The **D4G0106S-R30C** is a high-performance rotary switch manufactured by Electroswitch (specifically under the Centralab/OakGrigsby legacy). It is part of the **D4 Series**, known for its rugged construction and reliability in military and industrial applications. --- ### 1. Key Technical Specifications | Parameter | Specification | |:---|:---| | **Switch Type** | Rotary Switch | | **Circuit Configuration** | SP6T (1 Pole, 6 Positions) | | **Number of Sections** | 1 Deck (Wafer) | | **Current Rating** | 1.5A @ 28VDC / 0.5A @ 115VAC | | **Termination Style** | Solder Lug | | **Index Angle** | 30° Throw | | **Actuator Type** | Round Shaft (Standard) | | **Contact Material** | Silver Alloy | --- ### 2. Physical Construction The D4 series utilizes a **wafer-style** construction. The specific components of this part number include: * **D4 Series Base:** A standard open-frame ceramic or phenolic construction designed for durability. * **G-Type Frame:** This refers to the specific frame size and mounting style (usually a 1" diameter format). * **0106 Section:** This identifies the switch as having **1 Pole** and **6 active positions**. * **S (Shorting/Non-Shorting):** The "S" typically denotes **Shorting (Make-before-break)**. This means as you turn the knob, the switch momentarily connects the new position before disconnecting the old one, preventing "pops" or signal gaps. * **R30C:** This indicates the **30-degree indexing** (spacing between clicks) and the specific shaft/bushing configuration. --- ### 3. Application Use Cases Due to its robust silver alloy contacts and high-quality build, this switch is commonly found in: 1. **Audio Equipment:** Used for input selection or gain stepping where signal integrity is critical. 2. **Test Instrumentation:** Voltage or range selectors in multimeters and oscilloscopes. 3. **Military Communications:** Ruggedized radio equipment requiring precise mechanical feedback. 4. **Industrial Controls:** Heavy-duty machinery mode selection. --- ### 4. Circuit Example (SP6T) In a basic setup, the switch acts as a router for a single signal source to one of six outputs: ```markdown [Common Input] ---+--- (Pos 1) Out A |--- (Pos 2) Out B |--- (Pos 3) Out C |--- (Pos 4) Out D |--- (Pos 5) Out E `--- (Pos 6) Out F ``` ---