B-Line Eaton Series C DC/PvGard complete , F-, HFD, Complete , Fixed thermal, fixed magnetic trip type, Two-pole, 80A, 600 Vac, 250 Vdc, 42 kAIC at 6

Yes. The HFDDC2080L is an Eaton Series C DC/PvGard molded case breaker rated 250 Vdc as well as 600 Vac, and Eaton classes it as a Vdc device for high interrupting capacity in DC applications. It is a two-pole, 80A breaker, so on a DC circuit both poles are used in series for the single DC circuit in typical PV practice. Do not apply it above 250 Vdc.

42 kAIC at 600 Vac. The HFD suffix is Eaton's high interrupting capacity F-frame class, which is what you specify when the available fault current at the panel exceeds what a standard FD frame breaker can clear.

The breaker measures 6 in high, 2.75 in wide and 3.38 in deep, and weighs 3 lb. That is the standard Eaton F-frame footprint, so if the panel or enclosure is already prepped for an F-frame two-pole breaker the mounting works out.

Line and load terminals are included, and it ships as a complete breaker rather than a breaker mechanism needing separate assembly. Confirm the lug wire range suits the conductor size you are landing for an 80A circuit.

No. It is a fixed thermal, fixed magnetic trip breaker, so the 80A thermal setting and the instantaneous magnetic pickup are both factory set with nothing to dial in the field. If your coordination study calls for an adjustable instantaneous setting, this is the wrong trip type and you need an adjustable-magnetic version of the frame.

Not interchangeably. A DC arc does not self-extinguish at a current zero the way an AC arc does, which is why Eaton builds the DC/PvGard version with a specific 250 Vdc rating alongside the 600 Vac rating. Use a breaker that carries a published DC voltage rating for the DC side of a PV system; the HFDDC2080L is rated for both.