It terminates wires via a screw-driven rising cage clamp — the screw tightens a brass clamp plate that pulls the wire up against the current bar, giving a gas-tight connection without a ferrule. The green PA66 housing is the classic Buchanan colour, and the side interlocking feature lets multiple blocks snap together side-by-side to form a multi-position strip without extra hardware.
Ratings That Drive the Fit
24 A per position is the headline rating — that is bus-level current for a terminal block this size, suited for feeding a power rail or distributing load to several downstream circuits. The 300 V rating pairs with the 5.08 mm pitch to give enough creepage between adjacent positions for industrial control panels. The M3 screw with a specified torque of 0.79 Nm (7.0 Lb-In) is a real installation parameter: the PA66 housing strips if over-torqued, so the torque spec is there to follow, not a suggestion. The rising cage clamp accepts 12-30 AWG wire — the clamp opens wide enough for 12 AWG stranded power wire but still grips 30 AWG signal wire reliably. Brass contacts with tin plating are standard for this class: tin is fine for the few insertion cycles a terminal block sees, and it avoids the galvanic corrosion risk gold would have with the brass screw.