Vulcan
Vulcan VFT38-3B 240 V 3 000 W finned tubular air duct heater
A 3,000 W finned tubular air duct heater for 240 V single-phase systems, flange-mounted with an over-temperature thermostat and a minimum 600 cfm airflow requirement
- 240 V single-phase power enables straightforward electrical installation
- 3 kW output with three steel-sheathed elements delivers strong duct heating
- 600 cfm minimum airflow ensures safe and efficient heat transfer
- Built-in over-temperature thermostat provides automatic safety protection
- Flange-mount design allows secure integration into ductwork
Product identity
The Vulcan VFT38-3B is a finned tubular air duct heater rated for 240 V AC single-phase supply. It delivers 3 000 W of heating power through three steel-sheathed elements mounted on a galvanised steel flange. The unit requires a minimum duct depth of 8 in and an element width of 6 in for installation. An over-temperature thermostat is included for safety shut-off.
Sustained load behaviour
Continuous operation is supported when the duct maintains at least 600 cfm of air flow across the elements. The magnesium oxide insulation and nickel chromium wire construction allow the heater to hold steady output without short-cycling, provided the minimum flow rate is met. If air flow drops below the required level, the over-temperature thermostat will interrupt power to protect the elements.
Thermals noise and power
The heater draws 3 000 W at 240 V during normal use and converts virtually all input energy into heat within the air stream. No moving parts are present, so acoustic output is limited to air-flow noise from the duct system itself. The steel sheath and flange remain hot while powered, so clearances and insulation must follow the installation requirements for galvanised steel ductwork.
Highlights
- 240 V single-phase power enables straightforward electrical installation
- 3 kW output with three steel-sheathed elements delivers strong duct heating
- 600 cfm minimum airflow ensures safe and efficient heat transfer
- Built-in over-temperature thermostat provides automatic safety protection
- Flange-mount design allows secure integration into ductwork
Specifications
| Brand | VULCAN |
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Questions about this item
How much noise and heat does the 3,000 W finned tubular heater add when running continuously in an 8-inch duct?
The steel-sheath elements with magnesium-oxide insulation operate silently; heat output matches the 3,000 W rating and is carried away by the required 600 cfm minimum airflow.
What electrical supply and duct dimensions must already exist for the flange-mount VFT38-3B to install and run?
A 240 V AC single-phase circuit and a duct at least 8 inches deep with a 6-inch wide opening for the three-element flange are required.
Will the built-in over-temperature thermostat protect older ductwork if airflow drops below 600 cfm?
Yes, the included over-temperature thermostat cuts power automatically if the heater sheath overheats due to insufficient airflow.
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