100W – AC/DC Power Supply / Battery Charger

The SR100HL range is designed for use as a reliable and stable AC to DC power supply, or float charger for lead-acid batteries. Note that for float charging the output voltage must be set to approximately 15% above the nominal battery voltage models. This is done as the default voltage for the 12V model but must be specified at time of order for all higher voltage models.


  • Security – Access Control
  • Industrial Processes Switching Protection
  • Radio Repeaters – Remote Sites

Points of Difference

  • Ideal for standby float charging of lead-acid batteries
  • Constant current limit and Precise voltage control
  • Temperature compensation option
  • Efficient modern “current mode”
  • Relay Alarms Output
  • Suitable for parallel operation
  • Rugged design and construction for long life and   challenging environments

Optional Features

  • American Input Voltage 110 VAC ( 88 – 135 VAC)
  • Communication Port ( RS232 ASCII – SR485 – MODBUS Serial – SNMP , webpages)
  • Digital Input/Outputs: Customizable 3 digital inputs & 1 digital output.
  • Mounting: DIN rail, 19″ Rack Mount  with V/I meter available, Wall mount
  • N+1 redundancy
  • Boost Charger
  • Conformal coating for harsh environments
SR100HL - 100 w - Power Supply/Battery Charger with comms RS232 ASCII - SR485 - MODBUS Serial - SNMP , webpages

SR100HL – 100 w – Power Supply/Battery Charger with optional comms


MODELSPower SupplyBattery Charger*Adjustable range (V)
Output Volts (factory default)Output Current (A) (continuous)Output  Volts* (Charging)Output Current (A) (Charging)


Output power100W (0-50°C )
Input Voltage180V – 264VAC 45-65Hz
Output Voltages13.8V, 24, 30V, 36V, 48 VDC
Other voltages by request
Voltage Adj. Range85% – 105% of Vout
Overcurrent protectionConstant current limit under overload and short circuit conditions
IsolationInput – earth – 2.5KVdc
Output – earth – 500Vdc
Efficiency> 85%
Inrush Current< 30A , 1.8ms
Operating temperature-20  to 50 °C ambient at full load
Humidity0 – 95% relative humidity non – condensing
CoolingNatural convection
LED IndicationGreen: DC OK
Green: Power OK
Alarms RelayForm C contacts changeover, rated 30VDC,2A/110VDC,0.3A/125VAC,0.5A
DC Hight ()
POWER  (main fails, PSU fail)
DC Low  ()
Line Regulation<0.04% over input range
Load Regulation<0.5% open circuit to 100% load
Transient response200mV over/undershoot,
Load step 20-100%, 400us settling time
Hold-up time15-20 ms (nom-max. Vin) without battery


Optional Input Voltage88 – 132 VAC
Communication PortRS232 (ASCII)
Modbus RTU
SNMP, Webpages
Inputs/OutputsCustomizable 3 Digital Inputs and 1 Digital Output
Temp. CompensationTemperature sensor on 1.7m lead with adhesive pad: -4mV / °C / cell ±10%
MountingDIN Rail
19”Rack Mount – Optional V/I meter for subrack : SR-Meter
N+1 RedundancyUsing 2 chargers each with its own battery
Boost ChargerCustomizable feature on


Modbus & SNMP Downloads

SR Series – Comms Downloads

Ask for Assistance

Selecting the right power supply for your application is not a small task. Let our technical sales engineers guide you through the process of choosing the right solution for your needs.

Below some parameters usually required to size and select the right power supply:

  • Power & control requirements
  • Output & Input Voltage / Multioutput Voltage / Variable Voltage
  • Redundancy level
  • Mounting
  • Inrush Current
  • Environmental specifications (Temperature, altitude, vibration, shock)
  • Specific Industries Standards (Railway, Military, Medical)
  • Terminals

Contact Our Team

Contact our team of experienced engineers to discuss your unique power conversion and backup needs. We offer a wide range of highly reliable components that can be integrated and customized to create a solution that meets or exceeds your requirements.

For power automation systems please contact us at

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