Supco SHL505 L140-40 Plenum Limit Thermostat for Gas Furnaces

The Supco SHL505 is a bi-metal plenum limit thermostat designed for use as a high-limit control in gas furnaces and HVAC heating systems. Part of Supco's reliable SHL Series of ½-inch bi-metal temperature controls, the SHL505 automatically opens the circuit when plenum temperatures reach a dangerous high, and resets automatically once temperatures return to safe levels.

Key Specifications:

• Switch Type: SPST (Single Pole, Single Throw)
• Switch Action: Open on Rise
• Opens (Trip Temperature): 140°F
• Closes (Reset Temperature): 100°F (40°F differential)
• Input Voltage: 120V AC / 240V AC
• Resistive Rating: 15A at 120V AC / 10A at 240V AC
• Inductive Rating: 3A Full Load / 12A Locked Rotor at 120V AC; 1.5A Full Load / 6A Locked Rotor at 240V AC
• Pilot Duty: 125 VA at 120V and 240V AC
• Reset Type: Automatic
• Overall Width: 1.88 in
• Overall Height: 2.80 in
• Insertion Length: 1.87 in
• Also Known As: L140-40 Limit Switch / Thermodisc

The SHL Series bi-metal design provides proven reliability in a compact and cost-effective package, making the SHL505 a dependable replacement limit control for residential and light commercial gas furnace applications.