White-Rodgers 3L09-10 Heating Limit Control

The White-Rodgers 3L09-10 Heating Limit Control is a compact, reliable limit control designed for heating systems. Built around a Therm-O-Disc Type 36T, Therm-O-Disc Style 612718, this board-mount device measures 3.12 inches in length and uses a 1/2 inch bimetal disc for precise temperature control.

It supports mixed voltage configurations for diverse installations, including 120/240/277 VAC (resistive) and 120/240 VAC (inductive), with current ratings up to 15 A at 120 V and 13 A at 240 V (inductive variants). It also lists a 125 VA pilot duty, and a temperature range of opening at 200°F and closing at 160°F, with the panel setting L200-40F.

Designed for durability and easy integration, this limit control features a robust mounting configuration and reliable Therm-O-Disc actuation to minimize nuisance trips. The board-mount design simplifies installation in control panels, while the bimetal disc provides steady, repeatable performance across temperature cycles.

• Application: Heating limit control with board mounting for HVAC and appliance systems
• Electrical Compatibility: 120/240/277 VAC (resistive) and 120/240 VAC (inductive)
• Electrical Ratings: 15 A @ 120 V; 13 A @ 240 V (inductive); 9.3 A @ 277 V (resistive); 125 VA pilot duty
• Temperature Range: Open at 200°F; Close at 160°F; panel setting L200-40F
• Physical Specs: Length 3.12 in; 1/2 in bimetal disc; Therm-O-Disc Type 36T; Style 612718