HS24A345 DPDT-SPST Heat Sequencer (2 Timings, 3 Switches)

The HS24A345 Heat Sequencer is a reliable HVAC control component designed to stage electric heating elements and blower motor operation in electric furnaces and air handlers. Featuring DPDT-SPST switching with three switch sets and two timing functions, this sequencer provides controlled startup and shutdown of heating circuits, reducing electrical stress while maintaining efficient system performance.

Commonly used as a replacement for worn or failed OEM heat sequencers in residential and light commercial electric heating systems.

Features

• DPDT-SPST configuration
• 3 switching circuits
• 2-stage timing operation
• Helps prevent excessive inrush current
• Designed for electric furnace and air handler applications
• Durable, dependable HVAC replacement part
• OEM-quality performance
• Easy replacement for compatible sequencers

Technical Notes

• Part Number: HS24A345
• Switch Configuration: DPDT-SPST
• Number of Switches: 3
• Timing Functions: 2 Timing Sequences
• Application: Electric furnaces, heat strips, air handlers
• Function: Sequential energizing and de-energizing of heating elements and blower circuits
• Installation should be performed by qualified HVAC personnel.
• Verify timing and terminal configuration before replacement.

Cross Reference

Compatible replacements for various OEM and aftermarket heat sequencers. Always verify electrical ratings, timing specifications, and terminal layout before ordering.

• HS24A345
• Heat Sequencer DPDT-SPST 3 Switch
• Electric Furnace Heat Sequencer
• HVAC Sequencer Replacement