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  • 18kVA / 18kW / 18,000 watt step-down isolation transformer converts 208 or 240V 60Hz to 120/240V split phase output
  • Supports hardwire input and output
  • Ideal means of converting UPS, utility, generator or other 208/240V input to 120/240V split phase
  • Supports 4U rackmount installation
  • 2-year limited warranty


The SU20KXFMRT4U step-down isolation transformer converts 208V or 240V input from any 60 Hz generator, utility or UPS high-voltage source to 240/120V output. 208V or 240V hardwire input connection and hardwire 240/120V output. Supports 4U rack-mount installation in 4-post racks with included brackets. Supports upright tower installation with 2-9USTAND (sold separately).


  • Step-down/isolation transformer converts 60Hz high voltage 208 or 240V input from generator, utility or UPS to 120/240V split phase output
  • 18kW watt power handling capacity with 240V input (output de-rates to 16kW with 208V input)
  • Hardwire input and output connections
  • Included mounting accessories support 4U installation in 4 post rack enclosures

Package Includes

  • SU20KXFMRT4U step-down, isolation transformer
  • 4 post rackmount accessories
  • Owner's manual with warranty information
RoHS compliant VMware ready application


UPC Code037332176608
Accessory TypeIsolation Transformer
Accessory ClassUPS Accessories
Nominal Input Voltage(s) Supported208V AC; 240V AC
Maximum Input Amps77
Input Connection TypeHardwire
Voltage Compatibility (VAC)208; 240
Output Capacity DetailsOutput capacity with 240V input is 18kVA / 18kW / 18,000 watts; Output capacity de-rates to 16kVA / 16kW / 16,000 watts with 208V input
Frequency Compatibility60 Hz
Output Nominal Voltage120, 240V AC
Material of ConstructionSteel
Form Factors SupportedRack/Tower (2U)
Shipping Dimensions (hwd / in.)12.50 x 23.00 x 34.50
Shipping Weight (lbs.)320.00
Unit Dimensions (hwd / in.)7.000 x 17.500 x 29.320
Unit Weight (lbs.)281.09
Relative Humidity0-95% (non-condensing)
Product CertificationsCSA (Canada); UL 1778
Product ComplianceRoHS
Product Warranty Period (Worldwide)2-year limited warranty

Questions & Answers

Services & Extended Warranties

Extended Warranty

Part Number Description
WEXT1S Extended Warranty and Technical Support for Select Products – KVM Switches
WEXT2S Extended Warranty and Technical Support for Select Products – KVM Switches
WEXT3S Extended Warranty and Technical Support for Select Products – KVM Switches

Need help with your purchase?
We're always available to help with questions, including product selection, sizing, installation and product customization. Call us at +1 773-869-1776 or email