Battery Chargers and DC UPS Solutions

Powerbox PBB2S SERIES DC-UPS Battery Charger

The Powerbox PBB2S Series DC-UPS Battery Charger is a robust, industrial-grade power solution designed to deliver reliable DC power and uninterrupted battery backup for critical applications. Engineered with high efficiency and advanced safety features, the PBB2S Series is ideal for security and access control systems. Key features include separ...

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The Powerbox PBB2S Series DC-UPS Battery Charger is a robust, industrial-grade power solution designed to deliver reliable DC power and uninterrupted battery backup for critical applications. Engineered with high efficiency and advanced safety features, the PBB2S Series is ideal for security and access control systems.

Key features include separate current-limited battery charging outputs, built-in overcurrent and short-circuit protection, and user-friendly indicators for real-time monitoring. Its lightweight, corrosion-resistant aluminum enclosure ensures durability in harsh environments, while natural convection cooling provides efficient and noiseless operation. The self-resetting battery fuse and overtemperature protection add to the charger’s reliability and low maintenance.

Available in 13.8Vdc (3.5A and 7A) and 27.6Vdc (3.5A) configurations, the PBB2S Series offers flexibility to suit a wide range of power requirements. Compliant with AS/NZS60950.1 safety standards and AS/NZS CISPR22 Class B EMC standards, this charger ensures safe and reliable operation.

The Powerbox PBB2S Series DC-UPS Battery Charger is your dependable partner for maintaining uptime and safeguarding equipment in challenging environments.

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Features
  • Australian Made, designed for Security & Electronic Access Control Applications
  • 12VDC 3.5A / 7A and 24VDC 3.5A power supplies for battery backup applications
  • Cost Effective with High reliability and High Efficiency
  • Separate current-limited battery charging output
  • Output over current and short circuit protection
  • Output over voltage protection
  • Self-resetting battery fuse
  • Over temperature protection
  • Mains OK / DC OK - Green LED and alarm contact
  • Green Battery OK - Green LED and alarm contact
  • Battery Fuse Fail - Red LED
Specifications
INPUT
Input Voltage 100-240Vac
Nominal Frequency 50–60Hz
Input Current

PBB2S-13-3.5: 1.3A

PBB2S-13-7: 2.8A

PBB2S-28-3.5: 2.8A
Power Factor Conforms to EN61000-3-2
DISPLAYS AND ALARMS
Mains / DC Ok Green LED. ON=OK Voltage-free changeover contact 30Vdc, 7A rating
Battery Ok Green LED. ON=Vbatt > 11.5Vdc OFF = Vbatt < 10.5Vdc Voltage-free changeover contact 30Vdc, 7A rating
Battery Fuse Fail Red LED: ON=FAIL
OUTPUT
Output Voltage

PBB2S-13-3.5 / PBB2S-13-7: 13.8Vdc 

PBB2S-28-3.5: 27.6Vdc 
Output Power 48W, 96W
Output Current Sum of load + battery charging current. See Selection Table
Ripple & Noise < 100mVpp, BW=20MHz
OUTPUT BATTERY OPERATION
Voltage Drop Battery to Output

PBBS-13-3.5: 0.47Vdc typ.

PBBS-13-7: 0.55Vdc typ.

PBB2S-28-3.5: 2.8A
Short Circuit Protection Self-resetting battery fuse
Battery Reverse Polarity Protection Indefinite
PROTECTION
Short Circuit Protection Hiccup, non-latching
Load+Battery Charging Hiccup overcurrent protection, >120% of rated current
Battery Charging Current limited taper charging
Overvoltage 16V +10%/-5% Hiccup
Over Temperature protection Automatic self-resetting
MECHANICAL
Input Connector AC Mains 10A Class 1 IEC60320 power inlet
Load and Battery Connector 4 way pluggable screw terminal block. Suitable for up to 2.5mm² wire
Alarms Connector 3 way pluggable screw terminal block Suitable for up to 1.5mm² wire
Dimensions 219 x 114 x 62mm, LxWxD
Unit Weight PBB2S-13-3.5: 600g PBB2S-13-7: 900g PBB2S-28-3.5: 900g
ENVIRONMENTAL
Operating Temperature -10°C to +70°C
Power De-rating -2.5%/°C above 40°C
Cooling Natural Convection
Overtemperature Protection Automatic self-resetting
Selection Table
MODEL NUMBER OUTPUT VOLTAGE TOTAL CURRENT BATTERY CURRENT OUTPUT POWER
PBB2S-13-3.5 13.8Vdc 3.5A 0.25A  48W
PBB2S-13-7 13.8Vdc 7A 1.0A 96W
PBB2S-28-3.5 27.6Vdc 3.5A 0.5A 96W
Technical Drawings
Downloads
PBB2S-Series-DS-251121.pdf
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.