3-Position 5.00 mm Pitch Plug for Unshrouded Header
The 1776263-3: It carries a 10 A UL rating at 300 V, which is the per-circuit current ceiling before the temperature rise exceeds the housing material limit.
Wire Range and Termination Detail
Accepts 16-24 AWG (0.2-1.4 mm²) solid or stranded wire. The leaf-spring clamp spreads the screw force across the conductor, so you don't get the cold-flow creep you see with a bare screw head on stranded wire. The brass contact material is tin-plated on the mating face — adequate for the moderate cycle count in a panel terminal block application, where the plug is mated and unmated a handful of times over its service life.
ROHS3 compliant. The blue housing colour is a visual match for the Buchanan series family, making field identification straightforward.
Peer Alternatives in the Series
The difference is position count: 1776263-3 is 3 positions; 1-2213934-1 is 4 positions. Other bulk-packaged Buchanan plugs (1-2305909-1, 1-2213935-1) are also active but carry different position counts — verify the number of circuits on your header before substituting.