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A line-interactive UPS uses automatic voltage regulation (AVR) to correct high or low mains voltage without switching to battery, which saves battery wear. PowerShield builds two line-interactive ranges: the Defender (simulated sine wave, 650 to 2000VA tower plus 800VA and 1500VA rackmount) and the Commander (pure sine wave, 1100 to 3000VA tower and 2U rack/tower).

The powerboard-style SafeGuard is also line-interactive and sits in compact UPS.

New to PowerShield? Compare every range on our PowerShield Australia hub.