The IP20 front protection means the terminals are finger-safe once installed, but the contactor itself is not sealed against washdown — it lives inside a control cabinet.
The thermal current at 24 V is 10 A, which governs the resistive load it can switch continuously at that voltage. At 230 V 50/60 Hz the rated current drops to 6 A, and at 690 V it is 1 A — the contact gap and arc extinction limit the switching capacity as voltage rises. The 6 kV rated surge voltage resistance means the contactor handles transient overvoltages common on industrial 400 V lines without flashover. Contact reliability is specified as one incorrect switching operation per 100 million cycles at 17 V, 1 mA — that is a dry-circuit rating for low-energy signal switching, not just power contacts.
Shock resistance is 10g at 5 ms and 5g at 10 ms — adequate for machine-mounted panels on presses or conveyors, but not for direct mounting on a vibrating motor frame.