The A16-30-22-81: This is an ABB A16 series contactor with a 2NO-2NC auxiliary contact configuration, as described in the listing. The A16 frame is a compact IEC contactor class typically used for switching motor loads up to around 7.5 kW at 400 V AC-3 duty, though the exact rating for this variant should be verified from the nameplate or a full datasheet.
The 2NO-2NC auxiliary contact block is built into the contactor, so it occupies the same DIN-rail footprint as the base A16 frame. That matters for panel layout — you do not need a separate side-mount block, but you also cannot reconfigure the contact count without swapping the whole unit. The NO contacts handle the run signal to the motor starter coil; the NC pair typically feed back a status or fault signal to the PLC input card.
Deployment Context
Snap-on DIN rail mounting, standard for control panel integration. The A16 frame fits alongside other IEC contactors and overload relays on the same rail, with a 45 mm width per pole. Spring-cage or screw terminals accept up to 4 mm² conductors — match the lug size to the motor branch circuit.