The ABB 2TLA020052R1000 VITAL 1 is a safety relay that accepts inputs from a light beam/curtain or a safety switch/interlock, and switches two safety contacts at 24V dc. It's the kind of module you'd wire between a guarding device and the machine's safety circuit — the light curtain or gate switch lands on the input, the relay's NO contacts drop into the safety chain that kills power or triggers a safe stop.
Deployment context
The 24V dc coil is standard for safety circuits fed from a PELV supply. Two safety contacts are enough for a single-zone guarding application — e.g., one pair goes to the safety PLC input, the other to the main contactor coil circuit. No auxiliary contacts on this variant; if you need feedback to a controller, plan a separate monitoring relay or use the safety PLC's own input.