Lennox 74W77 Control-Limit 155 F (Each) 102135-12

Product Description

Lennox 74W77 is a control-limit (temperature limit) switch rated to open at 155 F and sold as part number 102135-12. The device functions as an HVAC safety/limit control for furnaces and air handlers and is offered as an OEM replacement (alternate model L155-30F). It is compact and lightweight, suitable for space-constrained control panels and limit-protection applications.

• Rated to open at 155 F for temperature limit and safety control
• OEM Lennox part MPN 74W77, alternate model L155-30F; manufacturer part 102135-12
• Single-pole double-throw (SPDT) contact; electrical rating up to 600 V AC and 10 A; IP67 enclosure

Product Highlights

OEM Lennox control-limit switch (MPN 74W77 / 102135-12), 155 F temperature rating, compact SPDT limit switch for HVAC safety and control

Product Information

Standard Information

• Brand: LENNOX
• Manufacturer Part Number: 74W77
• Country of Origin: United States

Technical Specifications

• Brand: Lennox
• MPN: 74W77
• Manufacturer Part Number: 102135-12
• Alternate Model Number: L155-30F
• Product Type: Control-limit (temperature limit switch)
• Temperature Rating: 155 F (opens at 155°F)
• Contact Configuration: Single-pole double-throw (SPDT)
• Operating Voltage: 600 V AC
• Current Rating: 10 A
• Enclosure Rating: IP67
• Country of Origin: United States