A two-pole residual current circuit breaker rated 16 A with a 30 mA residual current setting, built for flush mounting with a 45 mm installation depth rather than for a DIN rail — the form used where the protection goes into a wall box at the point of use instead of back at the distribution board. An RCCB disconnects the circuit when the current flowing out does not match the current returning, which is the signature of a fault to earth, whether through failed insulation or through a person. It provides no overcurrent protection of its own. At 30 mA it is rated for the protection of people against electric shock. Rated voltage 230 V, 50 Hz, IP20, non-selective. Supplied by cBallast on quote-to-invoice terms; lead time and freight are quoted per RFQ against the destination Incoterm.