What this RCCB carries
The Schneider Electric A9N16237 is an Acti9 xID residual current circuit breaker (RCCB) — 2-pole, 40 A rated current, 30 mA earth-leakage sensitivity, Type A-SI (Super Immunised). It clips onto a DIN rail, occupies 4 x 9 mm pitches (36 mm wide), and is rated for 230-240 V AC at 50 Hz. The 30 mA trip threshold covers standard personnel protection; the Type A-SI classification means it handles pulsed DC fault currents and is immunised against nuisance tripping from high-frequency leakage (switched-mode supplies, VFDs, LED drivers). Breaking capacity is 500 A per EN/IEC 61008-1.
Clip-on mounting to DIN rail, neutral on the left, tunnel terminals top and bottom — accepts 1-35 mm² rigid or 1-25 mm² flexible. Wire stripping length 14 mm; tightening torque 3.5 N·m. Connection pitch is 18 mm between phases. IP20 finger-safe front, suitable for enclosed distribution boards. Local signalling shows ON, OFF, and fault trip; padlocking provision for lockout/tagout.
