Battery Chargers

Powerbox PB314A-RM SERIES DC-UPS / Battery Charger - 19" Rack Mount

The Powerbox PB314A Series DC-UPS and Battery Charger delivers a robust and reliable solution for applications demanding uninterrupted DC power and intelligent battery management. Proudly designed and manufactured in Australia by Powerbox, the PB314A reflects decades of local engineering expertise and is built to meet the needs of Australian industry and infrastructure.

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Powerbox PB314A-RM SERIES DC-UPS / Battery Charger - 19" Rack Mount

Features

  • True Off-Line DC-UPS Functionality: The PB314A provides continuous DC power during mains failure by seamlessly switching to battery backup—ensuring no interruption to connected equipment.
  • Ideal for Radio Communications & Telecom Applications: Widely used in radio networks, base station sites, and telecommunications infrastructure, the PB314A delivers dependable backup power where system uptime is mission-critical.
  • Designed and Manufactured in Australia: Engineered by Powerbox in Australia, the PB314A Series reflects local expertise and is built to meet the demanding standards of the Australian Radio and Critical Communications industry.
  • Rack-Mountable High-Power System: Available in 13.8Vdc, 27.6Vdc, and 55.4Vdc configurations, with output power up to 1056W, this 2RU 19” rack-mounted system integrates easily into existing comms and control environments.
  • Integrated Battery Management & Protection: Features include constant float voltage, current limiting, thermal-magnetic circuit breakers for both load and battery, and optional battery LVD and temperature compensation for enhanced battery care.
  • Advanced Monitoring with Optional Network Connectivity: Onboard digital display, alarm relays, and optional SNMP V1/web interface provide reliable system status reporting and remote monitoring capability.
Specifications
INPUT
Input Voltage 85-264Vac or 120-360Vdc
Frequency: 47 to 63 Hz
Input Current: 4.1A typical 200Vac
Inrush current: 40A typical cold start 200Vac
OUTPUT
Output Voltage 13.8Vdc, 27.6Vdc, 55.4Vdc
Output Power 624W - 1056W
Output Current See Selection Table
Load regulation 1% typical
Ripple 160mVp-p maximum
Noise 180mVp-p maximum
Overvoltage shutdown 16.2 to 19.8V latching
Output short circuit protection Indefinite (Autoresetting)
Battery charger short circuit protection Indefinite (Autoresetting)
Load output protection Thermal - Magnetic Circuit Breaker
Battery output protection Thermal - Magnetic Circuit Breaker.
Efficiency 79% typical
DISPLAY AND ALARMS
DC OK LED Green On = OK, Voltage-free changeover contact (32V, 1A). Alarm on failure of AC/DC PSU and tripping of over temperature limit.
AC OK Neon Green On = OK, Voltage-free changeover contact (32V, 1A). Alarm on mains fail.
Charger voltage OK alarm LED Green On = OK, Voltage-free changeover contact (32V, 1A). Alarm on battery low voltage or on opening of battery circuit breaker.
Battery low voltage alarm 11.0V (12V), 22.0V (24V), 44.0V (48V
OPTIONAL FEATURES
Battery Charge Current Option XXA: The battery charging current limit "XX" amps is set at time of manufacture. Often recommended by battery manufacturer given AH rating of battery.. Or contact Powerbox for more information. See selection table
Battery LVD Disconnect Option LVD: For 12V and 24V models, not available in 48V models.
Network Card Option N: Internal network card in conjunction with PB314A becomes a network enable device combining the benefits of SNMP V1, XML and an embedded webpage.
Temperature Compensation Option T: Temperature probe 2.5M cable Option T5: Temperature probe 5M cable Float voltage set to 2.3V per cell at 25°C with compensation of 3.3mV per cell
Output Alarm Connection Option P: Phoenix Contact Mating Connector included
PROTECTION
Overvoltage shutdown 16.2 to 19.8V latching
Output short circuit protection Indefinite (Autoresetting)
Battery charger short circuit protection Indefinite (Autoresetting)
Load output protection Thermal - Magnetic Circuit Breaker
Battery output protection Thermal - Magnetic Circuit Breaker.
Isolation Input - Output: 3KVac 1 min Input - Ground: 2KVac 1 min Output - Ground: 500Vac 1min
STANDARDS & APPROVALS
C-Tick AS/NZS CISPR11 Group 1 Class A.
Safety UL 60950 Class 1
EMC Emissions comply with AS/NZ CISPR22 Class-B
ENVIRONMENT
Operating temperature -20°C to +71°C Derating linearly from 50°C to 71°C to 50% power
Humidity 20-90% relative humidity (non condensing)
Cooling Forced cooling - internal fan
MECHANICAL
AC input socket IEC320 fused / on off switch
Output termination Cage clamp terminals (-C version)
Output Alarm Connection Standard DB25 Socket Mating Connector not included
Load fault current protection 63A circuit breaker
Battery fault current protection 63A circuit breaker
Rack mount size 270 D x 19" W x 2RU H
Weight 5.0 kg
Selection Table
MODEL NUMBER

