Replacement Sail Switch F.S.P Copper Lever

Description

Product Overview

The F.S.P Replacement Sail Switch is engineered as a direct replacement for Suburban SF20, SF25, SF30, SF35, SF42 and their furnace variants (SF20F‑SF42F). Constructed from high‑conductivity copper contacts and a robust hinge‑lever actuator, the switch operates automatically with a 10 A current rating. It features a screw‑type connector for secure panel mounting, a normally open contact design, and an IP00 protection rating suitable for indoor furnace environments.

Usage

Designed for residential heating systems and RV furnaces, this sail switch controls the ignition sequence of Suburban gas furnaces. Install it in the furnace control panel to replace a failed switch, restoring safe and efficient operation. Ideal for HVAC technicians, DIY homeowners, and RV owners who need a reliable, easy‑to‑install component.

Why Choose Us

F.S.P delivers OEM‑grade quality with precise tolerances that match the original equipment specifications. Each unit undergoes rigorous testing for contact resistance and mechanical durability, ensuring consistent performance over the furnace’s lifespan. Our parts are backed by a satisfaction guarantee and come with detailed installation instructions, reducing downtime and service costs.

Key Features

• Direct replacement for Suburban SF series furnaces, eliminating the need for adapters.
• High‑conductivity copper contacts provide reliable electrical performance.
• Automatic 10 A rating with normally open contact for safe ignition control.
• Panel‑mount screw connector ensures a secure, vibration‑resistant installation.
• Compact black housing (5.12 x 4.02 x 0.39 in) fits standard furnace control panels.

FAQ

Is this switch compatible with all Suburban furnace models?

Yes, it fits Suburban SF20, SF25, SF30, SF35, SF42 and their furnace variants (SF20F‑SF42F) as a direct replacement.

Do I need any special tools to install the switch?

Installation requires a screwdriver for the screw terminals and basic safety precautions; no additional tools are necessary.

What is the warranty on this product?

F.S.P offers a one‑year limited warranty covering defects in materials and workmanship.

Can this switch be used in outdoor or wet locations?

The IP00 rating indicates it is intended for indoor use only; it should not be exposed to moisture or outdoor conditions.

How does the automatic operation mode work?

When the furnace calls for heat, the switch automatically closes its contacts, allowing current to flow to the ignition system without manual intervention.