10250-R20CFB
AI

The **10250-R20CFB** is a specific model of an industrial-grade **30.5 mm Push Button Assembly** from the **Eaton (Cutler-Hammer)** 10250T series. These components are designed for heavy-duty applications requiring high durability and reliability.
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### ## Component Specifications
Below are the technical details and physical characteristics of the 10250-R20CFB:
| Feature | Specification |
| :--- | :--- |
| **Manufacturer** | Eaton (formerly Cutler-Hammer) |
| **Series** | 10250T Heavy-Duty |
| **Type** | Non-Illuminated Push Button |
| **Actuator Type** | Flush (Flat) |
| **Color** | Black |
| **Mounting Size** | 30.5 mm (Standard Industrial Hole) |
| **Contact Configuration** | 2 NO (Normally Open) |
| **Material** | Zinc Die-Cast (Chrome Plated Bezel) |
| **Ingress Protection** | NEMA 3, 3R, 4, 4X, 12, 13 (Oil/Water Tight) |
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### ### Key Electronic & Mechanical Parts
The assembly is modular and consists of three primary sections:
#### 1. The Operator (Actuator)
The visible part on the outside of the control panel.
* **Construction:** Heavy-duty die-cast metal housing with a chrome-plated bezel.
* **Action:** Momentary (the button springs back after being pressed).
* **Environment:** Includes a drainage system to prevent liquids from entering the contact area.
#### 2. The Contact Blocks
These are the electronic components that switch the circuit.
* **Configuration:** This model specifically includes two **Normally Open (NO)** contact blocks.
* **Ratings:** Typically rated for **10 Amps** continuous thermal current and up to 600V AC/DC.
* **Reliability:** Features "nib" or "pointed" contacts that bite through surface oxidation to ensure a clean electrical connection in dusty environments.
#### 3. Mounting Hardware
* **Locking Nut:** A heavy-duty nut that secures the button to the panel.
* **Gasket:** A neoprene gasket ensures a water-tight and oil-tight seal against the enclosure.
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### ### Typical Applications
Due to its rugged construction, the 10250-R20CFB is commonly used in:
* CNC Machine control panels.
* Manufacturing assembly lines.
* Outdoor industrial equipment.
* Environments exposed to cutting oils, water spray, or heavy dust.
- ⤷
What is the difference between NEMA 4 and NEMA 4X ratings for this button?
- ⤷ Can the contact blocks be swapped for NC (Normally Closed) types?
- ⤷ How do you wire the 2 NO contacts in a typical motor starter circuit?