UPS APC Back-UPS CS 500 BK500EI 500VA/300W 4x IEC C13 230V Tower Beige

APC Back-UPS CS 500VA - Reliable Power Protection (BK500EI)

The APC Back-UPS CS 500 (2026 Edition) is a professional-grade Uninterruptible Power Supply (UPS) designed to provide essential battery backup and surge protection for home offices and small business workstations. This "BK500EI" model delivers up to 500VA / 300W of power, ensuring that your computer, monitor, and networking equipment stay online during short-term power outages, allowing for a graceful system shutdown. It features four IEC 320 C13 outlets—three with battery backup and surge protection, and one dedicated solely to surge protection for non-critical peripherals like printers. With integrated lightning protection and phone/fax/modem line surge suppression, the Back-UPS CS is a compact and dependable solution for safeguarding sensitive electronics from unpredictable power fluctuations.

Technical Specifications

* Model: APC Back-UPS CS 500

* SKU/Part Number: BK500EI

* EAN: 0731304016359

* Power Capacity: 500VA / 300 Watts

* Nominal Output Voltage: 230V

* Output Connections: 3x IEC 320 C13 (Battery Backup), 1x IEC 320 C13 (Surge Only)

* Input Connection: IEC 60320 C14

* Battery Type: Sealed Lead-Acid (Maintenance-free, leak-proof)

* Typical Backup Time: ~14 minutes at half load (150W), ~3 minutes at full load (300W)

* Surge Energy Rating: 310 Joules

* Data Line Protection: RJ-11 Modem/Fax/DSL protection (two-wire single line)

* Management: USB or Serial (via RJ45 to USB cable)

* Form Factor: Tower

* Dimensions: 165 x 91 x 284 mm (6.5 x 3.6 x 11.2 inches)