The 3RT2038-1XF40-0LA2: It carries a 110 VDC coil and is rated 65 A at 480 V and 62 A at 600 V — numbers that tell you it handles moderate-to-heavy motor circuits without needing a larger frame.
Coil and auxiliary contact ratings
The DC coil pulls a 1.5 A inrush peak — the control transformer or DC supply needs to handle that surge without dropping below the pickup threshold. These are the numbers you use for the PLC input or status feedback circuit — don't assume the main contact rating carries over to the aux contacts.
Clearance and thermal limits for panel layout
These aren't suggestions — they're the air gaps needed to prevent arc flashover and to keep heat from building up between adjacent devices. If the panel ambient near the contactor exceeds 70 °C, you need to derate or relocate — the contactor itself can handle the cold, but sustained heat above the ceiling shortens coil life and increases contact resistance.