What the 13-18 A Rating Means for Fit
The GV2M20S: The 13-18 A thermal setting covers the full-load current range of small three-phase induction motors — typically 3 kW to 4 kW at 400 VAC. That's the setting you dial in on the front dial to match the motor nameplate FLA. If your motor draws 14 A FLA, this breaker is a direct fit; if it draws 12 A or 19 A, step down to the GV2M14 or up to the GV2M21.