1-778-759-9864
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BCFurnace
3" HIGH LIMIT SWITCH L240-40F 3 High Limit Control Switches furnace part available in Vancouver, Burnaby, Port Moody, Langley, North Vancouver, Richmond, Maple Ridge, Delta, West Vancouver, New Westminster, Surrey, Coquitlam, Port Coquitlam, Pitt Meadows

3" HIGH LIMIT SWITCH L240-40F 3 High Limit Control Switches

BCFURNACE

543-235

CA$70.19

+5% Tax • Shipping calculated at checkout.

U.S. Duties/Taxes, if applicable, may be due at time of delivery.

Name

3" HIGH LIMIT SWITCH L240-40F

3units available

Pickup available at 75 Blue Mountain St #3

Usually ready in 24 hours

Secure Payment
Fast Delivery
Local Pickup

Product Details

Description

Ensure the safety and efficiency of your heating system with this professional-grade 3-inch high limit control switch. As a vital safety component for residential furnaces and HVAC units, this sensor monitors internal temperatures to prevent the appliance from overheating. The switch is designed to automatically interrupt the heating cycle if the temperature exceeds a specific safety threshold, protecting your equipment from potential damage and ensuring a safe operating environment. Perfect for HVAC repairs and preventative maintenance, this thermal limit control is built for reliability and long-lasting performance in forced-air heating systems. Its standard 3-inch profile allows for precise heat detection within the plenum, making it an essential replacement part for maintaining optimal furnace functionality and home safety.

Specifications

Type
High Limit Control Switch
Size
3-inch
Dimensions
3 in
Application
Used primarily in gas and electric furnaces, HVAC systems, and forced-air heating units to monitor plenum temperature and provide over-temperature protection.
Specifications
Switching Logic: Normally Closed (NC); Open Temperature: 240°F; Close Temperature: 200°F (40°F Differential); Mounting: 3-inch insertion depth; Function: Opens on temperature rise for safety shutdown.

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Frequently Asked Questions

Is the 543-235 a genuine OEM part?
Yes, the 543-235 is a genuine OEM replacement part manufactured by BCFurnace. We source all 3 Limit Switches from authorized distributors to ensure exact-fit compatibility. This 3 Limit Switches is backed by our 100% compatibility guarantee — if it doesn't fit your furnace, we'll make it right.
How do I know if the 543-235 is compatible with my BCFurnace furnace?
The easiest way is to match the part number (543-235) with your furnace model number. Visit the BCFurnace page on our site and enter your model number in the search bar — our system will show all compatible 3 Limit Switches for your specific unit. You can also call our technicians at 1-778-759-9864 for free compatibility verification.
How fast can I get the 543-235 shipped?
Most 3 Limit Switches including the 543-235 ship within 1–2 business days from our warehouse. We ship across Canada and the United States with tracking on every order. For urgent BCFurnace repairs, contact us at 1-778-759-9864 for expedited shipping options.
Can I pick up the 543-235 at your store?
Yes! Local pickup is available at our Coquitlam, BC location: 75 Blue Mountain St #3. 3 Limit Switches orders are usually ready within 24 hours. Call us at 1-778-759-9864 to confirm the 543-235 is in stock before visiting.

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