The Schneider A9L16442 is an Acti9 iPRD65r Type 2 surge arrester with pluggable MOV cartridges, rated for 230 V AC (+/- 10%) at 50/60 Hz in TN-C earthing systems. It carries a 20 kA nominal discharge current per mode (L/PE, N/PE) and a 65 kA maximum discharge current per mode, summing to 130 kA total discharge capability. The 20 kA nominal discharge (In) tells you this unit handles the most common surge events on a distribution board without degrading — it's the rating that governs real-world endurance, not the peak. The 1.5 kV voltage protection level (Up) means downstream equipment sees clamped voltage below that threshold during a surge event.
Integration & Panel Fit
Mounts via clip-on to a standard DIN rail — 36 mm wide (4 module pitches), 81 mm tall, 69 mm deep. Tunnel-type terminals accept 2.5 to 35 mm² conductors on both top and bottom, with a tightening torque of 2.5 N·m. The remote signalling contact (1 C/O, rated 0.25 A / 250 V AC) lets a PLC or building management system monitor the arrester's status without a separate interface module. The manufacturer specifies associated circuit breakers for back-up protection: IC60N, iC60H, NG125N, NG125H, or NG125L — all 50 A curve C, with breaking capacities from 10 kA to 50 kA depending on the breaker chosen. This is a Type 2 arrester per EN 61643-11 and IEC 61643-11, intended for distribution-level surge protection in TN-C systems.