The BU2P20RCD is a 30mA sensing residual current device with double pole 20A rated switching contacts. The RCD constantly monitors the current flow between the phase active and neutral for the device that it is connected to whether an appliance or socket outlet. When the RCD senses an imbalance at the 30mA threshold it trips the circuit and removes the power before personal injury can occur. This RCD is designed to be used as local protection within the Bufalo modular range and should be used in conjunction with other forms or personal and overcurrent protecting in the electrical system.
This Buffalo RCD is designed to function within the IP66 rated housing and provide personal protection for Earth faults and is intended for use either as a permanently wired device in an installation or connected to a socket outlet in a multi-gang arrangement for use with plugging in different appliances or equipment.
The RCD contains a green LED on the front that shows there is power to the unit, however the RCD is not armed so power will not be supplied to the connected device. This is also an indication that the RCD has tripped. When the green RESET button is pressed, the RCD contact will close (providing the circuit is safe) and the LED will show red indicating that power is flowing through the unit to the connected device. When the yellow test button is pressed the LED will trip and the red LED will turn green, indicating the connected circuit is safe. The RCD is in the circuit for providing personal protection and should not be used as an on/ off switch for a socket outlet or device. These should have their own functional switch or auto switched socket arrangement.
The RCD is for personal protection and should be connected to a 20A max MCB at the distribution board to prevent damage from overload to circuits or the RCD.
Prior to maintenance devices MUST be disconnected from the RCD to prevent damage and MUST be isolated at the switchboard.
