Mains terminal block, the connection between the fixed wiring and the appliance for some models of Robinhood oven & cooktop. These usually burn out due to poorly tightened connectors within the block, its important to have these fitted by a qualified electrician. Designed to be connected with circular flexible cable.
ROBINHOOD: OBD605K70B, OBD605K70W, RHBO65DX, RHBO65MX