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Line interactive UPS.

Also written Line-interactive UPS, Interactive UPS, VI class UPS.

What is a line interactive UPS and where does it fit?

A line interactive UPS feeds the mains straight to the load, correcting it with taps on an autotransformer that lift sags and trim swells. Battery takes over only when the supply actually fails, with a transfer of a few milliseconds. Choose it for computers and network gear; loads that cannot ride that gap need double conversion.

Defined by IEC 62040-3, which groups UPS topologies by how far the output depends on the input and places line interactive sets in class VI, published by IEC.

Numeric Voltsafe PLUS Single Phase Air Cooled 1-20 kVA Range, a Line interactive UPS part supplied by Data Systems
Line interactive UPS in the catalogue: Numeric Voltsafe PLUS Single Phase Air Cooled 1-20 kVA Range, NUM-VOLTSAFE-PLUS-SINGLE-PHASE-AIR-COOLED-1-20-KVA-RANGE. Catalogue photograph.

Published by Data Systems, network material suppliers in Secunderabad, Hyderabad since 1984, which is forty years of experience with these parts. Written from the standards named above. Last checked 2026-08-14. How we check this, and what we got wrong.

Data Systems, a network material supplier in Secunderabad, Hyderabad since 1984 with branches in Vijayawada and Visakhapatnam, supplies Line interactive UPS across India through official channels. Send a list, get one quote.

Battery Solutions

Custom UPS / Power Planning

Digital HR UPS

Digital HR UPS with Inbuilt Battery

Digital UPS

HPi 33 EVO

Installation and Commissioning

Keor HPE

Keor MOD

Keor MOD+

Keor MP

Keor T EVO

Line Interactive UPS

Onfiniti+

PoE & Power

PoE Adapter

Power Strip

Premius Edge

Premius Edge Rack

Premius RT

Trimod HE

Valura

Valura IBB

Voltsafe PLUS Single Phase Air Cooled

Voltsafe PLUS Three Phase Air Cooled

Voltsafe PLUS Three Phase Oil Cooled

Where it is used

Related terms

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Data Systems · +91 99595 55222 (call or WhatsApp) · admin@datasystems.co.in · Secunderabad (HQ) · Vijayawada · Visakhapatnam · Mon to Sat, 9:30 to 7

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