Single-Phase Auto Transfer Switch / Metered PDU, 1.9kW 20A 120V, 1U Horizontal Rackmount, 16 5-15/20R outlets, 2 L5-20P / 5-20P adapters

Model Number: PDUMH20AT


  • Single phase 20A 120V Auto Transfer Switch / ATS PDU
  • Enables redundant-power option for single-corded network devices
  • Separate primary & secondary inputs connect to any two compatible power sources
  • 1U horizontal rackmount; 2 NEMA L5-20P / 5-20P inputs; 16 5-15/20R outlets
  • Two digit visual current meter; Upgrade options available

Tripp Lite Metered 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. 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.

Key Features

  • 120V 20A Automatic Transfer Switch (ATS) / Metered PDU (Agency de-rated to 16A continuous)
  • Provides a redundant power option for critical networking equipment with a single input power cord
  • 2 digit display reports output power consumption in amps
  • 1U horizontal rackmount form factor; 14.5 in. / 36.8 cm depth
  • 16 built-in NEMA 5-15/20R outlets (8 front / 8 rear)
  • Set of two 12 ft. / 3.6m NEMA L5-20P input cables with set of two 5-20P adapters support connection to separate PRIMARY and SECONDARY inputs
  • ATS circuits normally maintain output sourced from the primary input cable; As primary input power fails or becomes unstable, the ATS will switch to maintain output sourced from the secondary input cable until power on the primary input is restored and stable
  • ATS configurations enable 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 an online UPS with zero transfer time similar to Tripp Lite SmartOnline series)
  • Advanced ATS configurations utilizing separate mains circuits, backup generators and even separate out of phase utility power grid feeds are fully supported
  • On-board ATS processor constantly evaluates power quality on both inputs to prevent transfer to the secondary source when unavailable or of lower quality than the primary source
  • Super-fast switchover between primary and secondary power sources occurs in 2-7 milliseconds
  • Built-in card slot supports optional SNMPWEBCARD for permanent upgrade to a switched & monitored PDU system
  • Outlets are factory programmed for sequential turn-on at 250 milliscond intervals when the PDU is first energized to prevent inrush-related equipment interaction on startup
  • Front panel LEDs confirm power availability on both input lines
  • TAA Compliant Version Available - Order Tripp Lite PDUMH20ATAA

Typical Applications

  • Ideal means to provide single-corded network gear a redundant power option

Package Includes

  • PDU with attached L5-20P primary input cord
  • Detachable C19 to NEMA L5-20P secondary input cord
  • Set of two L5-20R to 5-20P plug adapters
  • 1U mounting brackets
  • User manual with warranty information

OVERVIEW

PDU Type Auto-Transfer Switch; Metered

OUTPUT

Output Capacity Details 1.9kW (120V input), 2.0kW (127V input), 1.6kW (100V input); 20A maximum (Agency de-rated to 16A continuous)
Frequency compatibility 60 Hz
Output VA 2400
Output nominal voltage 100-127V nominal, single phase
Outlet quantity / type 16 NEMA 5-15/20R
Outlet Type NEMA 5-15R, NEMA 5-20R

INPUT

PDU Input Voltage 100; 120; 127
Maximum Input Amps (A) 20
Maximum Input Amps (A) Details Agency de-rated to 16A maximum
PDU Plug Type NEMA 5-20P; NEMA L5-20P
Input cord length details Both 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
Phase Single-Phase

LEDS ALARMS & SWITCHES

Front panel LEDs 16 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 total load consumption of connected equipment in amps

PHYSICAL

Shipping Dimensions (HWD/in) 6.25 x 22.5 x 23.5
Shipping Dimensions (HWD/cm) 15.9 x 57.2 x 59.7
Shipping weight (lbs) 16.4
Shipping weight (kg) 7.4
Unit Dimensions (HWD/in) 1.75 (1U) x 17.5 x 14.5
Unit Dimensions (HWD/cm) 4.44 x 44.4 x 36.8
Unit weight (lbs) 12.2
Unit weight (kg) 5.5
Material of construction Steel
Style Rackmount
Form factors supported 1U rackmount
PDU Form Factor Horizontal (1U, 2U, etc)

ENVIRONMENTAL

Relative Humidity Up to 95% (non-condensing)

COMMUNICATIONS

SNMP compatibility Includes slot for optional SNMPWEBCARD accessory to enable remote individual outlet control over IP

SPECIAL FEATURES

Appearance Black 1U rackmount steel chassis

CERTIFICATIONS

TAA Compliant Option TAA Compliant Version Available - Order Tripp Lite PDUMH20ATAA
Certifications Tested to UL 60950 (USA, Canada), Class A (Emissions), NOM (Mexico), RoHS Complaint

WARRANTY

Product Warranty Period (Worldwide) 2-year limited warranty

† Tripp Lite uses primary and third-party agencies to test its products for compliance with standards. See a list of Tripp Lite's testing agencies.

PDUMH20AT 4 5 5 5
Test Results I've done extensive tests on this switch in order to compare and recommend the best solution for our single cord devices in data centers. The switching time of this product is unbelievable! Even with totally out of phase inputs. The only thing that I do like that this switch had is preferred source selection button in front panel which gives more flexibility. April 8, 2014
Strange Detachable Cord Hi I have received my order from one of our suppliers and after opening the box I found out that the second source cord is strangely detachable! As long as this product is supposed to service the critical single corded IT loads, I could not figure out the reason for making it so! The other feature which a couldn't find was the ability to change between primary and secondary sources without rewiring and make outage to the loads! I have found other manufactureres products more expensive but with better features! January 3, 2014
just replaced a failing APC with two of these. Could not ask for anything better. alot cheaper than APC and does the same thing June 18, 2012
Great product at a great price, can not ask for much more! We have used these for a few years now with no complaints. May 18, 2012
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Input voltage

Your some 120VAC models can work with input of 220VAC. Can we use this PDUMH20AT with input of 220VAC?
2 years, 7 months ago
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Answer: 
Thanks for your query. The PDUMH20AT will only operate at 120VAC (via 2 x NEMA L5-20P AC plugs). Instead, consider utilizing our PDUMH20HVATNET (via 2 x IEC-320-C20 AC inlets) for operation from 200V-250V at 20A: http://www.tripplite.com/en/products/model.cfm?txtModelID=4500 .
2 years, 7 months ago
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There is no information about short circuit protection of the device and its function during fault conditions. Please provide me the details.
 
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2 months, 4 weeks ago
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Answer: 
Here's a link to the owner's manual on the PDUMH20:
http://www.tripplite.com/shared/techdoc/Owners-Manual/932857.pdf

Page 10 under 4.1B you'll find the Automatic Transfer Switch Source Selection.

For additional info please reach out to our UPS Applications team at 773-869-1236 or UPSApplications@tripplite.com.
2 months, 3 weeks ago
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2 weeks, 3 days ago
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John
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Answer: 
Typically for questions like this we suggest reaching out to our UPS Applications team.

The number is 773-869-1236 and email is upsapplications@tripplite.com.

This team will be able to discuss the application with you and make sure this is the right fit.
2 weeks, 2 days ago
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