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RCBOs

ESV has imposed additional requirements on the supply of RCBOs in Victoria.

Suppliers must undertake additional testing and verification to ensure their products still operate satisfactorily if there is a defect in the installation or if the product has been installed incorrectly.

These requirements are listed in Additional testing and verification requirements for RCBOs.

The prohibition applies to all compact RCBOs even if they are integrated in other electrical equipment such as preassembled switchboards.

The prohibition does not apply to DIN mountable RCBOs that are greater than 110mm in length and DIN mountable RCBOs that have a short circuit breaking capacity of 10kA or greater.

However, all RCBOs that are marked or marketed as being for household or residential use are covered by the prohibition regardless of their length or short circuit breaking capacity.

For a list of RCBOs that comply with ESV’s additional testing and verification requirements, click here.

If a RCBO covered by the prohibition is not on the list, it cannot be supplied or installed after 1 July 2018.

Any products that do not meet these new requirements will be prohibited from sale. Read the prohibition notice – supply of RCBOs.

ESV’s investigation into RCBOs was instigated by a fatality in August 2016 in which it was found that a commonly used RCBO failed to operate.

ESV has identified two situations where 240V can be present on the load side of an RCBO when it is in the open position:

  • The device is installed in the opposite orientation to the one indicated by the manufacturer
  • The RCBO is installed in the correct orientation, however there is a defect in the installation downstream from the device and there is 240V present on the load terminals when the device is in the ‘off’ position.

The prohibition addresses this issue by ensuring that only RCBOs that do not have this design issue may be supplied in Victoria.

Examples of RCBOs that are required to be listed on the ESV website


RCBOs of similar construction, may only be supplied if listed on ESV’s website.

RCBOs prohibition Q&A

For a list of Q&As regarding the RCBO prohibition, click here.

Contact ESV

If you require further information, please contact ESV’s Equipment Safety team on 03 9203 9700 or at info@energysafe.vic.gov.au.