The TeSys GS GS2GG4 is a 4-pole switch-disconnector-fuse rated for 63 A at 400 V AC-23B, with a breaking capacity of 500 A at 400 V (AC-23B) and a making capacity of 630 A at 400 V AC-23B. It accepts DIN fuse size 000 and mounts on a plate. The part is designed for isolating and protecting motor circuits and other industrial loads per IEC 60947-3.
The 63 A rating at 400 V AC-23A and AC-23B covers motor switching with frequent on-load operations. For DC loads, it handles 40 A at 440 V with 2 poles in series per phase. Rated operational power is 30 kW at 400 V, 40 kW at 500 V, and 55 kW at 690 V — matching common motor sizes for those voltage levels. The conventional free-air thermal current (Ith) is 63 A at 40 °C, confirming the 63 A rating is not a conditional figure. Short-circuit withstand is 10.6 kA, and the rated short-circuit making capacity (Icm) reaches 100 kA at 400 V when protected by gG fuses. The impulse withstand voltage (Uimp) is 8 kV, and insulation voltage (Ui) is 750 V AC.
The GS2GG4 is listed as obsolete by the manufacturer.
Mounts on a plate (not DIN rail). Dimensions are 168 mm wide, 118 mm high, 116.5 mm deep. Power circuit connections accept lugs or ring terminals from 10 to 25 mm², tightened to 3.2 N·m. The external left-side operating handle allows panel-door mounting. IP20 with terminal cover — suitable for enclosed panel use, not washdown environments.