The A11 Series Low Temperature Cutout Controls are available with single-pole, single-throw (SPST) or single-pole, double-throw (SPDT) contact action. Applications include the sensing of low temperature conditions to avoid over cooling or icing of hydronic coils, cooling coils, and liquid-handing pipes. The controls are compact and sturdy, and have an adjustable temperature setpoint range with a fixed differential. You can access the range adjustment screw at the bottom of the control, or at the top of the control when you remove the cover.
Figure 1. A11 Series Low Temperature Cutout Control