Marley Engineered Products 4520-0011-000 Limit Switch but thermal expansion protection is

but thermal expansion protection is required

this regulator is the industry standard for hearth products and pilot line precision

or if the system displays a "limit circuit open" fault code

F) and terminated with a receptacle connection containing 0

Always verify your specific model number for HVAC part compatibility

Marley Engineered Products 4520-0011-000 Limit Switch but thermal expansion protection isThe Marley Engineered Products 4520 0011 000 Limit Switch is a high precision 300F CU AUTO limit switch engineered for critical thermal protection in industrial and commercial heating applications. As a veteran grade HVAC replacement part, this linear limit protector features an automatic reset mechanism that triggers at a 300F threshold to prevent equipment overheating and potential component failure. The 4520 0011 000 is built with a rugged copper