The LP1D65004RD: The 80 A rating is under AC-1, which covers resistive loads — heaters, lighting banks, non-inductive circuits. For motor duty (AC-3), the rated current will be lower; the datasheet's AC-3 figure governs the real motor branch circuit. The 440 V operational voltage matches standard three-phase distribution in many industrial and commercial panels. Four poles give you the ability to switch all three phases plus a neutral, or use the fourth pole for an auxiliary load. The open-frame design (no protective cover) means it's intended for enclosed panel mounting, not standalone exposed installation. Physical footprint: 7.2 in (182 mm) deep, 3.3 in (85 mm) wide, 5 in (127 mm) tall. That's a standard TeSys D envelope — fits the same DIN-rail or screw-mount pattern as other TeSys D contactors, so a panel layout swap from a different rating in the same family doesn't require re-drilling.
The 4-pole width is the same as a standard 3-pole plus one auxiliary block, so panel fill factor is predictable. Operating ambient range from -40 to 140 °F (-40 to 60 °C), with derating above 140 °F — fine for most ventilated enclosures but worth noting if the panel sits near a heat source.