Rackmount DC-AC Inverter, 1 RU, 1000 Watts Output by Newmar Powering the Network

DC-AC Inverter

The 1RU Series DC-AC 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 low profile 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
  • 1000 Watts – easily cascaded for N+1 redundancy, providing maximum reliability required by data centers
  • Low EMI and RFI interference characteristics
  • High efficiency: 88% (Full linear load at 120 VAC Output)
  • Two NEMA 5-20R AC receptacles provided
  • Utility bypass, with fast load transfer switch, <8mS
  • 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
  • Fan aging, failure, disconnect and blockage alarm
  • All diagnostic Operation Controlled by a microprocessor
  • User-friendly Status and Diagnostic LCD/LED displays
  • Remote Power Management optional via remote control relay RS-232 port
  • Standard 19″ 1U Rackmount
  • UL and cUL listed

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Specifications: Rackmount Inverter – 1RU Series

Model DC Input AC Output Weight (Lbs.)
Voltage Amps Watts
48-1U-1000RM 36 – 60 25 1000 12.7

AC Characteristics

Voltage: 97-123 VAC (select using front panel selection buttons or RS-232 port and additional software); Factory set at 110 VAC
Frequency: 60 Hz. Standard, 47-63 Hz. User selectable
Wave Form: Pure Sine
Total Harmonic Distortion: THD < 2%
Transfer Time:
From AC bypass mode: ≤ 20mS
From Inverter mode: ≤ 8mS


No Load Current: .75A
Over Voltage Protection: 60 VDC
Under Voltage Protection: 36-44 VDC
Voltage Range: 36-60 VDC
Efficiency: 88 %( Full Load)


Voltage: 97-123 VAC
Transfer Switch: 15AMP/120VAC
Max Output power (3min): 1100W
Surge power: 2000W


LED: Inverter (On), AC Grid, Bypass and Alarm
LCD: 2 line LCD w/ Keypad for navigation
Selectable functions: Input OVP, UVP voltage, UV alarm & Alert settings, Output voltage, Frequency settings, Online, Offline(Haphazard, normal, Exacting) settings
Operating Temperature: 0° to 50° C Full Load, -30°-70° C in Storage
Cooling: Forced air, front-to-back On @ Internal > 55°C or load > 30%
Humidity: 0-90% relative humidity

Visual & Audio Alarms:

  • Form C (Dry Contact) terminals
  • Overload / Short Circuit Alarm
  • Input UV / OV
  • Over Temperature
  • Fan Failure (Buzzer alarm)

Communication Interface

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


Dimensions: 16.5″W x 1.713″H x 15.5″D
Mounting: 19″ or 23″ Rack (Requires 19″-23″ adaptors)

EMC & Safety Standards

FCC CFR Title 47 Part 15 subpart B:2005 class B,
CISPR 22: 2005 CE Marked
En55022: 1998+A1:2000+A2:2003 Class B, En55024:1997+A1:2001+A2:2003 Class B
En61000-3-2: 2006 Class A, EN 61000-3-3:1995+A1:2001
FCC Class B, UL60950-1, CAN/CSA-C22.2 No.60950-1 & TUV EN60950-1

Rear Panel View