Allied Air 102857-03 Control-Limit 140F (71W43 Replacement)

Product Description

The Allied Air 102857-03 is a control-limit switch (alternate part 71W43) set to open at 140 F to protect furnace operation. It functions as a temperature-actuated safety device for HVAC systems, interrupting the circuit when the set point is reached. The unit is lightweight (0.05 lb) and intended as an OEM replacement for Allied Air and compatible Ducane/Lennox furnaces, providing temperature-based open/close control.

• Set temperature: 140 F trip point for furnace overtemperature protection
• OEM replacement compatible with Allied Air item 71W43 and Ducane/Lennox furnace applications
• Lightweight (0.05 lb) limit control switch designed for temperature-actuated open/close operation

Product Highlights

Temperature-actuated limit switch for furnace safety; opens at 140 F; OEM replacement (71W43 / 102857-03).

Product Information

Standard Information

• Brand: ALLIED AIR
• Manufacturer Part Number: 102857-03