The GS2L3 is a 3-pole switch-disconnector-fuse from the TeSys GS range, rated for 160 A operational current at 400 V AC-23A/B and 125 A at 690 V in the same duty classes. It accepts DIN-style fuse links, size 0, and is built to IEC 60947-3. That standard covers the making and breaking of motor circuits under load — not just isolation, but the ability to close onto a fault and interrupt it safely.
The headline numbers: 160 A conventional free-air thermal current (Ith) at 40 °C, and a making capacity of 1600 A at 400 V AC-23B. The breaking capacity at 400 V AC-23B is 1280 A. AC-23B is the motor-switching duty class — it means this switch can handle occasional switching of motor loads (including inrush) plus the full range of resistive and mixed loads. If your BOM calls for a 160 A fused disconnect on a motor circuit fed from a 400 V line, the GS2L3 fits.
This is a plate-mount switch-disconnector — it's designed to bolt into a panel, not snap onto DIN rail. The power circuit terminals accept bars up to 20 mm² or ring lugs from 50 to 95 mm², with a tightening torque of 12 N·m. The operating handle can be mounted on the right side or front of the enclosure, which gives some flexibility in panel layout.