Uninterruptible power supply UPS Eaton 3S850D

The Eaton 3S850D Uninterruptible Power Supply (UPS) is a standby (offline) unit that delivers 0.85 kVA (510 W) of backup power and surge protection for desktop computers, wireless networks, gaming consoles and other critical home or business equipment. The UPS includes eight AC outlets, uses Sealed Lead Acid (VRLA) battery technology and comes with a 1.5 m power cable. It is certified to CE, EAC and other relevant safety reports.

Advantages

The Eaton 3S850D offers compact and easy-to-install standby power protection with multiple AC outlets to safeguard several devices simultaneously. Its VRLA battery provides reliable short-term backup during outages while built-in surge protection helps reduce the risk of damage from voltage spikes. The unit’s available certifications ensure compliance with common safety standards.

Suitable for

• Desktop PCs and workstations
• Home network equipment and wireless routers
• Gaming consoles and entertainment systems
• Small office devices (modems, VoIP phones, NAS)

Key specifications

• Output power: 510 W
• Output power capacity: 0.85 kVA
• Topology: Standby (Offline) UPS
• AC outlets: 8
• Battery type: Sealed Lead Acid (VRLA)
• Cable length: 1.5 m
• Product colours: White, Black
• Weight: 4.3 kg
• Certifications: CE, EAC, CB report (and others as listed)

How to use

Place the Eaton 3S850D on a stable, flat surface near the protected equipment and a grounded AC outlet. Connect your devices to the UPS’s AC outlets, plug the UPS into mains power using the supplied 1.5 m cable, and allow the internal battery to charge before relying on backup. During a power outage the UPS will switch to battery power automatically; monitor battery status and replace the VRLA battery according to the manufacturer’s service recommendations.

Recommendations

For best results, connect only essential devices whose combined load does not exceed the UPS’s 510 W output rating, avoid placing the unit in damp or dusty locations, and ensure periodic testing and battery replacement to maintain reliable backup and surge protection.