The APC Back-UPS BE550G is a passive standby uninterruptible power supply rated at 550 VA / 330 W, designed to protect connected equipment from power disturbances through battery backup and surge suppression. The unit features eight NEMA 5-15R outlets: four outlets provide both battery backup and surge protection, while four outlets deliver surge protection only. A maintenance-free, sealed lead-acid battery delivers 3.30 minutes of runtime at full load and 13.50 minutes at half load, with typical recharge time of one day. The battery is user-replaceable (RBC110 cartridge) and backed by intelligent management with automatic failure and disconnect notifications.
Technical Specifications
• Power Rating: 550 VA / 330 W
• Topology: Passive Standby
• Input: 120 V AC nominal, 120–120 V AC range, 60 Hz, voltage and frequency dependent
• Brownout Transfer Threshold: 180 Vrms typical
• Over-voltage Transfer Threshold: 139 V AC typical
• Output: 120 V AC nominal, stepped approximated sine wave, 60 Hz, voltage and frequency dependent
• Surge Energy Rating: 340 Joules
• Surge Let-Through: 5% IEEE
• Clamping Response Time: Zero
• Battery Chemistry: Sealed lead-acid with suspended electrolyte
• Battery Life Expectancy: 3–5 years
• Data Line Protection: RJ-11 (phone/fax/modem/DSL)
• Network Protection: 10/100 Base-T Ethernet (RJ-45)
– Key Features
• Eight outlets with mixed protection topology—four battery + surge, four surge only
• Automatic voltage regulation with brownout and over-voltage sensing
• Hot-swappable, user-replaceable lead-acid battery cartridge
• Intelligent battery management with failure and disconnect notifications
• USB communication interface with Power Summary protocol
• RJ-11 and RJ-45 surge protection for communications lines
• Outlet spacing accommodates large power adapters and transformer blocks
– Typical Applications
Desktop computing systems, network peripherals, phone systems, modems, and consumer electronics requiring sustained operation during utility power loss or transient voltage events.
– Compatibility & Integration
USB connectivity enables real-time power status monitoring and automated shutdown procedures via USB Power Summary protocol. Standard NEMA 5-15P/R receptacles ensure broad compatibility with North American equipment.
