Product Description

The Honeywell L4029E10031 is a manual-reset limit control switch designed to enhance safety in HVAC systems. It functions as a fire-stat, automatically interrupting the fan operation when the air temperature in ducts reaches a critical level, thereby preventing the spread of fire through the ventilation system. This device features a fixed 165°F temperature setting and a 3-inch insertion length, making it suitable for various heating and ventilation applications. Its internal snap-acting switch, actuated by a bimetal strip, responds swiftly to temperature changes, ensuring reliable performance.

Technical Specifications

• Model: L4029E10031
• Temperature Setting: Fixed 165°F
• Insertion Length: 3 inches
• Switch Type: Single Pole Single Throw (SPST), Normally Closed
• Switch Action: Opens on temperature rise
• Reset Type: Manual
• Electrical Ratings (Full Load):
• 2 A @ 30 Vac
• 10 A @ 120 Vac
• 5 A @ 240 Vac
• Electrical Ratings (Locked Rotor):
• 60 A @ 120 Vac
• 30 A @ 240 Vac
• Pilot Duty Rating: 0.25 A @ 0.25 to 12 Vdc
• Maximum Ambient Temperature:
• Switch: 190°F
• Sensing Element: 350°F
• Dimensions: 3-3/4" H x 2-5/16" W x 2" D
• Mounting Orientation: Vertical
• Approvals:
• Underwriters Laboratories Inc. Listed: File No. MP466, Vol. 8, Guide No. MBPR2
• Canadian Standards Association Certified: File No. LR95329-5​