Trane RSS495011 Adjustable Air Pressure Switch Kit Spdt

Product Description

The TRANE RSS495011 is a universal SPDT adjustable air pressure sensing switch kit rated for a sensing range of 0.25 to 1.0 inches water column (WC). This switch monitors differential air pressure within HVAC systems and actuates an electrical circuit when pressure crosses the set point. It is used to verify airflow, detect blocked filters or flue obstructions, and protect equipment from operating outside safe pressure parameters. Licensed HVAC technicians install this device as part of furnace, air handler, and ventilation system control circuits.

This switch kit is suited for residential and light commercial HVAC applications where a single-pole double-throw pressure sensing device is required. The adjustable set point allows one part to cover a range of installations and system configurations. Typical uses include proving inducer draft, monitoring supply or return air pressure, and serving as a safety interlock within low-voltage control circuits.

Key Features

• Adjustable sensing range of 0.25 to 1.0 inches water column (WC)
• SPDT switching action provides both normally open and normally closed circuit paths
• Universal kit design covers a broad range of residential and light commercial HVAC applications
• Serves as a safety interlock for inducer draft proving and airflow verification
• Kit format includes switch and associated mounting or connection components

Compatibility

Designed as a universal OEM-style replacement air pressure sensing switch for residential and light commercial HVAC systems requiring an adjustable SPDT differential pressure switch in the 0.25 to 1.0 inches WC range.

Installation Notes

Installation is performed by a qualified HVAC technician. Disconnect all power to the unit before servicing the control circuit or replacing any pressure switch. Tubing connections to the pressure ports must be secure and free of cracks or kinks that could affect sensing accuracy. Follow all applicable local codes and manufacturer wiring diagrams when connecting the SPDT terminals to the control board.

Technical Specifications

• Switch Type: SPDT (Single-Pole Double-Throw)
• Pressure Sensing Range: 0.25 to 1.0 inches water column (WC)
• Adjustment: Adjustable set point
• Application: Universal air pressure sensing

Standard Information

• Brand: TRANE
• Manufacturer Part Number: RSS495011