White-Rodgers 3L09-4 Heating Limit Control

White-Rodgers 3L09-4 Heating Limit Control is a dependable limit control for residential heating systems. This Therm-O-Disc Type 36T, board-mount unit provides precise open and close temperature control to protect your equipment.

Designed for broad voltage compatibility and reliable current performance, it supports 120/240/277 VAC (resistive) and 120/240 VAC (inductive) with strong ratings. The 3.12" length, board-mount design, and 1/2" bimetal disc ensure durable, easy installation in tight control panels. Ideal for heating control applications, it delivers dependable safety switching and long service life.

• Therm-O-Disc Type 36T (Style 612703) with 1/2" bimetal disc
• Board-mount configuration, 3.12" long for compact panels
• Voltage rating: 120/240/277 VAC (Resistive); 120/240 VAC (Inductive)
• Current ratings: 15A @ 120V; 13A @ 240V; 9.3A @ 277V (Resistive); 13A @ 240V (Inductive); 34.8A Locked Rotor @ 120V
• Temperature ratings: Open at 150°F; Close at 130°F; Panel setting L150-20F
• Power rating: 125 VA pilot duty