OUTPUT

VOLTAGE

LOAD

CURRENT¹

LOAD PK

CURRENT

 BATTERY

CHARGE

CURRENT²

OUTPUT

POWER
PB314A-12-53-C-XXA 13.8Vdc  46A 53A 5 - 53A 636W
PB314A-12-88-C-XXA 13.8Vdc  76A 88A 10 - 88A 1045W
PB314A-24-27-C-XXA 27.6Vdc  23A 27A 2.5 - 27A 648W
PB314A-24-44-C-XXA 27.6Vdc  38A 44A 5 - 44A 1056W
PB314A-48-13-C-XXA 55.4Vdc  11A 13A 2.5 - 13A 624W
PB314A-48-22-C-XXA 55.4Vdc  19A 22A 2.5 - 22A 1056W
 
NOTES

¹ Output Load Current also includes Battery Charge Current.

² The Battery Charging Current is factory set. Battery supplier to recommend or contact Powerbox for recommendation battery charge current. The 'XX" in model number designates the required battery charge current limit.

Technical Illustrations
Downloads
PB314A_Rev.M_31-06-19_datasheet.pdf
INPUT
Input Voltage 85-264Vac or 120-360Vdc
Frequency: 47 to 63 Hz
Input Current: 4.1A typical 200Vac
Inrush current: 40A typical cold start 200Vac
OUTPUT
Output Voltage 13.8Vdc, 27.6Vdc, 55.4Vdc
Output Power 624W - 1056W
Output Current See Selection Table
Load regulation 1% typical
Ripple 160mVp-p maximum
Noise 180mVp-p maximum
Overvoltage shutdown 16.2 to 19.8V latching
Output short circuit protection Indefinite (Autoresetting)
Battery charger short circuit protection Indefinite (Autoresetting)
Load output protection Thermal - Magnetic Circuit Breaker
Battery output protection Thermal - Magnetic Circuit Breaker.
Efficiency 79% typical
DISPLAY AND ALARMS
DC OK LED Green On = OK, Voltage-free changeover contact (32V, 1A). Alarm on failure of AC/DC PSU and tripping of over temperature limit.
AC OK Neon Green On = OK, Voltage-free changeover contact (32V, 1A). Alarm on mains fail.
Charger voltage OK alarm LED Green On = OK, Voltage-free changeover contact (32V, 1A). Alarm on battery low voltage or on opening of battery circuit breaker.
Battery low voltage alarm 11.0V (12V), 22.0V (24V), 44.0V (48V
OPTIONAL FEATURES
Battery Charge Current Option XXA: The battery charging current limit "XX" amps is set at time of manufacture. Often recommended by battery manufacturer given AH rating of battery.. Or contact Powerbox for more information. See selection table
Battery LVD Disconnect Option LVD: For 12V and 24V models, not available in 48V models.
Network Card Option N: Internal network card in conjunction with PB314A becomes a network enable device combining the benefits of SNMP V1, XML and an embedded webpage.
Temperature Compensation Option T: Temperature probe 2.5M cable Option T5: Temperature probe 5M cable Float voltage set to 2.3V per cell at 25°C with compensation of 3.3mV per cell
