US-S / US-R Split-Phase Inverter
Two live legs, a neutral that carries the imbalance, and a CT that keeps the utility happy — a split-phase inverter built for the North American panel.
The US market is where split-phase faults are most common, and most of them come from treating a 120/240 V panel as if it were a 230 V single-phase panel.
The US-S/US-R series lands L1, L2, N and PE separately, carries the neutral imbalance, and tolerates the surge of a well pump or an air conditioner. The anti-reflux CT is supplied rather than optional, because a zero-export requirement is the norm rather than the exception in that market.
The battery-free option is worth noting in quotations: it lets a customer install PV now and add storage later, which often closes a sale that a battery-included quote would lose.
Available models1 series
| Model | Type | Typical applications | Notes |
|---|---|---|---|
 US-S / US-R Series
|
Split-phase 120/240 V hybrid inverter, US market | US residential backup, off-grid cabins, workshops, small commercial 120/240 V systems | Split-phase output requires both L1 and L2 landed and a neutral sized for the imbalance |
Models with links have detailed specification pages; unlisted models are also available on request. Capacity and quantity should be sized by our engineers against the actual load — never by nameplate rating alone.
US-S / US-R Split-Phase Inverter — frequently asked questions
Which models are 120 V only?
Is a neutral required?
Can it be paralleled with a generator?
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