Uninterruptible Power Supply (UPS) EATON 3P ELLIPSE 550 3P550D 550 VA 3-phase

EATON 3P ELLIPSE 550 (model 3P550D) is a three-phase uninterruptible power supply with a rated capacity of 550 VA. It provides short-term backup power and power-conditioning for three-phase systems, protecting connected equipment from outages, voltage sags, surges and transient disturbances. The unit is intended for small commercial installations, network cabinets and critical loads where uninterrupted supply or orderly shutdown is required.

Advantages

The UPS delivers stable three-phase output and fast transfer to battery operation to minimize downtime. Compact footprint and straightforward installation allow integration into existing electrical panels and network racks. Integrated protection features help reduce the risk of equipment damage from overvoltage, undervoltage and short interruptions, while internal monitoring supports basic fault detection and status reporting.

Suitable for

• Small commercial electrical panels and sub-distribution boards
• Network cabinets and telecommunications equipment
• Industry control cabinets and PLCs requiring short-term backup
• Server rooms with light three-phase loads and orderly shutdown needs
• Point-of-sale systems and building management controllers on three-phase supplies

Key specifications

• Output topology: three-phase UPS providing conditioned AC power
• Rated capacity: 550 VA
• Protection features: protection against outages, voltage sags and surges
• Transfer time: rapid switchover to battery power to maintain load continuity
• Form factor: compact unit suitable for installation in electrical cabinets and racks
• Monitoring: built-in status indicators and basic fault detection

How to use

Install the UPS in accordance with local electrical regulations and the manufacturer's installation instructions, mounting it in a dry, ventilated environment near the protected equipment. Connect the three-phase supply and the output feeders to the intended distribution circuits, ensuring correct phase sequence and secure terminations. Verify battery presence and charge state before placing critical loads on the unit. During normal operation the UPS will condition mains power and automatically transfer to battery when a mains fault is detected. Periodically check status indicators and perform battery tests as part of routine maintenance.

Usage recommendations

Place the UPS in a cool, dust-free location with sufficient clearance for ventilation and service access. Schedule regular battery inspections and replace batteries according to the manufacturer's recommended interval or when capacity falls below acceptable levels. Avoid connecting loads that exceed the rated 550 VA capacity and segregate sensitive equipment circuits to ensure proper protection and orderly shutdown when needed.