The Schneider Electric A9N16324 is a 4-pole Acti9 xID residual current circuit breaker (RCCB) rated at 40 A with 30 mA earth-leakage sensitivity, Type A-SI (Super Immunised). The 30 mA sensitivity covers personnel protection against direct contact. Type A-SI means it handles pulsed DC fault currents (rectifier loads, variable-speed drives) while rejecting nuisance trips from high-frequency leakage — common on modern industrial lines with switched-mode supplies. Breaking capacity is 500 A per EN/IEC 61008-1, adequate for downstream fault clearance in distribution sub-panels. The instantaneous trip response clears earth faults without intentional delay.
Clip-on mounting to a 35 mm DIN rail. 18 mm phase-to-phase pitch. 72 mm wide, occupies 8 x 9 mm pitches. Neutral on the left. Toggle control with ON/OFF/fault-trip local signalling. Wire strip length 14 mm. Tightening torque 3.5 N·m top or bottom. IP20 finger-safe — install inside an enclosure rated for the environment. Padlocking provision for lockout/tagout. Suitability for isolation marked — the contact position indicator confirms the main contacts are open.
Ratings & Environment
Rated insulation voltage 500 V AC. Pollution degree 2 (non-conductive pollution only). Storage range -40 to 85 °C; 95 % RH at 55 °C. Electrical and mechanical durability 4,000 cycles each. Suited for distribution panel duty rather than frequent switching applications like motor control.
Compliance
Certified to EN 61008-2-1, IEC 61008-2-1, and EN/IEC 61008-1. White enclosure, 81 mm height, 75 mm depth.