What the 1600 A rating means for the panel
The ENW22344 is a chassis from the EasyPact NW range, rated 1600 A at 40 °C across three poles. That 1600 A figure is the continuous current the main contacts carry without exceeding the temperature rise limit — it's not a peak or a short-time rating. For a site electrical engineer planning a main breaker or a tie, this is the number that sizes the bus bars and determines the switchboard's thermal budget. The H breaking capacity code tells you the interrupting rating at the rated voltage; pair it with the upstream transformer impedance and cable length to confirm the fault current it can clear.
Drawout mounting and panel integration
Drawout mounting means the chassis slides into a fixed cradle — no need to disconnect the main power cables for routine inspection or replacement. The 445 mm depth, 400 mm width, and 440 mm height define the cutout and the clearance for the racking mechanism. For the panel OEM, the drawout feature adds a few minutes to the initial install but saves hours on any future swap-out. Verify the cradle interlock is wired into the control circuit so the chassis cannot be withdrawn under load.