Torus Series Mode Surge Suppression

Torus PIUs use series mode surge suppression which absorbs surges more than two volts above peak line voltages. Torus surge suppression meets IEEE endurance standards of 6000V, 3000A with 1000 repeats. Torus Technology allows for the replacement of a series inductor with the Torus isolation transformer. The transformer has lower stray fields and higher current capabilities than the typical series inductor.
Most surge-suppression circuits are shunt-mode. Excessive voltage surges are "shunted" to ground, which raises ground voltage and may contaminate audio and video signals. Shunt-mode surge protectors usually use MOVs (metal oxide varistors) which are sacrificial components, and usually become ineffective over time.

- Protects against spikes and surges starting 2volts above peak line voltages! – Withstands up to 6000 volts, 3000 amps with 1000 repeats – No failure-prone MOVs