The Schneider Electric A9DC6906 is a 3-pole + neutral residual current breaker with overcurrent protection (RCBO) from the Acti9 iC60 series. It combines a C-curve thermal-magnetic MCB (6 A rated at 30 °C) with integrated 30 mA earth-leakage protection in a single 54 mm wide module that clips onto a DIN rail. Rated breaking capacity is 6 kA Icn at 400/415 V AC — sufficient for most residential and light commercial final subcircuits in TN earthing systems. The C-curve characteristic means the magnetic trip operates between 5 and 10 times In (30–60 A), suited for inductive loads like small motors or fluorescent lighting where inrush is moderate.
Clip-on mounting to standard DIN rail. The module occupies 6 x 9 mm pitches (54 mm width). Depth is 77.2 mm, height 112 mm. Wire stripping length is 11 mm for bottom connections. Tightening torque for the power circuit is 2.5 N.m.
Mechanical durability is rated at 20,000 cycles; electrical durability at 5,000 cycles under rated load. Limitation class 3 indicates energy-limiting performance that reduces let-through energy during short circuits.