The Siemens 3RA1811-8XA04-2AF0-ZX95 is a SIGUARD safety combination, a pre-assembled unit combining a safety contactor and monitoring logic in one package for DC 110 V control circuits. The multi-pack quantity of 64 pieces means you're buying a production lot, not a single unit; plan your BOM line accordingly.
The DC 110 V coil voltage is common in industrial safety circuits where a separate 110 VDC supply powers the safety chain. The cage-clamp wiring method is faster than screw terminals for panel builders, but verify the clamping range against your wire gauge.