Protactor Electric Furnace Sequencer - Three Switches | Universal Replacement

Overview

The Protactor Electric Furnace Sequencer with three switches is designed as a versatile replacement for a wide range of electric furnaces that use three heating elements. It coordinates three elements along with the blower, helping the system start smoothly and wind down in a controlled fashion. The M1 and M2 terminals engage first and stay closed to keep the blower active until the elements have adequately cooled, contributing to orderly operation and protection of components.

What it does

Key capabilities drawn from the product data include:

• Three-switch sequencing that controls three furnace elements plus the fan
• 1/4" quick-connect terminals labeled M1 through M6 for streamlined wiring
• Bottom terminals dedicated to the 24-volt control circuit
• Low-voltage terminals feature removable jumper bars for flexible setup

Compatibility and use cases

As a universal replacement, this sequencer is commonly used in electric furnaces that originally employed a triple-stack sequencing solution. It is designed to fit a variety of brands and part numbers, serving as a practical swap when the original module fails or becomes unreliable. It is often used on 15 kW furnaces where a reliable three-element control is needed.

• Replaces triple-stack sequencers used by many manufacturers
• Widely compatible with models from Coleman Evcon, York Luxaire, Goodman Amana/Janitrol, Rheem, Ruud Weatherking, and Emerson White Rodgers
• Listed as a replacement for several S-series and related parts in mid-to-large electric systems

Warranty and purchasing confidence

This Protactor part is covered by a two-year replacement policy. If the unit fails within two years of purchase, you can arrange a replacement through the authorized Protactor dealer from whom you bought the part, with a copy of the original invoice. The part is supplied by OneTrip Parts and is designed to meet or exceed original equipment specifications.

Notes on installation and planning

Expect straightforward wiring with 1/4" quick-connects. Some low-voltage jumper bars may be removed if your wiring configuration requires it. Always confirm compatibility with your furnace model and follow standard electrical safety practices when replacing control modules. This description summarizes the information provided by the manufacturer and your dealer for informed decision making.