It's a 2-pole unit rated at 230 V AC (+/- 10%) at 50/60 Hz, with a maximum continuous operating voltage (Uc) of 340 V in common mode for both L/PE and N/PE paths. The nominal discharge current (In) is 15 kA per mode, and the maximum discharge current (Imax) is 40 kA per mode, with a total discharge current (Itotal) of 80 kA. The protection level (Up) is clamped to under 1.4 kV in common mode, which is typical for a Type 2 device and suitable for protecting sensitive downstream equipment in a TN-C earthing system.
There is no official manufacturer successor order code listed in the lifecycle record. If you need a drop-in replacement for an existing panel, the closest functional match would be a current-production Acti9 iPRD Type 2 surge arrester with the same 2-pole, 340 V rating and 40 kA Imax — but verify the terminal layout and cartridge compatibility, as the physical footprint and connection scheme may differ from this obsolete variant.
The A9L16667 carries KEMA-KEUR, NF, and OVE quality labels, and is designed to meet EN 61643-11 and IEC 61643-11 for Type 2 surge protective devices. The IK degree of protection is IK03 per IEC 62262, meaning it resists impact energy of 0.35 J — sufficient for panel installation where it's not directly exposed to heavy mechanical stress.