This is typical for contactors; the panel builder accounts for it with enclosure selection.
Rated duty and motor power
In AC-3 duty — the standard category for starting squirrel-cage motors and disconnecting them under running conditions — the 3RT1024-1BM44 delivers 7.5 kW at both 500 V and 690 V. At 400 V AC-2 (slip-ring motor duty) it is rated for 5.5 kW. For resistive loads (AC-12) the maximum continuous current is 10 A. The auxiliary contact block provides 2 instantaneous contacts; their switching capacity is listed at 10 A at 24 V, 6 A at 230 V, and derated to 0.3 A at 220 V DC.
The magnet coil draws 5.4 W during both closing and holding — a DC-operated coil consuming the same power in both states, simplifying the control transformer sizing.
Main circuit terminals are screw-type, accepting 2x (1 to 2.5 mm²), 2x (2.5 to 6 mm²), or a single 10 mm² conductor. The solid/stranded auxiliary terminal range is 2x (0.5 to 1.5 mm²) and 2x (0.75 to 2.5 mm²), max 2x 4 mm². AWG equivalents for the main contacts are 2x (16 to 12), 2x (14 to 10), and 1x 8. The 150 mm depth includes the arc chamber overhang, so panel depth must accommodate it beyond the DIN-rail mounting foot.