Part identity and what it does
The 1NO auxiliary contact gives you one feedback or interlock signal without adding a side-mount block.
AC-3e extends the rating to energy-efficient motors with higher inrush. The 24 V AC coil is common in older control transformers; verify your control voltage matches because AC coils draw higher inrush than DC and won't pick below about 20 V.
Rated for -25 to 50 °C ambient operation and -50 to 80 °C storage. The contactor holds closed through 10 Gn shocks on Y and Z axes, 6 Gn on X when open — enough for most industrial panel environments. V1 flame retardance per UL 94 and NF F 16-101/102 covers rail and industrial fire-safety requirements. Altitude derating starts above 2000 m.
The contactor measures 90 mm wide by 58 mm high by 57 mm deep. The preassembled reversing busbar saves panel space compared to wiring two separate contactors with an interlock, but the 90 mm width means you need that much rail per reversing pair. The 3 NO power poles are all main contacts; no built-in NC for mechanical interlock — that's handled by the busbar and the contactor's own interlock mechanism.