APS Back-UPS CS 650VA 400W 230V DB-9 RS-232/USB

£105.79 includes FREE UK Postage (other delivery options available)

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The re-invention of the most relied upon desktop UPS in history: the Back-UPS! The Back-UPS CS offers our best value for protecting your business and office computer systems. It provides battery backup power that allows you to work through short and medium length power outages. It also safeguards your equipment from damaging surges and spikes that travel along your utility and phone lines. Award-winning shutdown software automatically powers down your computer system in the event of an extended power outage. Additional features like audible alarms, LED status indicators, user replaceable battery, push-button circuit breakers and transformer-block spaced outlets make the Back-UPS CS the perfect unit to protect your business' productivity from the constant threat of power outages and lost data.


Best Value Battery Backup and Protection for Business Computers. APC Back-UPS CS, 400 Watts / 650 VA,Input 230V / Output 230V, Interface Port DB-9 RS-232, USB.


Two years repair or replace.


Input Connection type

IEC-320 C14

Output Connections

(1) IEC 320 C13 (Surge Protection) • (3) IEC 320 C13 (Battery Backup) • (2) IEC Jumpers (Surge Protection)

Typical backup time at half load

14.8 minutes

Typical backup at full load

4.7 minutes

Typical recharge time

8 Hours

Interface Port

DB-9 RS-232, USB

Battery Type

Maintenance-free sealed Lead-Acid battery with suspended electrolyte : leakproof

Control Panel

LED status display with On Line : On Battery : Replace Battery and Overload indicators

Audible Alarm

Alarm when on battery : distinctive low battery alarm : overload continuous tone alarm


Output Capacity


Output Wattage


Output Voltage


Input Voltage Range

180 to 260VAC


Surge Energy




Operating Temperature 0 to 40°C - Humidity 5 to 95%

Noise Level




A-tick, C-tick, CE, GOST, NEMKO


Case Colour


In The Box

Back-UPS CS 650VA, CD with software, Documentation CD, Qty 2 - Detachable IEC C13 to IEC C14 power cords, USB cable


9.1cm (W) x 28.4cm (D) x 16.5cm (H) - Weight 6.03kg


  • APS Back-UPS CS 650VA 400W 230V
  • Input Connections: IEC-320 C14
  • Output connection: (1) IEC 320 C13 (Surge Protection) • (3) IEC 320 C13 (Battery Backup) • (2) IEC Jumpers (Surge Protection)
  • Interface Port(s): DB-9 RS-232, USB
  • Maintenance-free sealed Lead-Acid battery with suspended electrolyte : leakproof
  • Serial Connectivity provides management of the UPS via a serial port
  • Serial Connectivity: Use any Home Automation network to monitor and control the S20 through its RS-232 serial port. For information on how to communicate with the S20, see APC's Application Note #102. Crestron and AMX installers should visit their respective websites for information on how to integrate the S20 into those networks
  • USB Connectivity: Provides management of the UPS via a USB port (not available on all models)
  • Colour: Beige
  • Two years repair or replace

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Catalogue No: EL-00012382