Fox ESS · 1-phase · whole-home EPS backup box
Fox ESS single-phase whole-home EPS box
The Fox ESS single-phase EPS box is a whole-home backup box for installers adding full-property backup to a Fox storage system. Its natural home is the retrofit visit: a customer with an existing single-phase system who now wants the whole house to stay on during an outage rather than a single protected circuit.
Delivery in 3–5 working days (estimate). The dispatch clock starts at cleared payment.
Description
Backup is an easy upsell to quote and a fiddly one to deliver without the right hardware. This box is Fox's own answer for whole-home coverage on single-phase systems, which keeps the design inside one manufacturer's ecosystem. For a trade buyer the appeal is standardisation: fit the same box on every backup job and the crew stops relearning the wiring on each visit. The page price is the ex-VAT trade price, unchanged whether you order one for a survey-confirmed job or several for the pipeline.
Specification
| Brand | Fox ESS |
|---|---|
| Part number | FE-EPS-BOX-SP |
| Phase | Single-phase |
| Condition | New |
| Category | Parts & accessories · Accessory |
| Delivery method | Parcel courier |
What it pairs with
Pair it with Fox's single-phase hybrid inverters: the H1 Gen 2 range and the K series single-phase hybrids both sit in the same catalogue, and the H1 models are listed with EPS capability by name. Backup wiring depends on the inverter model and firmware, so verify the combination on Fox's current pairing list before committing the design.
Single-phase systems only. It is the backup box alone; inverter and batteries are separate lines. For anything this page can't settle, ask the trade desk before ordering or consult a competent installer.
Often bought alongside
Last updated 2026-07-19