Identifying differences between two similar part numbers.
IEC contactors and starters
Products sold and used in the United States
Choosing the correct part number
LAD7305 is for use on LRD01 to LRD35 , LR3D01 to LR3D35, and LRD313 to LRD365.
LA7D305 is for use on all other relays (except LRD01 to LRD35 and LR3D01 to LR3D35).