Angled view of barrel fan motor with capacitor.
Left side profile view of XE421 showing wiring with terminal clips.
Right side profile view of vented motor.

Motor for 30 In. Drum Fans with Small Diameter Bolt Pattern

Regular price$111.54
Shipping calculated at checkout.

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This 2 speed direct drive motor is for indoor use only and is easily rewired to your existing fan switch using the pre-installed terminal clips.

For use only with Maxx Air 30 in. direct drive drum fans, bolt pattern with diameter - diagonal 4.625 inch, square 3.275 inch. This motor is compatible with fan models beginning in BF30DD that use a Kulthorn brand BRE421 motor.


2 speed operation


Suitable for indoor usage

Energy Efficiency:

Energy efficient design

Other Features:

Reference numbers: BRE 421, KDE3H4705, D-RE-PSC-139/25-8P2SP-1/3HP

Primary Color


Motor Details

2-Speed Thermally Protected, Direct Drive PSC Motor

Motor Specs
ModelHPAmpsV, HzWattsRPM
XE4211/3Rated at 5.2
Draws 5.2 / 4.05
120 V
60 Hz
Input: 412 Low, 550 High
Output: 86 Low, 197 High
600 Low
825 High

XE421: 5 in. H x 5 in. W x 7.8 in. D (including shaft)

Unit Weight

11 lbs.

Box Dimensions

12 in. H x 10.5 in. W x 10.5 in. D

Ship Weight

12 lbs.

Alias SKU(s)

XE421: Small diameter, replacement unit 

Single Product UPC


Sold Under

Maxx Air

Our products are shipped via Fedex Ground or LTL Carrier depending on the size and weight of the product. Should you have a special requirement for shipping please contact us at or call us to discuss your requirements. You can use the Freight Estimator in the Shopping Cart to determine what the freight cost will be on your item. Freight will be billed at the time of shipment. Due to the nature of the products, we cannot ship via Express or overnight service. Typically orders ship within 5 business days. Upon shipment you will be sent a notification of shipment with the Tracking Number. We reserve the right to recall a shipment for any reason.

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