DIN Rail Mounted DC UPS, Power Supply, and Battery Detection System, 12V DC, 24V DC and 48V DC, 10 amps, meets NFPA 1221 in-building standards by Newmar Powering the Network

DIN Rail DC UPS with Battery Detection System: 12V, 24V and 48V DC

Powers Loads, Charges and Monitors Back-Up Battery, Meets NFPA 1221 Alarm Requirements

  • Combines all system power functions: power supply, battery charger, UPS circuitry and status monitoring in ONE compact Din Rail mount unit
  • Alarm outputs comply with NFPA public saftey in-building wireless communications back-up power requirements for powering Bi-directional Antennas (BDA):
    • AC Fail, Low Battery, and Charger Fail
  • Separate outputs for load and battery
  • "Load Priority" circuit prevents discharged battery from impacting operation of critical loads when AC power is restored
  • 3 step charging for rapid battery recovery, programmable for battery type, with optional temperature compensation sensor
  • Low voltage disconnect protects battery from total discharge
  • High operating temperature range to 70˚ C
  • Communication MODBUS via RS-485 interface/RJ45 (model BDS-DIN-UPS 48-10 only)
  • CE Approved/Designed to UL 1950

Input: All models 115/230 VAC Input

Model Output MODBUS Dimensions Weight
Voltage Power (H x W x D)
BDS-DIN-UPS 12-10 12 VDC 10 Amps NA 4.5" x 2.6" x 5.3" 2 Lbs.
BDS-DIN-UPS 24-10 24 VDC 10 Amps NA 4.5" x 3.9" x 5.3" 2 Lbs.
BDS-DIN-UPS 48-10 48 VDC 10 Amps Yes 4.5" x 5.9" x 5.3" 4 Lbs.


Front Panel LED Indicators:

  • Power Source: AC or on back up
  • Battery and System Diagnostics (via blink code)


Battery Type: Lead Acid, Gel-Cell, Ni Cad (model BDS-DIN-UPS-48-10 only)
Battery Charge Current Limit: 20 - 100% of charge amperage rating
Power Restore Button: connects battery without AC present

Battery Detection Signal Outputs (form C)

  • AC Fail
  • Low battery voltage indicating battery discharge by 70% (i.e. 30% capacity remains)
  • MODBUS Communication (BDS-DIN-UPS 48-10 model only)


-25 to +70˚ C. Continuous to 50˚, de-rate 2.5% per ˚C >50˚ C


Free air, convection



DIN Rail Watt Loss/BTU's
Models Watts Loss BTU’s
DIN UPS 12-10/BDS DIN UPS 12-10 17 58
DIN UPS 12-35 48 164
DIN UPS 24-10/BDS DIN UPS 24-10 28 96
DIN UPS 24-20 48 164
DIN UPS 48-5 28 96
DIN UPS 48-10/BDS DIN UPS 48-10 54 185


  • Low Voltage disconnect at 1.5 volts per cell
  • Internal fuse
  • Current limiting
  • Short circuit
  • Reverse polarity
  • Thermal overload shut down and recovery
  • IP 20
  • Designed to UL 1950

Terminal Blocks

Screw type


DIN Rail Bracket (35mm)


Battery temperature compensation probe with 10' cable (468-4510-0)