The **D4C0106N-R30A** is a specific model of a **Rotary Switch** manufactured by Electroswitch. This component is part of their heavy-duty D4 series, designed for industrial and military-grade applications where reliability and high contact ratings are required. --- ### 1. Technical Specifications The part number follows a specific nomenclature that defines its electrical and physical properties. | Specification | Details | | :--- | :--- | | **Component Type** | Rotary Switch | | **Number of Poles** | 1 Pole | | **Number of Positions** | 6 Positions | | **Circuitry** | Single Pole, Six Throw (SP6T) | | **Contact Rating** | 0.5A @ 125VAC | | **Switching Type** | Non-Shorting (Break-before-Make) | | **Mounting Type** | Panel Mount | | **Termination Style** | Solder Lug | --- ### 2. Key Features * **Rugged Construction:** Designed to meet or exceed MIL-S-3786 standards, making it resistant to vibration, shock, and environmental extremes. * **Non-Shorting Contacts:** Also known as "Break-before-make," this ensures that the previous circuit is fully disconnected before the next circuit is engaged. * **Indexing:** Features a 30-degree indexing (detent) angle between positions, providing tactile feedback to the user. * **Materials:** Typically features silver-plated brass or solid silver contacts for low contact resistance and long life cycles. --- ### 3. Terminal Mapping (Internal Circuit) Because this is a **1 Pole, 6 Position** switch, the internal wiring logic is straightforward: ```text [Common Terminal] | ________|________ | | | | | | | (1)(2)(3)(4)(5)(6) <-- Output Positions ``` --- ### 4. Common Applications Due to its high build quality, the D4C0106N-R30A is found in: 1. **Industrial Controls:** Selecting between different operating modes (Manual/Auto/Test). 2. **Test Equipment:** Switching between different measurement ranges or input channels. 3. **Communication Gear:** Frequency band selection in radio equipment. 4. **Audio Equipment:** Selecting input sources in high-fidelity amplifiers. ---