Wall Mount Battery Charger for Security Applications 70W – 140W

The BW54 Series is a new generation / smart Power Supply that is designed to provide battery backed-up power in the event of either the PSU or the battery being disconnected or short-circuited.When the AC supply fails, the battery will automatically be connected and will provide power until the ac supply is restored.. If the battery has reached it’s disconnect voltage, it will automatically be disconnected to prevent deep discharge damage.

Designed for powering critical loads with battery back-up, in a wide range of Industrial applications and in particular Security installations and Access Control, with separate Load and Battery Charging circuits.

A wide range of Signals, Led?s and Alarms, all aimed at a providing the optimum solution for powering critical DC Loads.

An isolated Common Fault relay has been provided which will operate if any fault is found (This is a fail-safe signal so will signal a fault even if no power sources are on/connected.

Main Features

  • Three power levels 70, 100 and 140 watt
  • Separate load and battery charging output
  • 12V & 24V systems
  • Convection cooled – No fans
  • Power Fail & Battery Fail alarms
  • Short circuit protection & Battery Fuse protection
  • Deep discharge battery protection
  • DC OK Led’s for various alarms
  • MTBF > 210,000hrs
  • IEC Input inlet for AC power
  • Key lock
  • Optional – Distribution board


ModelOutput  NomFloat VCharger A Power
BW5475-1212 V13.8 V1.0A75W
BW54100-1212 V13.8 V1.4A100W
BW54140-1212 V13.8 V2.0A140W
BW5475-2424 V27.6 V0.6A75W
BW54140-2424 V27.6 V1.0A140W


Input Voltage240Vac  ( 200~264 )
Input Frequency47 ~ 63Hz
Input FuseYes
Hold Up Time30ms @ 230Vac input, full load and no battery connected.
Power Factor 0.42 @ 230Vac and  full load
No load Power <5W
Start up Time Typically 1.5 seconds
Output Voltage13.8V  / 27.6V  Refer to table
Output CurrentRefer to table
Power LimitTypically at 115%
Efficiency80-85% @ 230Vac and full load
OVP105-125% latching. Recycle input after 30 seconds to restar
Short Circuit ProtectionHiccup mode
Current LimitPrimary side power limited
Thermal ProtectionPrimary side ( non-latching )
Operating Temp. -10ºC to +70ºC (Derate 2.5% / ºC above 50ºC)
CoolingConvection cooled
Humidity10-95% non-condensing
Ripple & Noise0.5% @ 230Vac , full load ( BW =DC-10Hz)
SafetyEN60950, Class I
InsolationInput – Output / Case: 2200Vdc
EMCEN55022 Class B  Conducted
EN55022 Class A  Radiated
ImmunityEN61000-3-2   Class A  Harmonics
EN61000-4-4   Fast TransientsEN61000-4-5    Surge
EN61000-4-11  Voltage Dips

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