The **10250-R21CS** is a specific part number within the Eaton (Cutler-Hammer) 10250T series. This series is known for its heavy-duty, oil-tight, and water-tight industrial control units. ### 1. Component Overview The **10250-R21CS** is a complete 30.5mm pushbutton operator assembly. It is primarily used in industrial control panels to manually interrupt or initiate electrical circuits. | Feature | Specification | | :--- | :--- | | **Manufacturer** | Eaton (Cutler-Hammer) | | **Series** | 10250T | | **Type** | Non-Illuminated Pushbutton | | **Operator Action** | Momentary (Spring Return) | | **Actuator Type** | Extended Button | | **Color** | Red | | **Mounting Size** | 30.5 mm | --- ### 2. Breakdown of the Part Number Industrial parts often use a "smart" numbering system. Here is how the 10250-R21CS code is structured: * **10250T**: The base series for heavy-duty 30.5mm devices. * **R**: Typically denotes the color (Red) or a specific operator type. * **21**: Refers to the physical configuration (Extended head, momentary action). * **CS**: Often indicates a specific "Contact Block" configuration (Customized or Standard). In many Eaton configurations, this represents a pre-assembled unit with **1 NO (Normally Open) and 1 NC (Normally Closed)** contact block. --- ### 3. Electrical & Mechanical Properties These parts are designed for harsh environments (factories, chemical plants, etc.). * **Contact Rating:** Usually rated for heavy-duty AC/DC (A600/P600 rating). * **Material:** The housing is typically die-cast zinc, and the button is made of high-impact plastic. * **Environmental Protection:** Rated NEMA 3, 3R, 4, 4X, 12, and 13 (Oil-tight and Water-tight). * **Terminal Type:** Screw terminals with pressure plates for secure wiring. --- ### 4. Common Applications * **Emergency Stops:** Due to the red color (though "E-Stops" are usually mushroom-shaped, extended red buttons are used for standard "Stop" functions). * **Manual Override:** Used in motor control centers to stop machinery. * **Logic Input:** Provides a physical signal to a PLC (Programmable Logic Controller).