DC UPS – Battery Chargers 500W

Helios Power Solutions No-Break ™ DC UPS technology represents a truly unique, comprehensive approach to providing uninterruptible and secure DC power when you need it.

No-Break ™ DC UPS systems maximise the integrity of standby battery installations, whilst optimising the life and availability of back up batteries.  They are now available with Serial and Ethernet Communications options.

 The No-Break ™ system is the ideal solution for:

  • Critical systems of 100W to 750W (and above using parallel operation)
  • Applications requiring continuous on-line monitoring of battery and charger status
  • Providing cost-effective management of your battery system investment

Other features include:

  • Ability to view power supply data remotely
  • Automatic or manually initiated battery condition testing to ensure the availability of standby power
  • The battery condition test feature of the No-Break ™ DC system determines the condition of the back-up batteries and will provide an early warning of potential failure. This gives plant operators enough warning to replace the faulty batteries before they are required, like in the event of a mains power failure. Battery condition tests are mandatory on some fire alarm systems and are now commonly specified by consultants for critical industrial systems.

Main Features

  • 12V, 24V, 30V. 36V or 48V nominal output voltage options
  • Benchtop, rack and wall mounting available
  • Optional internal meter
  • N+1 Redundancy option – use external output diode +P50
  • Communications Ports: Ethernet/SNMP v1 and RS485/Modbus
  • No-Break switching between charger & battery
  • Alarm relay outputs
  • Deep discharge protection batteries
  • Automatic temperature compensated output volts
  • 110VAC (88-132V) input voltage on request


 ModelOutput (V) PSU Rated (A)Power (W)


Input180V – 264VAC
Fusing5A input fuse and varistor
Battery fuse plus ECB for battery circuit
Overcurrent protectionConstant current limit under overload and short circuit conditions
Isolation1KV DC input – output / earth
Efficiency> 85%
Voltage adj. range85 – 105% of Vout
Temp. compensationTemperature sensor on 1.7m lead with adhesive pad:  -4mV / °C / cell ±10%
Hold-up time20 ms without battery (nominal – max. Vin)
AlarmsMains fail (or PSU in standby mode)
Battery System OK –  alarms when battery voltage low (on mains fail) , battery missing, battery circuit wiring faulty, BCT fail (if enabled)
Alarm  relay contactsC – NO – NC full changeover rated 1A /50V DC, 32VAC
AC Input ConnectorIEC320 inlet socket
DC connectionsM8 brass stud or plug-in/ screw terminal block
Alarm connectionsPlug in screw terminal block
Dimensions225W x 304D x 70H mm (excluding mounting feet and terminals)

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