King Electric 3.3kW KBU PlatinumX Plenum Heater w/ 24V Control, 1 Ph, 480V

King Electric KBU4803-1-PLTMX
SKU KNG-KBU48031PLTMX
King Electric's 3.3kW KBU PlatinumX plenum heater is ideal for use in concealed areas of buildings. Rated for 1 phase, 480V installation and compatible with 24V and WiFi thermostats. Add this plenum heater to your HomElectrical.com cart now!
King Electric 3.3kW KBU PlatinumX Plenum Heater w/ 24V Control, 1 Ph, 480V

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King Electric's 3.3kW KBU PlatinumX plenum heater is ideal for use in concealed areas of buildings. Rated for 1 phase, 480V installation and compatible with 24V and WiFi thermostats. Add this plenum heater to your HomElectrical.com cart now!
cUL/UL Listed

  • 3.3kW; 11263 BTU/H.
  • 480V; 1 Phase.
  • Plenum rated for concealed spaces: for zero clearance to combustibles.
  • For freeze protection in difficult to reach areas.
  • NEMA 12 construction.
  • Approved for installations in concealed spaces.
  • Compact low-profile design.
  • Energy-saving PlatinumX electronic temperature controller.
  • Compatible with NEST/Any 24V thermostat, including WiFi stats.
  • Summer fan only and timer modes.
  • Axial fan.
  • Buit-in fan delay to dissipate heat.
  • High mass teel fin heat exchanger.
  • Automatic primary safety limit and manual-reset secondary safety limit with audible alarm.
  • Permanent lubricated unit bearing motor.
  • Low profile ceiling mount bracket included.

cUL/UL Listed

King Electric KBU4803-1-PLTMX Description

cUL/UL Listed

  • 3.3kW; 11263 BTU/H.
  • 480V; 1 Phase.
  • Plenum rated for concealed spaces: for zero clearance to combustibles.
  • For freeze protection in difficult to reach areas.
  • NEMA 12 construction.
  • Approved for installations in concealed spaces.
  • Compact low-profile design.
  • Energy-saving PlatinumX electronic temperature controller.
  • Compatible with NEST/Any 24V thermostat, including WiFi stats.
  • Summer fan only and timer modes.
  • Axial fan.
  • Buit-in fan delay to dissipate heat.
  • High mass teel fin heat exchanger.
  • Automatic primary safety limit and manual-reset secondary safety limit with audible alarm.
  • Permanent lubricated unit bearing motor.
  • Low profile ceiling mount bracket included.

cUL/UL Listed
Free Shipping
$3,555.77Each

Ships between 01/22/2026 - 02/06/2026

Product Specifications

Part NumberKBU4803-1-PLTMX
Air Flow (CFM)520
CertificatecUL/UL Listed
Electrical Phase1 Ph
Made in USAYES
MaterialSteel
Maximum Voltage480V
Warranty2 Yr
Product Dimensions17-in X 16.5-in X 15-in
Weight30.50-lb
UPC93319703335

Manufacturer Description

KBU PLATINUMX PLENUM HTR, 480V 3.3KW 1PH, 24V CONTROL
Prop65
Important PROP 65 InformationWarning: This product can expose you to chemicals, which are known to the State of California to cause cancer, birth defects, or other reproductive harm. For more information, go to www.p65warnings.ca.gov. to CA residents.
King Electric's 3.3kW KBU PlatinumX plenum heater is ideal for use in concealed areas of buildings. Rated for 1 phase, 480V installation and compatible with 24V and WiFi thermostats. Add this plenum heater to your HomElectrical.com cart now!
King Electric 3.3kW KBU PlatinumX Plenum Heater w/ 24V Control, 1 Ph, 480V
Free Shipping
$3,555.77Each

Ships between 01/22/2026 - 02/06/2026

King Electric KBU4803-1-PLTMX Description

cUL/UL Listed

  • 3.3kW; 11263 BTU/H.
  • 480V; 1 Phase.
  • Plenum rated for concealed spaces: for zero clearance to combustibles.
  • For freeze protection in difficult to reach areas.
  • NEMA 12 construction.
  • Approved for installations in concealed spaces.
  • Compact low-profile design.
  • Energy-saving PlatinumX electronic temperature controller.
  • Compatible with NEST/Any 24V thermostat, including WiFi stats.
  • Summer fan only and timer modes.
  • Axial fan.
  • Buit-in fan delay to dissipate heat.
  • High mass teel fin heat exchanger.
  • Automatic primary safety limit and manual-reset secondary safety limit with audible alarm.
  • Permanent lubricated unit bearing motor.
  • Low profile ceiling mount bracket included.

Product Specifications

Part NumberKBU4803-1-PLTMX
Air Flow (CFM)520
CertificatecUL/UL Listed
Electrical Phase1 Ph
Made in USAYES
MaterialSteel
Maximum Voltage480V
Warranty2 Yr
Product Dimensions17-in X 16.5-in X 15-in
Weight30.50-lb
UPC93319703335

Manufacturer Description

KBU PLATINUMX PLENUM HTR, 480V 3.3KW 1PH, 24V CONTROL
Prop65
Important PROP 65 InformationWarning: This product can expose you to chemicals, which are known to the State of California to cause cancer, birth defects, or other reproductive harm. For more information, go to www.p65warnings.ca.gov. to CA residents.

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