The ABB A16-40-00-83 is a 4-pole contactor from the A16 series, with a 48/50 V coil. The lifecycle stage is eol_hot, meaning ABB has ended production.
The A16-40-00-83 is a 4-pole contactor, meaning it switches four power circuits simultaneously. The 48/50 V coil voltage matches control systems running on nominal 48 VDC or 50 VAC — common in older European panel designs and some railway auxiliary supplies. The A16 series is a compact, rail-mounted contactor family ABB used for motor starting and resistive load switching in control cabinets.