S811+N37N3S Eaton Soft Starter

The Eaton S811+N37N3S is a compact, severe-duty soft starter intended for reliable control of three-phase motors using an inside-the-delta (3-lead) configuration. It is rated at 37 A and has a 65 mm frame size (Frame N), defining its current capacity and housing size for application and fitment planning. A built-in overload and run bypass contactor assists with installation and setup. Advanced motor protection is included for demanding motor-control uses, including pumping systems, and the unit provides smooth starting and stopping control. Its compact footprint accommodates retrofits into existing motor control centers or enclosures without structural modifications.