The 24 VAC coil (50/60 Hz) pulls in reliably across the full rated control voltage range — 0.8 to 1.1 x Us at 50 Hz, 0.85 to 1.1 x Us at 60 Hz — so a saggy control transformer on a long run still holds it closed. The 45 mm width and 85 mm height keep it within the S0 footprint; depth is 140 mm, so check gland-plate clearance if the panel is shallow.
Front face carries IP20 protection — safe for finger-probe access inside a locked cabinet. The terminal area itself is IP00, meaning the screw terminals are exposed when the cover is off; standard practice is to keep the panel door interlocked or use a finger-safe shroud if live work is possible.
The 3RT1025-1AC24-0AA1-ZW97 uses a 24 VAC coil. If your panel runs on 24 VDC control, the closest peer in the same S0 frame is the 3RT1023-1AL20 (24 VDC coil). The mechanical footprint and terminal layout are identical — swap the coil voltage, not the wiring. The DC coil version draws a continuous hold current; the AC coil uses a laminated magnet and may hum if the voltage dips below the dropout threshold.