Mars 39040 MR210 Manual Reset Limit Switch 210°F

The Mars 39040 MR210 is a manual reset disc limit switch designed for HVAC applications requiring temperature-based safety control. This safety control is engineered to open on temperature rise at 210°F, providing critical over-temperature protection for furnaces and heating equipment.

Key Features:

• Manual reset operation ensures system cannot restart until manually inspected
• Opens on temperature rise at 210°F
• Disc-type limit switch design for reliable operation
• Universal compatibility with most HVAC systems
• Also known as part number Z03V

This manual reset limit switch serves as an essential safety device in heating systems. When temperatures exceed the 210°F threshold, the switch opens the circuit and must be manually reset, preventing automatic restart until the cause of overheating is identified and corrected. Ideal for replacement applications in residential and commercial furnaces.