It switches control and signal circuits in motor starter and contactor assemblies, extending the main contactor's auxiliary contact count for status feedback, interlocking, or PLC input mapping. The coil draws 4 W closing and 4 W holding, so the power supply budget is straightforward — no inrush surprise on a 24 VDC control transformer. The S00 footprint (57.5 mm high, 90 mm wide, 73 mm deep) fits standard panel layouts alongside S00 or S0 contactors.
The 3 NO contacts carry 10 A at 24 V and 230 V, 4.7 A at 60 V, 3 A at 110 V, 1.2 A at 220 V, 3 A at 400 V, 0.5 A at 440 V, 2 A at 500 V, 0.26 A at 600 V, and 1 A at 690 V. These are thermal current ratings for the contact block — pick the voltage column that matches your control circuit voltage to confirm the contact can handle the load. Mechanical endurance is 5 million operating cycles; at AC the rated switching frequency is 10,000 operations per hour. For a high-cycle conveyor or packaging line, that headroom means the auxiliary contacts will outlast the main contactor's power contacts.
On a crowded DIN rail, those gaps are tight enough to fit next to a S00 contactor without leaving a full module width empty.