Bussmann KU12-WNUV Eaton KU series panel mount terminal block connector, 600V, 60A, Twelve-pole, Black, Molded nuclear grade noryl base, nickel-plated brass washer head

The KU12-WNUV is rated 600V and 60A per pole, across twelve poles. That covers standard 600V class control and power circuits up to 60 amps. It also carries a 105 degree C operating temperature rating, so conductor insulation on the terminations should be rated to match.

It is a panel mount terminal block connector, twelve poles on a molded base, not a distribution panelboard with a bus and breaker spaces. If you need an actual load center, look at something like the ABB ReliaGear Pro-Stock 42-circuit panelboard or the ABB MeterMod III 400A three-phase main lug panelboard instead. The Bussmann part is what you land and land-through conductors on inside an enclosure.

No. The KU12-WNUV tops out at 60A per its amperage rating, with a 600V rating and 0.625 inch center spacing across twelve poles. For a 400A three-phase main lug distribution point, the ABB MeterMod III 400A three-phase main lug panelboard is the part built for that duty. Keep the KU12-WNUV for branch terminations inside the enclosure where the 60A and 20 lb-in torque figures apply.

Tighten the washer head screws to 20 lb-in. The heads are nickel-plated brass, so an over-torqued screw strips before the conductor is secure. Use a torque screwdriver and re-check after the first thermal cycle at 60A.

You can leave poles unused, but the block is a fixed twelve-pole assembly at 3.75 inches long with 0.625 inch centers. There is no breaking it down to a shorter length. If you only need a handful of terminations and space is tight, order a lower pole count in the KU series rather than trimming this one.

The ABB MeterMod III is a 400A three-phase main lug panelboard, while the ABB ReliaGear Pro-Stock is a 42-circuit panelboard with copper bus rated 240V three-phase. One is defined by its main lug ampacity, the other by circuit count and bus material. The Bussmann KU12-WNUV is neither - it is a twelve-pole panel mount terminal block connector with a 105 degree C operating temperature and RoHS compliance, mounted inside a panel rather than replacing one.

The base is molded nuclear grade Noryl, black, and the assembly is RoHS compliant. Noryl holds dimension and dielectric strength at the 105 degree C rating, which is why this block shows up in high-temperature enclosures and utility work rather than a general purpose phenolic block.

Order Bussmann KU12-WNUV. That is the genuine Eaton/Bussmann KU series part number and it specifies the twelve-pole, black Noryl, nickel-plated brass washer head configuration in one code.