Supco Q104 2-Switch Heat Sequencer 30-90 Second On Timing 24V

The Supco Q104 is a field-proven Q Series electric heat sequencer designed for controlling the operation of heating elements and blower motors in electric, gas, and oil heat systems. This versatile HVAC control component features 2 switches with adjustable timing sequences to provide precise staging control for multi-element heating applications.

Key Specifications:

• Switch On Time: 30 to 90 seconds (adjustable)
• Switch Off Time: 1 to 30 seconds (adjustable)
• Control Voltage: 24V
• Contact Rating: 25A at 120/240 VAC, 12.5A at 480 VAC (resistive)
• Pilot Duty: 125 VA at 120-240 VAC, 480 VA at 480 VAC
• Configuration: DPST (Double Pole Single Throw), 2 switches
• Stage Delay: 5 second delay between subsequent stages

Features:

• UL Listed and CSA Certified for safety and reliability
• Direct replacement for most fan and heat sequencing functions
• Compatible with electric furnaces, gas furnaces, heat pumps, and oil furnaces
• Thermodisc construction for accurate temperature-based timing
• Replaces White Rodgers 24A34-4, Carrier HN67QC006, York 525-37325-000, and other OEM part numbers

This sequencer provides reliable staging control by using a heating element to create time delays, ensuring heating elements energize in sequence rather than simultaneously. The adjustable timing ranges allow for customization to match specific system requirements, while the 5-second inter-stage delay prevents electrical overload.