It carries a 12 A rated operational current (Ie) across three poles, matching the contactor frame it serves. Per the specification, this is a connection accessory — it provides the pre-assembled power wiring between the forward and reverse contactors, saving panel-build time on reversing circuits.
What the 12 A rating means for fit
The 12 A rated operational current is the continuous current the connection set is designed to carry in a reversing motor starter configuration. It matches the AC-3 motor-switching capability of the LC1E09 contactor (9 A) and exceeds the LC1E06 (6 A), so the connection set does not become the bottleneck in the power path. For a 3-pole reversing circuit, the set handles the interlocked forward/reverse bus wiring, and the 12 A rating covers the full range of LC1E06...E12 contactors without derating.