existing boards. Providing you with more space and time on your next job.

Crabtree single module AFDDs carry out a self-test function when initially powered up, and the AFDD repeats this self-test function every 15 hours. They also have a test button (just like an RCDs or RCBOs), which you can use during the initial verification or EICR. Model certificates now include AFDDs among the devices listed, with space for test results.

These clever little devices can easily be retrofitted into existing Starbreaker consumer units, helping you to get on with more pressing jobs on site.

What the regs say

AFDDs are now in the IET wiring regulations. The 18th Edition says that arc fault detection devices can be used to provide additional protection against fire caused by arc faults in the final AC circuits. In a recent survey on Arc Fault Detection Devices, the majority of respondents agreed that the technology can help to prevent electrical fires. 

Get more on single module arc fault detection devices

Ready to protect your customers? Get in touch with your local sales engineer today.

Discover more about arc fault detection devices and the 18th Edition in our dedicated site right here.

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