Burndy KA40U-2N Mechanical Lug

The Burndy KA40U-2N is an aluminum universal mechanical lug for a single conductor in the 300–800 kcmil range, featuring two mounting holes and a 1/2" stud for a secure connection in panelboards and switchgear. It is dual-rated for aluminum and copper conductors and tin-plated to minimize contact resistance, with a voltage rating up to 35 kV and UL-listed, CSA-approved, Buy America-qualified construction. The lug uses a single screw in its fastener arrangement and a two-hole footprint with 1/2" bolt holes and 0.56" (14 mm) hole size; its stud is 1/2" and the stud-hole spacing is 1-3/4" (44 mm). Overall dimensions are 4.75" long, 1.75" wide, and 1.95" high (approximately 121 x 44 x 49.5 mm), with a depth of 3.03" (77 mm). Conductor ranges cover copper or aluminum from 300 to 800 kcmil, and the recommended installation torque is 500 in-lbs. The KA40U-2N belongs to Burndy’s KA-U universal terminal family, constructed from a high-strength extruded aluminum alloy and electro tin-plated to ensure reliable, low-resistance terminations in distribution equipment. Typical applications include panelboard lugs and switchgear terminations where a compact, durable lug for a single conductor is required.