The IP20 front protection and ATEX approval (DMT 98 ATEX G 001) suit it for use in potentially explosive atmospheres where overcurrent protection must fail safe on demand.
The 3-pole main circuit handles three-phase loads, and the screw-type terminals on both main and auxiliary circuits accept solid conductors from 0.5 mm² up to 2.5 mm² (2× per clamp), with AWG equivalents from 20 to 14 for the main circuit. For finely stranded conductors with ferrule, the same cross-section range applies. The auxiliary contacts are rated at 1 A at 24 V, 3 A at 120 V, and 2 A at 230 V — sufficient for signaling to a PLC or safety relay. Relative humidity during operation can reach 100 % — condensation is acceptable, though the IP20 front means the relay itself is not sealed against water jets; it relies on the enclosure for washdown duty.
Deployment context
This relay is designed for contactor mounting — it snaps directly onto a Siemens SIRIUS S00 contactor, forming a compact motor starter assembly. In a panel, it integrates as the overload protection element in a motor control center (MCC) or standalone starter, with the auxiliary contacts feeding status back to the control system.