PRODUCT OVERVIEW

Eaton 93E20KMBSB 3-Phase Online UPS

The Eaton 93E20KMBSB is a high-reliability 20 kVA / 18 kW three-phase online uninterruptible power supply (UPS) designed to deliver continuous, double-conversion power protection for critical electrical and IT infrastructures. Built around Eaton’s 93E series architecture, this UPS offers robust voltage conditioning and full isolation from mains disturbances, making it ideal for small to medium data centres, industrial facilities, telecommunications equipment rooms, and facility infrastructure. The unit is configured as a free-standing tower model with a built-in internal maintenance bypass switch (MBS) for safe servicing without interruption of critical loads.

Electrical Performance and Power Characteristics

The 93E20KMBSB operates on a three-phase input and three-phase output with a nominal output capacity of 20 kVA (18 kW) at a 0.9 power factor, providing efficient use of UPS capacity for balanced loads. It employs online/double-conversion topology, which continuously regenerates clean AC power to connected equipment, ensuring immunity from surges, sags, and frequency anomalies. The output voltage range and frequency are programmable within 380 V to 415 V and 50/60 Hz, respectively, accommodating diverse system requirements.

Efficiency, Topology, and Operational Features

This UPS delivers high energy efficiency with up to 98 % eco-mode efficiency in normal operation, reducing both operating costs and heat dissipation in facility environments. The overall online conversion efficiency is around 94 %, combining reliability with energy-efficient performance. An internal maintenance bypass allows for safe unit servicing without load interruption, and the online zero-transfer-time operation ensures seamless power continuity to mission-critical loads. Audible alarms and an intuitive graphical LCD interface provide status feedback and diagnostics during operation.

Battery Integration and Expandability

The Eaton 93E20KMBSB does not include internal batteries by default; instead, it is designed to be connected to external battery cabinets or modules via a hardwired external battery connection. Eaton offers battery kits and external battery solutions tailored to runtime requirements, enabling scalable backup durations based on installation needs. The ABM-type charger system provides efficient charging and battery management, improving battery life and performance.

Physical, Compliance, and Integration Details

The unit measures approximately 500 mm (width) × 710 mm (depth) × 960 mm (height) and weighs roughly 145 kg, reflecting a robust industrial design suited to facilities and data centre installations. It is CE-marked and complies with international UPS safety and electromagnetic compatibility standards including IEC/EN 62040-1, IEC/EN 62040-2, and IEC/EN 62040-3. Two communication slots allow for optional management interface cards, while standard USB and RS-232 interfaces support basic monitoring and integration with building management or network management systems. Parallel capacity and redundancy configurations allow up to four units to be connected for higher availability or increased power capacity.