Tripp Lite
1111 W. 35th Street
Chicago, IL 60609
+1 (773) 869-1776
+1 (773) 869-1329

TAA-Compliant 1.9kW Single-Phase ATS/Switched PDU, 120V (16 5-15/20R) 2-L5-20P / 5-20P adapters, 12ft Cords, 1U Rack-Mount


Tripp Lite Switched ATS / Auto Transfer Switch provides a redundant power option for single-corded network devices. Dual input cords support separate connection to PRIMARY and SECONDARY power sources. The ATS will normally maintain continuous output to all outlets as derived from the primary input cable. If the primary power source becomes unstable or fails altogether, the ATS will switch over to the secondary power source until the primary input is restored and stable. Switched PDU features include individually controllable output receptacles and built-in network interface. Super-fast switchover between primary and secondary power sources occurs within milliseconds. ATS functionality is supported by any two compatible AC power sources, regardless of phase angle, to support a variety of advanced redundant power networking applications. Enables fault tolerant hot-swappable UPS protection when used with a single UPS and fully redundant UPS protection when each cord is connected to a separate UPS system. In a two-UPS environment, the primary input cable must be supported by a full time sine wave UPS with zero transfer time. Tripp Lite SmartOnline series is highly recommended for use as the primary UPS in a two-UPS application. ATS configurations utilizing separate mains circuits, backup generators and even separate utility power grid feeds are fully supported. On-board ATS processor constantly evaluates power quality on both input sources to prevent transfer to the secondary source when unavailable or of lower quality than the primary source. Front input LED's display primary or secondary power availability.


  • Federal Trade Agreements Act / TAA Compliant for GSA Schedule purchases
  • 120V 20A Power Distribution Unit (PDU) with Auto-Transfer Switch (ATS) and Switched outlets (Agency de-rated to 16A)
  • ATS features provide redundant power for critical network equipment with a single input power cord
  • Switched PDU features enable programmable or real-time control of individual outlets via built-in network interface
  • Visual meter reports output power consumption in amps
  • 16 switched NEMA 5-15/20R outlets; 1U horizontal rackmount form factor; 14.5 in. / 36.8 cm depth
  • Two NEMA L5-20P inputs (includes two 5-20P adapters) connect to separate PRIMARY and SECONDARY inputs
  • ATS normally maintains output sourced from the primary input; As primary input power fails or becomes unstable, the ATS will switch to power equipment from the secondary input until power on the primary input is restored and stable
  • ATS configurations enable hot-swappable UPS protection when used with a single UPS and redundant UPS protection when each input is connected to a separate UPS system (in a two-UPS environment, the primary input cable must be supported by an online UPS similar to Tripp Lite SmartOnline)
  • Advanced ATS configurations using separate mains circuits, backup generators and out of phase utility feeds are fully supported
  • On-board processor evaluates power quality on both inputs to prevent transfer to the secondary source when unavailable or of lower quality than the primary source
  • 2-7 millisecond transfer time between primary and secondary inputs
  • DHCP/Manual configuration support; Supports HTTP, HTTPS, PowerAlert Network Management System, SMTP, SNMPv1, SNMPv2, Telnet, SSH, FTP, DHCP, BOOTP, NTP protocols
  • Compatible with optional ENVIROSENSE temperature monitor
  • Outlets are factory programmed for sequential turn-on at 250 millisecond intervals as the PDU is first energized
  • Front panel LEDs confirm power availability on primary / secondary inputs and each output receptacle

Package Includes

  • TAA Compliant version of Tripp Lite PDUMH20ATNET
  • Detachable C19 to NEMA L5-20P 12 ft/3.6m secondary input cord
  • Two NEMA L5-20R to NEMA 5-20P plug adapters
  • Installable 1U mounting brackets
  • User manual with warranty information
TAA compliant RoHS compliant Electrical Contracting Products Innovation Awards Finalist


UPC Code037332136411
PDU TypeAuto-Transfer Switch; Switched
Maximum Input Amps20
Maximum Input Amps DetailsAgency de-rated to 16A continuous
PDU Plug TypeNEMA 5-20P; NEMA L5-20P
Input Cord Length DetailsBoth input cables are 12 ft / 3.6m - the cables each terminate to a L5-20P locking plug on the input side. Two included 6 inch plug adapters convert the locking plugs to NEMA 5-20P plugs
Input PhaseSingle-Phase
Output Capacity Details2.03kW (127V), 1.92kW (120V), 1.6kW (100V) / 20A total capacity (Agency de-rated to 16A); 16A max per outlet
Frequency Compatibility60 Hz
Output (VA)2400
Output Receptacles(16) 5-15/20R
Output Nominal Voltage100; 120; 127
Customized Load Management Receptacles  16 individually controlled load management receptacles
Front Panel LCD DisplayDigital display reports total PDU output current in amps
Front Panel LEDs16 front panel LEDs display power on - off status for each outlet, plus 2 LEDs for power status on each input line cord. Digital current meter display shows the amount of power consumption in amps for entire output of PDU.
Material of ConstructionSteel
Form Factors Supported1U rackmount
Minimum Required Rack Depth (inches)19.5
PDU Form FactorHorizontal (1U)
Shipping Dimensions (hwd / in.)5.40 x 20.70 x 22.90
Shipping Weight (lbs.)20.00
Unit Dimensions (hwd / in.)1.75 x 17.5 x 14.5
Unit Weight (lbs.)12.2
Relative HumidityUp to 95% (non-condensing)
SNMP CompatibilityYes, via pre-installled  SNMPWEBCARD . Provides remote monitoring, outlet control, and automatic power management configurations.
CertificationsTested to UL 60950 (USA, Canada), Class A (Emissions), NOM (Mexico), RoHS Compliant, TAA Compliant
Product Warranty Period (Worldwide)2-year limited warranty

Questions & Answers

More Q&As may be available on the PDUMH20ATNETAA model support page.

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Mon - Fri 8 AM - 5:30 PM CST
+1 (773) 869-1776

Mon - Fri: 8 AM - 5:30 PM CST
+1 (773) 869-1234

Tripp Lite
1111 West 35th Street
Chicago, Illinois 60609
United States

+1 (773) 869-1111 Main
1 773.869.1329 Fax

Business Hours
8 AM - 5:30 PM CST

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