8.5 sec. LRC; B-Circuit Soft Start For 32mm OD slip ring A-Circuit; For 32mm OD slip ring; VR-B193MA for Voltage Set A-Circuit; For 28mm OD slip ring; VR-B194L for Voltage Set Point: 15.0V; VR-B193MH for Voltage Set Point: 14.7V (Heavy Point: 14.2V Duty version); VR-B193ML for Voltage Set Point: 14.2V