Trane swt01159 Fan Status Switch 15A 120-480V

Product Description

The TRANE swt01159 is a fan status switch designed to verify airflow in HVAC systems by detecting differential pressure across the air handler or blower section. Rated for 15 amps at 120 to 480 volts and 60 Hz, this switch operates reliably across a wide temperature range of 32 to 180 degrees F. It activates at a pressure differential of 0.07 inches water column, confirming that the supply fan is moving air before allowing downstream components to energize. Licensed HVAC technicians install this switch as part of fan proving and interlock circuits in commercial and residential equipment.

The swt01159 is suited for use in forced-air HVAC systems where fan status verification is required by the control sequence. Typical applications include air handling units, rooftop units, and split systems where the control board or DDC system needs proof-of-airflow before energizing heating or cooling stages. Its wide voltage rating makes it compatible with both single-phase and three-phase equipment operating at 120, 208, 240, or 480 volts at 60 Hz.

Key Features

• Detects airflow via 0.07 inches water column differential pressure setpoint
• Wide voltage range of 120 to 480 volts covers single-phase and three-phase applications
• 15-amp contact rating handles typical HVAC control and interlock loads
• Operating temperature range of 32 to 180 degrees F suits both indoor and mechanical-room installations
• 60 Hz rated for standard North American HVAC equipment

Compatibility

Designed as an OEM-style replacement fan status switch for TRANE HVAC equipment requiring a 15-amp, 120-480 volt differential pressure proving switch with a 0.07 inches water column activation point.

Installation Notes

Installation should be performed by a licensed HVAC technician. Disconnect and lock out all power to the unit before removing or installing the switch. The switch is typically tapped into the supply-air plenum or duct and wired into the fan interlock circuit per the equipment wiring diagram and applicable NEC requirements. Do not over-tighten pressure port fittings, and verify tubing connections are secure and free of kinks before restoring power.

Technical Specifications

• Amperage: 15 amps
• Voltage: 120-480 volts
• Frequency: 60 Hz
• Temperature Range: 32-180 degrees F
• Activation Pressure: 0.07 inches water column

Standard Information

• Brand: TRANE
• Manufacturer Part Number: swt01159