Is the Fox ESS AC1-G2 AC1-5.0-G2 compatible with the Fox ESS EPS BOX-TP 32A?

Yes — listed by the manufacturer.

The manufacturer's published pairing data lists these together.

Minute Solar records Fox ESS AC1-G2 AC1-5.0-G2 with Fox ESS EPS BOX-TP 32A as compatible (A — Automatic). Derived from recorded specifications or compatibility groups; no manufacturer approval is recorded.

▦Manufacturer's compatibility listListed together in the manufacturer's published pairing data. A cited document reference is being added as datasheets are processed.