Where it fits in a manual motor starter build
Manual motor starter accessories of this class mount onto the matching ABB motor-starter body and carry the auxiliary or interface function the starter body itself does not include — so the BOM line for 1SAM250000R1005 is justified only alongside the parent starter it pairs with, not as a standalone control part. The accessory record on file does not name a specific parent starter, so the right pairing is confirmed against the parent starter's accessory list rather than inferred from this row. Treat it as a critical spare for the starters already on the shelf: one missing accessory can hold the starter body out of service even when the body itself is healthy.