48V DC, 3000 Watt, Rackmount Power Inverter, 2RU by Newmar Powering the Network

3000 Watt Rackmount DC-AC Inverter

This power inverter provides seamless back-up power for AC powered communications equipment from the site’s 48V DC battery system. A fast-acting transfer switch ensures voice and data transmissions remain uninterrupted in the event of a power grid failure or if the site utility power is disconnected for maintenance and upgrade purposes. Built in a 2RU case for 19″ rack installations.


  • Pure sine wave AC output powers telecom equipment without performance degradation
  • Continuous duty rated – full output wattage maintained even during extended power outages
  • 3000 Watts – easily cascaded for N+1 redundancy, providing maximum reliability required by data centers
  • Low EMI and RFI interference characteristics
  • High efficiency: 89% (Full linear load at 120 VAC Output)
  • Four NEMA 5-15R AC receptacles provided
  • Utility bypass, with fast load transfer switch, <6mS
  • Numerous circuit and load protections: over- temp, overload, reverse polarity, high/low battery voltage, AC input breaker
  • Load & temperature controlled cooling fan
  • Form C alarm contacts for monitoring Abnormal conditions
  • All diagnostic Operation Controlled by a microprocessor
  • User-friendly Status and Diagnostic LED displays
  • Remote Power Management optional via remote control relay RS-232 port
  • Inverter model/UPS mode switch
  • Standard 19″ 2U Rackmount


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Specifications: Rackmount Inverter – 3000 Watts

Model DC Input AC Output Weight (Lbs.)
Voltage Amps Volts/Watts
48-3000RM 42 – 62 75 120 VAC/3000 31.5

AC Characteristics

Voltage: 100-120 VAC (select using front panel potentiomet); Factory set at 120 VAC
Frequency: 60 Hz. Standard, 50 Hz. User selectable
Wave Form: Pure Sine
Total Harmonic Distortion: THD <3%
Transfer Time: 4-6 ms
From AC bypass mode: ≤ 20mS
From Inverter mode: ≤ 8mS


No Load Current: .39A
Over Voltage Protection: 62 VDC
Under Voltage Protection: 42 VDC
Voltage Range: 42-62 VDC
Efficiency: 89%( Full Load)


Voltage: 120 VAC
Max Output Power (3min): 3200W
Surge Power: 3500W (3 sec.)
Peak: 6,000W (<1 sec.)


LED: Online, Bypass, Inverter Mode, UPS Mode, Back-Up
LCD: 2 line LCD w/ Keypad for navigation
Selectable Functions: Output Voltage, Amperage, Watts, VDC In, Temperature,  Frequency settings
Operating Temperature: -20° to 50° C Full Load
Storage Temperature: -30° to 70° C
Cooling: Forced air, front-to-back On @ 300W load or elevated,
Humidity: 0-90% relative humidity

Visual & Audio Alarms:

  • Form C (Dry Contact) terminals: Summary alarm
  • Overload / Short Circuit Alarm
  • Input UV / OV
  • Over Temperature
  • Inverter Fail

Communication Interface

RS-232 port with user selectable, Remote control of inverter (on/off)


Dimensions: 17.52″W x 3.46″H x 16.7″D
Mounting: 19″ two post relay rack (flush or 6″ set-back) and 19″ four post cabinet mount

EMC & Safety Standards

EN 55022:2006, Class A
En61000-3-2: 2006
En61000-3-3: 1995+A1; 2001+A2:2005