The Schneider Electric A9MEM1543 PowerTag A9 M63 is a 3-pole energy sensor rated for 63 A maximum current (Imax) with a 10 A basic current (Ib), supplied at 200-240 V AC between phases. It measures active power, current, voltage, power factor, and active energy to Class 1 accuracy per IEC 61557-12, making it suitable for submetering and energy allocation in switchboard applications.
Mounts directly on a circuit breaker via screws (terminals) at the top or bottom of the breaker — no DIN rail required. The Monoconnect form factor keeps the sensor compact at 54 mm wide × 43 mm deep × 16.5 mm high. Terminal capacity accepts 1.5-16 mm² rigid or 1.5-2.5 mm² stranded cable. Compatible concentrators include EcoStruxure Panel Server (Entry, Universal, Advanced), Acti9 PowerTag Link, Acti9 PowerTag Link HD, and the Wiser hub generation 2 — the sensor reports wirelessly to whichever gateway is installed in the panel.