The 10 A AC-1 / DC-1 rating on the normally-open contacts governs resistive loads like heaters or lighting contactors; the normally-closed side is rated 5 A AC-1/DC-1, so if you're switching a motor starter coil or a solenoid on the NC leg, stay under that lower limit. The 2500 VA maximum switching capacity and 280 W DC limit define the absolute ceiling for inrush or inductive loads — don't exceed these even if the 10 A figure looks roomy. Coil holds at 24 V DC nominal, with a dropout threshold >= 0.1 Uc DC — about 2.4 V — so it releases cleanly on a sagging supply. The 470 Ohm coil resistance at 20 °C draws roughly 51 mA; factor that into your 24 V DC power budget if you're ganging several relays on one supply. The IP40 enclosure keeps out tools and fingers but not moisture — mount in a sealed cabinet if washdown is nearby.
Deployment context
The cylindrical pin shape fits standard 11-pin round sockets (e.g., Schneider RXZE2S114M) — common in DIN-rail-mounted terminal blocks or panel-base wiring. The lockable test button lets a commissioning engineer manually latch the relay for circuit checks without energizing the coil, then lock it out to prevent accidental operation during panel work.