KXT5CUAL2X500K-3PC

What is this component used for?

This component is a breaker lug kit used to terminate incoming and outgoing power conductors on compatible XT5 circuit breaker assemblies. It is typically selected when a breaker needs field-installed line and/or load lugs rather than a fixed terminal arrangement.

What conductor range does it accept?

For the lug itself, the listed conductor capacity is two conductors per pole in the range of #2/0 AWG to 500 kcmil, for copper or aluminum conductors where the connected equipment is marked for Cu-Al use. In some enclosed breaker applications, enclosure limitations can reduce the usable maximum conductor size.

Is this designed for copper, aluminum, or both?

It is intended for copper or aluminum conductors when the breaker and lug markings permit Cu-Al termination. The associated enclosure drawings also specify the use of 75°C conductors.

Is this a 3-pole or 4-pole lug kit?

This version is intended for 3-pole applications. A separate 4-pole version is listed alongside it in the enclosure documentation, which helps distinguish this configuration from the 4-pole option.

How many conductors can be landed per pole?

This lug arrangement is designed for dual-conductor termination, allowing two conductors per pole within the stated wire range. That makes it useful in installations where parallel or paired conductors are required at the breaker connection point.

How many kits are normally needed for one breaker?

If lugs are required on both ends of the breaker, the documentation states that one kit is ordered for the line end and one kit is ordered for the load end. In other words, a single breaker may require two kits when both sides need lug terminations.

Can it be used in enclosed breaker assemblies?

Yes. KXT5CUAL2X500K-3PC is listed in documentation for several XT5 enclosed breaker arrangements, including indoor Type 1, rainproof Type 3R, and other enclosure variants. Suitability still depends on the exact enclosure rating and available conductor space.

Can it always accept 500 kcmil conductors in an enclosure?

Not in every enclosure configuration. While the lug catalog data lists a range up to 500 kcmil, some 400A enclosure documents limit the practical wire size to 250 MCM CuAl. For that reason, the breaker lug range and the enclosure wire-space limit should be checked together.

Is this the same as a neutral assembly or ground kit?

No. This is a circuit breaker lug kit for the breaker terminals. Neutral assemblies and ground kits are listed separately in the same documentation and serve different functions within the enclosed breaker assembly.

What should be checked before selecting this lug kit?

The main points to confirm are breaker pole count, breaker frame/application, conductor material, conductor size, whether one or both ends of the breaker need lugs, and whether the breaker is installed in an enclosure that imposes a lower wire-size limit. These checks help confirm that the selected lug kit matches the physical and electrical requirements of the installation.