The 73 mm depth leaves clearance for wiring ducts and adjacent devices.
The AC-12 rating of 10 A at 24 V and 6 A at 230 V defines its capability for switching resistive and solid-state loads in control circuits — not motor starting. The 4 NO contacts give you four independent signal paths; if you need a mix of NO and NC, this part is all NO. The operating range of 0.8 to 1.1 times rated voltage at 50 Hz and 0.85 to 1.1 at 60 Hz means the coil holds in across typical line fluctuations, but below 0.8 × rated voltage it drops out — plan your control transformer sizing accordingly.
The shock resistance of 10 g at 5 ms and 5 g at 10 ms means it holds up on machinery with moderate vibration — not for extreme impact environments like stamping presses without additional damping.