Eaton EHD3045L Eaton Series C complete molded case circuit breaker

Yes. The EHD3045L is a three-pole F-frame breaker rated 18 kAIC at 240 Vac and 14 kAIC at 480 Vac, so it can be applied at 480 Vac as long as the available fault current at that point in the system is at or below 14 kA. On a 240 Vac system you get the full 18 kAIC. Frequency rating is 50/60 Hz, so it suits both domestic and export equipment.

It ships as a complete breaker. The EHD3045L is an Eaton Series C molded case unit with line and load terminals already installed, so there is no separate trip unit, rating plug, or terminal kit to order to make it functional. Mounting hardware and any accessories such as handle locks or lugs for larger conductors are separate items.

No. The EHD3045L uses a fixed thermal, fixed magnetic trip unit, so both the overload and the instantaneous pickup are set at the factory and cannot be field adjusted. It is a straight 45 A three-pole breaker. If your coordination study calls for an adjustable instantaneous setting, you need a breaker with an adjustable or electronic trip rather than this fixed-trip EHD.

Yes, the manufacturer part number is EHD3045L, matching one for one. It is the Eaton Series C three-pole 45 A F-frame unit with fixed thermal-magnetic trip and line and load terminals. Because the catalog number encodes the frame, poles and ampere rating, an exact number match means the same mounting footprint and the same trip characteristic as the unit you are pulling out.

The EHD3045L is an EHD-type breaker on the Eaton F-frame. Within the F-frame family the type letters identify the interrupting capacity, not the physical size, so an ED, EHD, FD and similar unit of the same ampere rating share the frame but differ in how much fault current they can clear. The EHD3045L is the 18 kAIC at 240 Vac / 14 kAIC at 480 Vac version. Pick the type by the available fault current at the panel, then the ampere rating by the load.

The breaker measures 6 x 4.13 x 3.38 inches (height, width, length as published by Eaton) and weighs 4 lb. That is the standard Eaton F-frame envelope for a three-pole unit, so it drops into panelboards and enclosures prepped for an F-frame breaker. Check your gutter space against the 3.38 inch depth before closing up a shallow enclosure.

It is built as a three-pole device, so all three poles trip together and the breaker occupies three spaces. You can land a two-wire load on two of the poles electrically, but if your panel only has two spaces or your schedule calls for a two-pole breaker, order the two-pole version of the EHD rather than this one. The 240 Vac interrupting rating is 18 kAIC either way.