King Electric KB Unit Heater with Bracket & Thermostat, 20 kW, 480V, 1 or 3 Phase

King's KB series unit heaters are designed for use as primary or supplemental heat sources in large or exposed areas, including high-rise buildings, stores, warehouses, garages, water treatment and fire room vaults to prevent freezing. Spiral finned steel elements and high CFM ensure even air distribution producing cooler element operation, prolonging heater life. By combining the highest quality components, with a dynamically balanced fan blade and in-built thermostat, the KB unit heater will provide years of trouble-free service. Includes universal wall/ceiling bracket for simple installation. Features: Adjustable Louvers to Direct AirBuilt-In Fan Delay to Dissipate HeatBuilt-In ThermostatHigh Mass Steel Fin Heat ExchangerPatented Smart Limit Protection Permanent Lubricated Unit Bearing MotorUniversal Wall/Ceiling Bracket IncludedProudly Made in the USA with U.S. & Global MaterialsDecades of Reliability: By combining the highest quality components, with a dynamically balanced fan blade and in-built thermostat, the KB unit heater will provide years of trouble-free serviceConstruction: All exterior and interior metal enclosure parts are made from 20 gauge electro galvanized Steel with a rust inhibiting baked enamel finish. Smooth rounded corners and protective edge trim give an attractive modern appearanceAdjustable Outlet Louver: Louvers direct air up or down as needed for the heating applicationRear Intake Screen: Heavy gauge steel screen protects against foreign objects making accidental contact with the rotating fan bladeSpiral Fin Elements: The metal sheath element is copper brazed with spiral fins then molded into a coil configuration. This combination produces the best heat transfer while eliminating the potential for hot spots by positioning the element in the maximum airflow streamTotally Enclosed Fan Motor: Permanently lubricated long life, unit bearing with 20cc of oil. Epoxy-coated motor with enclosed rotor resists moisture and corrosion for long-lasting, trouble-free operationAluminum Fan Blade: Axial flow-type fan mounted directly to the motor shaft for maximum efficiencyBuilt-In Thermostat: Single pole factory installed hydraulic capillary tube thermostat for precision heating control. Operating range 40 to 90 Manual Thermal Cutout: Heaters shall be equipped with King's patented thermal overload Smart Limit Protection , which disconnects elements and motor in the event normal operating temperatures are exceeded. If thermal overload trips due to abnormal operating temperatures, thermal overload shall remain open until manually reset by turning the heater off for 15 minutes. Automatically reset of thermal overloads, which allow the element to continue to cycle under abnormal conditions, will not be acceptedInternal Controls: Magnetic contactors are standard on all 480V heaters, all 208V/1-Phase, 240V/1-Phase, 277V/1-Phase heaters above 6kW, and all 3-Phase heaters. The control voltage is equal to the line voltage (208, 240 or 277) except for 480V models where a transformer is provided for 24V control. Over 5kW the line voltage control is operating the contactor coil only and will draw only 1 AmpFusing: Internal circuit fusing is provided when the heater ampacity exceeds 48 Amps to comply with N.E.C. standards. A fan delay is provided standard on models 12.5-kW and above to dissipate residual heat from the heating elements5 Year Limited Warranty.