Part of the Wylex MCBs and RCBOs section, this 6A 30mA RCBO B CURVE 1P is for use in all Wylex domestic 'NH' consumer units.\r\nThe 'NHX' range of RCBOs and MCBs replace the now obsolete 'NSB' range.\r\nRCBO (Residual Current Breaker with Overload Protection) combines functions of a MCB and RCD in one unit. Used to protect the particular circuit and preferable to separate RCD and MCBs. RCBO's detect over currents due to both overloads and faults.\r\nBe sure to use this specific RCBO in conjunction with a Wylex consumer unit.\r\nA very important piece of kit, customers will automatically receive a 1 year guarantee on this product like all products available from Electricals 24/7.