The 24 V AC coil keeps the control circuit low-voltage, common in PLC-driven panels.
The AC-3 utilisation category at 6 A is the headline rating: it confirms the contactor can break motor locked-rotor current (typically 6–8× FLA) and make the inrush without welding contacts. If your motor full-load amps are under 6 A, this part fits. The AC-3e rating (same current) adds a low-energy switching variant for electronic motor starters. The AC-1 resistive rating covers heater banks or lighting loads up to the same 6 A. The 24 V AC coil draws a modest inrush; the non-overlap time of 1.5 ms on both energisation and de-energisation ensures that NC and NO contacts never close simultaneously — important for reversing starters or interlock circuits where a momentary cross-conduction could short phases.
At 45 mm wide and 74 mm tall, it fits a standard 8-module spacing on a DIN rail — leaving room for an overload relay or auxiliary contact block alongside. Depth is 80 mm, so it clears most 100 mm deep enclosures with a bit of wiring space behind.
Also carries GB/T equivalents for China-market installations. The IP2X degree of protection means it's finger-safe on the front but expects enclosure protection for the terminals.