Image is Representational - See Manufacturer Specs | Hybrid motor starter for reversing 3~ AC motors up to 500 V AC and 9 A output current - with 24 V DC control voltage - adjustable overload shutdown - emergency stop function to SIL 3/PL e - and screw connection. The 2900421 is hybrid motor starter for reversing 3~ AC motors up to 500 V AC and 9 A output current with 24 V DC control voltage adjustable overload shutdown emergency stop function to SIL 3/PL e and screw connection.