The Schneider Electric A9L15587 is an Acti9 iPF40 Type 2 surge arrester, a 2-pole MOV-based unit rated for 230 V AC (+/- 10 %) at 50/60 Hz with a maximum continuous operating voltage of 340 V common mode.
The nominal discharge current is 15 kA per mode (L/PE and N/PE), and the maximum discharge current reaches 40 kA per mode. Total discharge current across all paths sums to 80 kA. These figures define the surge capacity: 15 kA is the sustained rating for repeated events, while 40 kA is the single-event survival limit. The protection level Up is clamped below 1.5 kV common mode, which keeps let-through voltage within the impulse withstand of downstream equipment rated for 1.5 kV or higher. The unit is designed for TN-C systems only — the earthing arrangement is fixed, so verify your network configuration before specifying. It requires an associated circuit breaker upstream; the manufacturer lists iC60N, iC60H, or iC60L at 40 A curve C with interrupting capacities from 10 kA to 25 kA depending on the breaker variant. Terminals accept 2.5 to 35 mm² conductors on both top and bottom, tunnel type, with a tightening torque of 2.5 N.m. The housing is white (RAL 9003), rated IK03 for mechanical impact, and occupies 4 x 9 mm pitches (36 mm width) on the DIN rail.
The surge arrester complies with EN 61643-11 and IEC 61643-11, the governing standards for low-voltage surge protective devices. Quality marks include OVE (Austria), KEMA-KEUR (Netherlands), and NF (France). Operating temperature range is -25 to 60 °C, storage from -40 to 85 °C, with relative humidity 5 to 90 % and maximum operating altitude 2000 m.