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BCFurnace
3" HIGH LIMIT SWITCH L155-30F 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 L155-30F 3 High Limit Control Switches

BCFURNACE

543-008

CA$68.83

+5% Tax • Shipping calculated at checkout.

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

Name

3" HIGH LIMIT SWITCH L155-30F

1units 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 3-inch high limit switch. Designed as a critical safety component for residential furnaces and HVAC units, this thermal limit control prevents the heat exchanger from overheating. When temperatures exceed the safe operating threshold, the switch automatically interrupts the electrical circuit to shut down the burners, protecting your equipment from damage. Once the unit cools down by the specified temperature differential, it resets to resume normal operation. This high-quality replacement part is essential for routine furnace maintenance and HVAC repairs, helping to maintain home safety while ensuring reliable performance throughout the heating season.

Specifications

Type
High Limit Control Switch
Size
3-inch probe length
Dimensions
3 in
Application
Commonly used in forced-air furnaces, HVAC systems, and heating equipment as a primary safety sensor to monitor heat exchanger temperatures and prevent thermal overload.
Specifications
Opening Temperature: 155°F; Closing Temperature: 125°F; Temperature Differential: 30°F; Circuit: Normally Closed (NC) opens on temperature rise.

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Frequently Asked Questions

Is the 543-008 a genuine OEM part?
Yes, the 543-008 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 543-008 is compatible with my BCFurnace furnace?
The easiest way is to match the part number (543-008) 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 543-008 shipped?
Most 3 Limit Switches including the 543-008 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 543-008 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 543-008 is in stock before visiting.

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