The AC-3 rating at 40 A is the motor-switching current; the contactor also carries AC-1 (resistive load) and AC-3e categories. It complies with EN/IEC 60947-4-1, the standard for contactors and motor-starters. The non-overlap time of 1.5 ms on energisation and de-energisation between NC and NO contacts is a safety feature that prevents simultaneous closure of normally-open and normally-closed poles during transition. Mounting is on a plate or DIN rail, so it fits standard panel layouts. The operating altitude is 3000 m without derating, useful for high-altitude installations. The TH protective treatment (pollution degree 3) per IEC 60068-2-30 means it withstands humid, corrosive environments typical in industrial enclosures.
The IP2X degree of protection means it is finger-safe but not sealed against dust or moisture.