What you're actually mounting
The G7L-1A-TUBJ-AC100/120: For an apprentice trying to follow the BOM, this part reads as the SPST switching element you drop into a control panel to drive a heater bank or a solenoid cluster from a 100/120 VAC control source — the kind of device the junior wires into a socket and the lead verifies against the wiring diagram before energising.
Reading the maturity flag honestly
No official LTB or successor is published in the data on hand for this code, so the practical move is to pin a known cross-reference against your own drawings before the next panel build goes out — ask the dumb question now rather than discover the socket is empty during commissioning.