The Schneider Electric A9TDNC616 is an Acti9 Active iCV40N ARC residual current circuit breaker with integral overcurrent protection (RCBO) in a 1P+N format, rated at 16 A with a C-curve trip characteristic. The breaking capacity is 6000 A Icn at 230 V AC 50 Hz, certified to EN/IEC 61009-2-1, which covers the majority of domestic and commercial fault-level requirements in 230 V networks. This unit also carries arc-fault detection (AFDD) per EN/IEC 62606, adding series and parallel arc-fault protection on top of the thermal-magnetic and residual-current elements. The local signalling includes a fault-trip LED and an arc-fault diagnostic indicator, which helps a field technician identify the cause of a trip without additional test gear.
The part is listed with a targeted country of India, but the EN/IEC certifications (EN/IEC 62606, EN/IEC 61009-1, EN/IEC 61009-2-1) make it acceptable in any jurisdiction that recognises those standards. For UL-listed installations, verify local acceptance of the IEC marking.
Cable entry from top or bottom, with a wire stripping length of 14 mm and a tightening torque of 2 N·m. Tropicalisation severity B per IEC 60068-2-30 for 28 days is standard, so the unit holds up in high-humidity environments (95 % RH at 55 °C).
Electrical performance and metering
Built-in measurement of voltage, current, active power, and power factor with stated accuracies of ±2 % for voltage and current, ±5 % for power. This allows the RCBO to double as a basic energy-monitoring point in the distribution board without a separate meter. Total power losses are 3.408 W (2.65 W per pole). Electrical durability is 20,000 cycles at 230 V AC 50 Hz, matching the mechanical durability of 20,000 cycles. Limitation class 3 means the device limits let-through energy well in a fault event.