Output Alarm Connection Option P: Phoenix Contact Mating Connector included
PROTECTION
Overvoltage shutdown 16.2 to 19.8V latching
Output short circuit protection Indefinite (Autoresetting)
Battery charger short circuit protection Indefinite (Autoresetting)
Load output protection Thermal - Magnetic Circuit Breaker
Battery output protection Thermal - Magnetic Circuit Breaker.
Isolation Input - Output: 3KVac 1 min Input - Ground: 2KVac 1 min Output - Ground: 500Vac 1min
STANDARDS & APPROVALS
C-Tick AS/NZS CISPR11 Group 1 Class A.
Safety UL 60950 Class 1
EMC Emissions comply with AS/NZ CISPR22 Class-B
ENVIRONMENT
Operating temperature -20°C to +71°C Derating linearly from 50°C to 71°C to 50% power
Humidity 20-90% relative humidity (non condensing)
Cooling Forced cooling - internal fan
MECHANICAL
AC input socket IEC320 fused / on off switch
Output termination Cage clamp terminals (-C version)
Output Alarm Connection Standard DB25 Socket Mating Connector not included
Load fault current protection 63A circuit breaker
Battery fault current protection 63A circuit breaker
Rack mount size 270 D x 19" W x 2RU H
Weight 5.0 kg
MODEL NUMBER

OUTPUT

VOLTAGE

LOAD

CURRENT¹

LOAD PK

CURRENT

 BATTERY

CHARGE

CURRENT²

OUTPUT

POWER
PB314A-12-53-C-XXA 13.8Vdc  46A 53A 5 - 53A 636W
PB314A-12-88-C-XXA 13.8Vdc  76A 88A 10 - 88A 1045W
PB314A-24-27-C-XXA 27.6Vdc  23A 27A 2.5 - 27A 648W
PB314A-24-44-C-XXA 27.6Vdc  38A 44A 5 - 44A 1056W
PB314A-48-13-C-XXA 55.4Vdc  11A 13A 2.5 - 13A 624W
PB314A-48-22-C-XXA 55.4Vdc  19A 22A 2.5 - 22A 1056W
 
NOTES

¹ Output Load Current also includes Battery Charge Current.

² The Battery Charging Current is factory set. Battery supplier to recommend or contact Powerbox for recommendation battery charge current. The 'XX" in model number designates the required battery charge current limit.

PB314A_Rev.M_31-06-19_datasheet.pdf

Find the Right Model

Model Number Input Voltage (Vac) Output Voltage (Vdc) Output Current (A)
product variant PB314A-12-53-C-XXA 85...264Vac 50/60Hz 13.8Vdc 53A (Battery Charge Limit: 5 - 53A)
product variant PB314A-12-88-C-XXA 85...264Vac 50/60Hz 13.8Vdc 88A (Battery Charge Limit: 10 - 88A)
product variant PB314A-24-27-C-XXA 85...264Vac 50/60Hz 27.6Vdc 27A (Battery Charge Limit: 2.5 - 27A)
product variant PB314A-24-44-C-XXA 85...264Vac 50/60Hz 27.6Vdc 44A (Battery Charge Limit: 5 - 44A)
product variant PB314A-48-13-C-XXA 85...264Vac 50/60Hz 55.4Vdc 13A (Battery Charge Limit: 2.5 - 13A)
product variant PB314A-48-22-C-XXA 85...264Vac 50/60Hz 55.4Vdc 22A (Battery Charge Limit: 2.5 - 22A)

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