Changes to Australian Standards and Ampfibian's continuing search for the highest quality components, means the RCBO in your Ampfibian may look different to the one on the packaging, the website, or in the instructions. Please be assured that all RCBOs work identically, even if the appearance, colour and position of the toggle and test switches is different. RCBOs also come in two different thicknesses; older ones are wider, and newer ones are narrower. the breakers in the pictures might be different to the ones featured in the instructions, on the packaging, and on the websiteBoth perform identically and offer the same high level of protection. RCBOs' function and performance are tightly controlled by Australian and New Zealand Standards authorities; Ampfibian products are independently tested and certified to comply with all relevant ANZ standards.