Eaton NSB 10250T16112 Key Operated Selector Switch

The Eaton NSB 10250T16112 is a two-position, key-operated selector switch. This device operates with a keyed actuator that can lock the switch in one of two positions, providing a simple, two-state control point for electrical circuits. It is specified for NEMA-rated environments, with enclosure references including 3, 3R, and 4, indicating suitability for environments requiring protective enclosures for electrical components. Sold per unit (EA), the 10250T16112 part number identifies this specific selector switch configuration within Eaton’s NSB lineup. In practice, two-position selectors provide a straightforward method to select between two circuit states or modes in a control panel. Keyed operation implies a mechanism requiring a key to switch states. Supported by its two-position arrangement, the switch provides a simple means to indicate two distinct conditions in a control scheme. This combination of features—two positions and keyed operation—reflects a fundamental approach in basic control panel hardware.