Uninterruptible Power Supply Eaton 3S550F

The Eaton 3S550F Uninterruptible Power Supply (UPS) is a standby (offline) unit with 0.55 kVA (330 W) output capacity, designed to provide power and surge protection for desktop computers, wireless networks, gaming consoles and other critical equipment at home or in small offices. It uses a sealed lead-acid battery and includes six AC outlets and a 1.5 m power cable for flexible placement. The unit is certified to CE/EAC/UKR/Cm standards and includes a CB report.

Advantages

The Eaton 3S550F offers basic battery backup and surge protection in a compact form factor. With six AC outlets it supports multiple devices simultaneously, and the sealed lead-acid battery ensures reliable short-term runtime during outages. A 1.5 m cable simplifies installation near workstations or entertainment setups, and international certifications verify safety and compliance.

Suitable for (tasks / use cases)

• Desktop PCs and workstations
• Home networking equipment and Wi‑Fi routers
• Gaming consoles and AV devices
• Small office equipment (modems, VoIP devices, POS terminals)

Key specifications

• Output power: 330 W
• Output capacity: 0.55 kVA
• AC outlets: 6
• USB ports: 1 x USB 2.0
• Battery type: Sealed lead-acid
• Cable length: 1.5 m
• Weight: 3.2 kg
• Colours: White, Black
• Certifications: CE, EAC, UKR, Cm, CB report

How to use

Place the Eaton 3S550F on a stable, flat surface near the equipment to be protected. Connect the UPS to mains power using the supplied cable, then plug your devices into the AC outlets. Turn on the UPS according to the included quick-start instructions. The device will provide surge protection during normal operation and automatically switch to battery backup during mains interruptions. Regularly check battery status and replace the sealed lead-acid battery per the manufacturer’s recommended service life.

Recommendations

To maximise protection, connect only critical equipment to the UPS and avoid overloading beyond the 330 W rating. Periodically test the battery backup by performing a controlled power cut and ensure firmware or monitoring software (if available) is configured for orderly shutdown of connected systems.