24V and 48V,
6,000 Watt,
Fully Integrated, Redundant DC Power System

Incredible Functionality, Flexibility, and Scalability in a 2 RU, 1.0 to 6.0 Kw DC Power System

  • 19″, 2U rackmount shelf with integrated power distribution
  • 90-250 VAC input, Power Factor Corrected
  • 3 power bays accept 1000 or 2000 watt modular rectifiers
  • 111 amp, 6000 watt total max. output capacity, (74 Amp, 4000 Watt, N+1) @ – 48 VDC
  • Output temperature compensated for precise battery charging
  • 16 DC circuit breaker distribution capacity, with tripped breaker alarm
  • Master disconnect breakers for two 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



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.

Specifications: Centurion II DC Power System

System Power Configurations @ 48V* (220 VAC Input)
Watts Per Rectifier # of Rectifiers Installed
1 2 3
2000 37A (2000W) 74A (4000W) 111A (6000W)
1000 18A (2000W) 36A (4000W) 54A (6000W)
System Power Configurations @ 24V*
2000 (rated to 1000W @ 24V) 37A (1000W) 74A (2000W) 111A (3000W)
* @ 120 VAC: Derate 2kW rectifiers: 41%; 1Kw: rectifiers 33%. Exception: 2000W rectifier set at 24V has no derating with 120V AC input.

 AC Input:

Nominal: 230V
Voltage Range: 90-300V (derate @ 115 input)
Frequency Range: 45-65 Hz
Power Factor: >0.99
Efficiency: >94% (from 30-95% output power)

DC Output:

Voltage -48 volt +24 volt
Output Ratings: Constant power outputfrom 48V to 58V Constant power output from24V to 29V
Nominal Voltage: 48V 24V
Rated Voltage: 58V 29V


Rated maximum System Output Power: 6000W @ -48V, 3000 watts @ 24 volts
Polarity: Positive earth. 48 volt, negative earth 24 volt

Rectifier Model C2R-1000 C2R-2000 C2R-1000 C2R-2000
Output Volts 24 VDC 24 VDC 48 VDC 48VDC
Amperage @ 230 vac 21 41.7 21 41.7
Amperage @ 115 vac 12 21 12 21
Wattage @ 230 vac in 504 1000 1000 2000
Wattage @ 115 vac in 288 504 576 1000

DC Distribution:

Load: 16 breaker position capacity, available amperages (specify) 6A, 10A, 20A, 30A and 50A with tripped breaker alarm. (50A circuit breaker is a special order – contact factory for more information)
Battery: 2 x 100A battery circuit breakers.
Breaker Fail Detection: Electronic fail detection on both load and battery. Breakers
Low Voltage Battery Disconnect: 125A 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 controller 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.

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: <2x maximum input current.
Input Fuses: In phase and neutral.

Technical Characteristics

Noise: Ripple <100Hz: <1mV rms unweighted
Voice band 100Hz-5KHz: <1mV rms psophometric
Wide band 5kHz-1MHz: <5mV rms unweighted
Peak to Peak 0-20MHz: <100mV peak to peak
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 3.5″ H x 15.35″ D /
Weight: 19.84 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 +70v 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


Wiring Option: Battery Cable, 2 AWG, 7’ Length (P/N: 435-2007-0)

BSW2-7 Centurion II DC Power System 24V DC and 48V DC Battery Cable Wiring Newmar