Allen-Bradley X1000-NX163 Size 1 Reversing Starter

The Allen-Bradley X1000-NX163 Size 1 Reversing Starter is a panel-mounted, 3-pole motor starter designed to safely reverse a three-phase motor’s direction using interlocked contactors. It uses a 120 VAC control coil and supports forward/reverse operation with a NEMA Size 1 current rating (approximately 27 A) and a voltage rating up to 600 VAC. The contact arrangement is 3-pole power contacts with mechanical interlock, and an external overload relay is required separately to provide motor protection; mounting options include panel-mounted enclosed or open starter assemblies. Common replacements include Allen-Bradley 509/505 Series NEMA Size 1 reversing starters, Siemens 3RT + interlock reversing starters (Size 1), and Eaton Cutler-Hammer C25D reversing motor starters.