PB256-2405CML - Powerbox 138W PSU with Battery Charger System

Powerbox SKU: PB256-2405CML

$459.00 NZD $533.00 NZD Save $74.00 NZD

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  • 138W 12VDC & 24VDC
  • Battery Backup System
  • DC UPS Connectable
  • Independent Load and Battery Current Limited
  • Converter ON/OK alarm
  • Battery Low Alarm
  • Battery low voltage disconnect switch with internal electronic circuit breaker
  • Battery Over Load protection
  • Conformal Coating option for wet areas
  • C-Tick Approved
Input Voltage 190-.264Vac, or 190-.400Vdc
Frequency 45 to 65 Hz
Input Current 3A maximum
Inrush current 15A on cold start
Line Regulation 0.2% typical
Output Voltage 13.8Vdc, 27.6Vdc
Output Power 138W, See power derating curve
Output Current

13.8Vdc: 10A

27.6Vdc: 5A

See Selection Table

Load regulation 2% typical
Ripple & Noise 25 mVp-p (13.8Vdc output)
45mVp-p (27.6Vdc output)
Efficiency > 80%

Current limit type
(Load circuit)
Constant current > LVD volts
Foldback & hiccup < LVD volts
Short circuit protection Indefinite, auto-resetting
Over-voltage protection 15.5 to 19.5 V latching (13.8Vdc output)
31.5 to 39 V latching (27.6Vdc output)
Reverse polarity protection Internal fuse

Input to Output: 2.1Kvdc 1 min

Output to Ground: 2.1Kvdc 1 min

Output to Ground: 700Vdc 1 min

Operating temperature

0 to 50°C ambient

For derating, see curve in technical illustrations

Humidity 5 to 90% relative humidity (non-condensing)
Over-temperature protection Automatic & auto-resetting
Cooling requirement Natural convection
Shock/Impact 50G 11mS once each along x, y and z axis
Converter ON/OK alarm Indicated by voltage-free changeover relay contacts & green LED: ON=OK
Battery low alarm

< 11.3Vdc: 12V Battery

< 22.6Vdc:  24V Battery

Indicated by voltage-free changeover relay contacts & green LED: ON=OK.

Low voltage disconnect

10.8V (Typical for 12Vdc battery)

21.6V (Typical for 24Vdc battery)

Battery over-load


Electronic circuit breakerauto-reset
Battery to load voltage drop 0.2 V (27.6V output)
Battery Charge Limit

Option BCL: Specify battery charge current based on battery size.

Heatsink Option H: Supplementary heatsink
Conformal Coating Option CC: Tropic protection for moist areas
C-Tick AS/NZS CISPR11 Group 1 Class A.
Safety Compliles with AS/NZS 60950, Class 1
EMC Emissions comply with AS/NZS CISPR11,
Group 1, Class B. Complies with ACA EMC
Scheme, C-Tick


Input Connector

AC Mains 10A Class 1

IEC60320 power inlet

Load and Battery


4 way pluggable screw terminal block.

Suitable for up to 1.5mm² wire

Alarms Connector

6 way pluggable screw terminal block

Suitable for up to 1.5mm² wire

Case size 230 L x 93 W x 46 H (mm)
Weight 850g
Security Cabinet

Option W: WMBB-C-S

Wall Mount Box Black

with battery Cables and tamper Switch

alliance wholesale prduct range


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