TJERNLUND High Limit Switch: Mfr Part # 950-0640
SKU 3G-OTH-77708
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Frequently Asked Questions
What is a TJERNLUND High Limit Switch used for?
A TJERNLUND High Limit Switch is a safety device used in HVAC systems to shut down equipment if temperatures exceed a safe threshold. It protects furnaces, boilers, and exhaust fans from overheating, preventing damage and fire hazards. This replacement part is critical for maintaining safe operation in residential and commercial heating applications.
What are the specifications of the TJERNLUND High Limit Switch 950-0640?
The TJERNLUND High Limit Switch, manufacturer part number 950-0640, is a replacement HVACR control classified as a high limit switch. It is designed to interrupt power when temperature limits are exceeded. For exact temperature ratings and electrical ratings, consult the product datasheet or contact 3G Electric for detailed specifications.
Where to buy a TJERNLUND High Limit Switch 950-0640 worldwide?
You can source the TJERNLUND High Limit Switch 950-0640 from 3G Electric, a global industrial equipment distributor. We handle full logistics, customs clearance, and delivery to worldwide destinations. Contact us for availability and lead time; we provide this replacement HVACR control to customers across multiple industries.
How to install a TJERNLUND High Limit Switch?
To install a TJERNLUND High Limit Switch, first disconnect power to the HVAC system. Remove the old switch, noting wiring connections. Mount the new switch in the same location, reconnect wires per the manufacturer's diagram, and restore power. Always follow local electrical codes and consult a qualified technician if unsure.
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3G Electric supplies TJERNLUND replacement hvacr controls, switches & thermostats. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.













