What it is and what it does
The 2TLA042022R3410 MAGNE 4 DYN-2 M12-8: The ABB 2TLA042022R3410 is a Magne 4 DYN safety interlock switch with an aluminium housing and an M12 connector. It's a non-contact, magnetically actuated guard switch — the kind you bolt to a sliding or hinged guard door, with the actuator mounted on the moving part. No mechanical linkage to wear out, so it holds up on high-cycle lines where a roller-plunger switch would be a PM item.
Where it goes in a machine
This switch is part of a safety circuit — typically wired into a safety relay or a safety-rated PLC input. The M12 connector keeps the wiring clean and quick; no need to open the switch body to land conductors. The aluminium housing stands up to washdown environments better than a plastic-bodied interlock, so it's a natural fit on food-and-bev packaging lines or machine tools that see coolant spray.