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 ind...
Read MoreThe 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.
Designed for 19" rack-mount installation, it is ideally suited to telecommunications networks, radio communications infrastructure, and industrial systems where backup power is critical. The PB314A operates as a true off-line DC-UPS, delivering power to connected DC loads directly from the rectifier during normal operation, while simultaneously charging the battery. In the event of an AC mains failure, it automatically switches to battery power with no interruption to the load—ensuring continuous operation of critical systems without voltage dips or reset events.
Key features include a digital front-panel display for real-time system monitoring, selectable constant float voltage, current limiting, and integrated circuit breakers for both load and battery protection. The system also supports optional low-voltage disconnect (LVD) and battery temperature compensation, helping to maximise battery life and performance. Advanced alarm functionality and optional network connectivity via SNMP V1 and an embedded web server support reliable remote system monitoring.
Available in 13.8Vdc, 27.6Vdc, and 55.4Vdc output configurations, with models delivering between 636W and 1056W, the PB314A Series offers scalable, high-efficiency power solutions for a wide range of critical applications. Fully compliant with relevant safety (AS/NZS 60950.1) and EMC (AS/NZS CISPR11) standards, it ensures both performance and compliance in demanding environments.
The Powerbox PB314A Series is a trusted and proven choice for mission-critical systems requiring dependable DC-UPS functionality and advanced, configurable battery charging.
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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
| MODEL | PB314A-12-53-CxxA | PB314A-12-88-CxxA | PB314A-24-27-CxxA | PB314A-24-44-CxxA | PB314A-48-13-CxxA | PB314A-48-22-CxxA |
|---|---|---|---|---|---|---|
| MAX OUTPUT [W] | 636 | 1045 | 648 | 1056 | 624 | 1056 |
| DC OUTPUT*4 | 13.8V 46A (53A) | 13.8V 76A (88A) | 27.6V 23A (27A) | 27.6V 38A (44A) | 55.2V 11A (13A) | 55.2V 19A (22A) |
| INPUT | ||||||
|---|---|---|---|---|---|---|
| MODEL | PB314A-12-53-CxxA | PB314A-12-88-CxxA | PB314A-24-27-CxxA | PB314A-24-44-CxxA | PB314A-48-13-CxxA | PB314A-48-22-CxxA |
| VOLTAGE [V] | AC85 - 264 1ø | |||||
| CURRENT [A] (100V) | 8.2 typ | 13 typ*5 | 8.2 typ | 13 typ*5 | 8.2 typ | 13 typ*5 |
| CURRENT [A] (200V) | 4.1 typ | 7 typ | 4.1 typ | 7 typ | 4.1 typ | 7 typ |
| FREQUENCY [Hz] | 50/60 (47 - 63) | |||||
| EFFICIENCY [%] (100V) | 79 typ | 82 typ | 81 typ | 84 typ | 81 typ | 84 typ |
| EFFICIENCY [%] (200V) | 82 typ | 84 typ | 84 typ | 86 typ | 83 typ | 86 typ |
| INRUSH CURRENT [A] | 40 typ (cold start) | |||||
| *5 The IEC60320-C14 inlet is rated and fused to 10A. If full rated output power is required at AC85 - 132V input, contact Powerbox. | ||||||
| OUTPUT | ||||||
|---|---|---|---|---|---|---|
| MODEL | PB314A-12-53-CxxA | PB314A-12-88-CxxA | PB314A-24-27-CxxA | PB314A-24-44-CxxA | PB314A-48-13-CxxA | PB314A-48-22-CxxA |
| FLOAT VOLTAGE [VDC] | 13.8 | 13.8 | 27.6 | 27.6 | 55.2 | 55.2 |
| Adjustment Range (factory) | 12.0 - 13.8 | 12.0 - 13.8 | 24.0 - 27.6 | 24.0 - 27.6 | 48.0 - 55.2 | 48.0 - 55.2 |
| RECTIFIER CURRENT [A]*1 | 46 (53)*4 | 76 (88)*4 | 23 (27)*4 | 38 (44)*4 | 11 (13)*4 | 19 (22)*4 |
| RECTIFIER CURRENT LIMIT [A]*1 | 53 | 88 | 27 | 44 | 13 | 22 |
| Adjustment Range (factory) | 5 - 53 | 10 - 88 | 2.5 - 27 | 5 - 44 | 2.5 - 13 | 2.5 - 22 |
| BATTERY CHARGING CURRENT LIMIT [A]*2 (xxA: Adjustment Range, factory) | 5 - 53 | 10 - 88 | 2.5 - 27 | 5 - 44 | 2.5 - 13 | 2.5 - 22 |
| LINE REGULATION [mV] | 60 max. | 60 max. | 96 max. | 96 max. | 192 max. | 192 max. |
