Commander DC Power System

Incredible Functionality, Flexibility, and Scalability in a 5 RU, 1.0 to 14.0 Kw DC Power System



  • 19″, 5U rackmount shelf with integrated power distribution
  • 90-250 VAC input, Power Factor Corrected
  • 7 power bays accept 1000 or 2000 watt modular rectifiers
  • 259 amp, 14,000 watt total max. output capacity, (222 Amp, 2,000 Watt, N+1) @ – 54 VDC
  • Output temperature compensated for precise battery charging
  • 18 DC circuit breaker distribution capacity, with tripped breaker alarm, 63 amp max. circuit breaker rating
  • Master disconnect breakers for four battery banks, with tripped breaker alarm
  • Controller with digital display of system parameters with TCP/IP interface and SNMP monitoring/logging
  • Alarm contacts monitor major system functions
  • Low voltage disconnect built in
  • Easily configures to meet site power requirements

Request Quote or Additional Information

Complete system design and integration by Newmar to your application parameters: Rectifier configuration, installation of distribution circuit breakers, and configuration of alarms and monitors. Assembly in a relay rack with batteries and wiring also available. Let us submit a proposal on your next project. All system components are sold separately.

Specifications: Commander DC Power System

Model Input Amps @ Full Load 115/230V Output Weight
Voltage Amps
Lbs Kg.
C2RX-2048 11.4 Amps (output derated approx. 40% @ 115V)/9.8 Amps @ 230V -54.4V DC, adjustable 48 - 58V DC 37A* 2000 3.5 1.59
* @ 120 VAC: Derate 2 kW rectifiers by 40%; 1kW rectifiers by 33%
Shelf Input Voltage Range Configuration Size Weight
CMDRS-48 90-300V (derate @ 115 input),
45-65 Hz.
7 Commander Rectifiers (-48 V), Controller,
18 DC Circuit Breaker Distribution, 4 x 100A Battery Breakers
19/23”, 5 RU 35.15 Lbs.

AC Input

Nominal: 230V
Voltage Range: 90-300V (derate @ 115 input)
Wiring Options: 1) Single 208-240VAC, 3 phase, 4 wire WYE ('Y') input or 2) 3 x separate 208-240VAC, 2 wire inputs
Frequency Range: 45-65 Hz
Power Factor: >0.99
Efficiency: >94% (from 30-95% output power)

DC Output

Voltage: -48 volt
Output Ratings: Constant power output from 48V to 58V
Nominal Voltage: 48V
Rated Voltage: 58V


Rated maximum System Output Power: 14,000W @ -48V
Polarity: Positive Earth (or specify)

Individual Rectifier Power:

(48 volt)   2000 watt
Amperage @ 230 vac in   37
Amperage @ 115 vac in   21

DC Distribution

Load: 18 breaker positon capacity, available amperages (specify) 6A, 10A, 16A, 20A, 25A, 32A, 40A, 50A and 63A tripped breaker alarm
Battery: 4 x 100A battery circuit breakers.
Breaker Fail Detection: Electronic fail detection on both load and battery breakers
Low Voltage Battery Disconnect: 300A battery LVD installed standard, with disconnect alarm

Monitoring & Control

Monitors all DC power system conditions including DC voltage, rectifier current, battery current, battery temperature, and distribution failure. Visual notification of alarm conditions by LED's and a 4 line x 16 character alpha numeric display mounted on the front panel, with remote notification being enabled by relay contacts, RS232 or TCP/IP (using SNMP). It has a built-in web based configurator allowing setup of system parameters using a web browser and utilizes a USB communications port which allows for local monitoring of system operations as well as easy downloading of configuration files for multiple site installations. For a demonstration of the SM-36 Monitor and Control Software, click here.

General System


Current Limit: Adjustable to 50-100% of maximum rated current.
Over Temperature: Automatic current reduction, backup shutdown protection.
Polarity Reversal: Output fuse with crowbar diode.
Over Voltage: Adjustable limit.
Input Voltage: Auto shutdown, auto restart when correct voltage restored.
Input Inrush: Input Fuses: In phase and neutral.

Technical Characteristics

Noise: Ripple Voice band 100Hz-5KHz: Wide band 5kHz-1MHz: Peak to Peak 0-20MHz: Isolation: Input to Output: 4000V DC.
Input to Chassis: 3500V DC (VDR to chassis removed)
Output to Chassis: 2100V DC
Regulation: Line = +/-0.1%, Load = +/-0.5% (no load to full load)


Shelf Dimensions: 19" W x 8.75" H x 15.35" D
Weight: 35.15 Lbs. (excluding rectifier modules)
Rectifers Dimensions: 4.25" W x 2.75" W x 11.1" D
Weight: 3.15 Lbs
Cooling: Forced cooled


Ambient Temperature: Nominal: 25+/-5˚ C
Range: -10˚ C to +70˚ C (maximum output power is derated above +50˚ C)
Humidity: 5-95% RH (non-condensing)
Altitude: <8,202 ft., De-rate maximum ambient temperature by 4˚ C per 3,280 ft. above sea level.


Safety: EN60950
Electrostatic Discharge: CISPR24
Radiated Radio Freq: CISPR22
AC Harmonics: EN61000-3-2
AC Flicker & Fluctuation: EN61000-3-3
Other: CE & RoHS compliant