The ABB AF16Z-30-01-23 is a 3-pole contactor with one normally closed auxiliary contact, rated for a 100-250VAC coil. It's a standard panel-mount power switching device — bolt it in for motor loads, resistive heaters, or lighting banks where the control voltage falls in that AC range.
Deployment context
The 1NC auxiliary gives you a feedback path for the PLC or a seal-in circuit without adding a separate block.