Sizing the PCB Footprint for This 5.08 mm Pitch Block
The 282851-4: The 5.08 mm pitch is the dimension that sets the board layout — each position sits on that centerline, so the total footprint spans 15.24 mm from the first to the last position center. The green PA66 housing is rated for 300 V and carries a 17.5 A current rating per position, which means each terminal can handle a solid load circuit without derating at room ambient. The rising cage clamp termination accepts 12-30 AWG wire, and the M3 screw is torqued to 0.79 Nm (7.0 Lb-In) — that torque value is the spec to hit for reliable clamp force without stripping the brass-nickel screw.
Wiring the Clamp — What 12-30 AWG and 0.79 Nm Mean in Practice
The rising cage clamp captures the conductor between the clamp body and the screw tip. For 12 AWG solid wire, the full 17.5 A rating is available; at 30 AWG, the current should be derated because the smaller conductor cannot carry the full rating without exceeding its own temperature limit. The M3 screw with brass-nickel plating requires 0.79 Nm of torque — under-torquing leaves the wire loose, over-torquing can strip the threads in the PA66 housing. The side interlocking feature lets you snap multiple 282851-4 blocks together into a multi-position assembly without a separate mounting rail, which is useful when the board needs more than 4 positions at the same pitch.