SIRIUS 3RT2017-4KB42 — Coupling Contactor for DC Load Circuits
It mounts via screw or snap-on onto 35 mm DIN rail per DIN EN 60715, fitting a 45 mm wide x 58 mm tall x 73 mm deep footprint — standard for the S00 block contactor family. Its DC switching capability is defined across multiple voltage levels: 10 A at 24 V, 2 A at 48 V, 2 A at 60 V, 1 A at 110 V, 0.9 A at 125 V, 0.3 A at 220 V, 3 A at 400 V, 0.2 A at 440 V, 11 A at 480 V, 2 A at 500 V, and 11 A at 600 V. These ratings dictate the maximum resistive DC load the contactor can break — critical for sizing in battery-backed or rectified DC bus circuits where the arcing time (10–15 ms) and DC switching time (7–20 ms) govern contact life. The coil picks up at 70% of rated voltage (16.8 V for the 24 V coil) and holds across the full operating range of -25 °C to +60 °C ambient, with storage from -55 °C to +80 °C. Maximum switching frequency varies by duty: 1000 cycles/hour at AC-1 (resistive), 750 cycles/hour at AC-2 and AC-3 (motor starting/running), and 250 cycles/hour at AC-4 (plugging/inching) — the AC-4 limit governs the most demanding reversing or jogging applications.