| LOAD REGULATION [%] | 1.0 typ. | |||||
| RIPPLE [mVp-p]*3 | 160 max. | 160 max. | 160 max. | 160 max. | 400 max. | 400 max. |
| NOISE [mVp-p]*3 | 180 max. | 180 max. | 180 max. | 180 max. | 500 max. | 500 max. |
| FLOAT VOLTAGE TEMPERATURE COMPENSATION (Options -T & -T5) [mV/°C] | -19.8 | -19.8 | -39.6 | -39.6 | -79.2 | -79.2 |
| LOW VOLTAGE DISCONNECT THRESHOLDS [V] (Option -LVD) | Disconnect: 10.5 Reconnect: 12.0 |
Contact Powerbox | Disconnect: 21.0 Reconnect: 24.0 |
Disconnect: 21.0 Reconnect: 24.0 |
N/A | N/A |
| OVERVOLTAGE SHUTDOWN | 16.2 - 18.6 | 16.2 - 18.6 | 32.4 - 37.2 | 32.4 - 37.2 | 60 - 67.2 | 60 - 67.2 |
| OUTPUT SHORT CIRCUIT PROTECTION | Indefinite (Autoreseting) | |||||
| BATTERY CHARGER SHORT CIRCUIT PROTECTION | Indefinite (Autoreseting) | |||||
| OUTPUT OVERLOAD PROTECTION | Thermal - Magnetic Circuit Breaker | |||||
| *1 Sum of load + batt. charging current | ||||||
| *2 This feature limits battery charging current but not load current. Specify current limit (xxA) at time of order. | ||||||
| *3 Using a 100MHz oscilloscope at the output terminals. | ||||||
| *4 The value in parentheses is the maximum short term rectifier (load + battery) current during battery float charging. | ||||||
| DISPLAYS AND ALARMS | ||||||
|---|---|---|---|---|---|---|
| MODEL | PB314A-12-53-CxxA | PB314A-12-88-CxxA | PB314A-24-27-CxxA | PB314A-24-44-CxxA | PB314A-48-13-CxxA | PB314A-48-22-CxxA |
| RECTIFIER OK (DC OK) | Voltage-free Normally Closed Contact (32V,1A). Alarm on failure of rectifier or tripping of overtemperature limit. | |||||
| AC OK | Voltage-free Normally Closed Contact (32V,1A). Alarm on AC mains failure. | |||||
| BATTERY OK | Voltage-free Normally Closed Contact (32V,1A). Alarm on battery low voltage, if no battery is connected, battery circuit breaker is open, or on failure of external battery fuse or wiring. | |||||
| Alarm Voltage (Falling) [V] | 10.8 | 10.8 | 21.6 | 21.6 | 43.2 | 43.2 |
| Adjustment Range (factory) | 9.0 - 13.8 | 9.0 - 13.8 | 18.0 - 27.6 | 18.0 - 27.6 | 36.0 - 55.2 | 36.0 - 55.2 |
| LCD DISPLAY | 2 Line x 16 character LCD. Load Voltage, Rectifier Voltage, Battery Voltage. Load Current, Rectifier Current, Battery Current. AC Mains Status, Rectifier Status, Battery Status, Load Status. |
|||||
| LEDs | MAINS ON, FAULT | |||||
| ISOLATION | ||||||
|---|---|---|---|---|---|---|
| MODEL | PB314A-12-53-CxxA | PB314A-12-88-CxxA | PB314A-24-27-CxxA | PB314A-24-44-CxxA | PB314A-48-13-CxxA | PB314A-48-22-CxxA |
| INPUT - OUTPUT | 3000 VAC, 1 minute | |||||
| INPUT - GROUND | 2000 VAC, 1 minute | |||||
| OUTPUT - GROUND | 500 VAC, 1 minute | |||||
| SAFETY AND EMC | ||||||
|---|---|---|---|---|---|---|
| MODEL | PB314A-12-53-CxxA | PB314A-12-88-CxxA | PB314A-24-27-CxxA | PB314A-24-44-CxxA | PB314A-48-13-CxxA | PB314A-48-22-CxxA |
| SAFETY | EN 60950-1, Class I | |||||
| EMC | CISPR22-B | |||||
| OTHERS | ||||||
|---|---|---|---|---|---|---|
| MODEL | PB314A-12-53-CxxA | PB314A-12-88-CxxA | PB314A-24-27-CxxA | PB314A-24-44-CxxA | PB314A-48-13-CxxA | PB314A-48-22-CxxA |
| OPERATING TEMP AND HUMIDITY | -20 - +50°C (-20 - +71°C with derating) | |||||
| COOLING METHOD | Forced cooling (Internal fan) | |||||
| 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 |
| 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 | 55.2Vdc | 11A | 13A | 2.5 - 13A | 624W |
| PB314A-48-22-C-XXA | 55.2Vdc | 19A | 22A | 2.5 - 22A | 1056W |
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 Drawings
Warranty & Returns
Warranty periods vary by product. Please refer to the Powerbox Warranty Policy for the applicable coverage period against manufacturing defects from date of purchase. For returns and RMA requests, please visit our RMA support page or contact our support team directly.
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