The **D4D0106S-R60A** is a specific model of a **Rotary Switch** manufactured by **Electroswitch** (frequently under the Centralab brand lineage). It is designed for high-reliability industrial and commercial applications where multi-position switching is required. --- ### 1. Technical Specifications The part number follows a specific nomenclature that defines its electrical and physical characteristics: | Parameter | Specification | | :--- | :--- | | **Component Type** | Rotary Switch | | **Number of Poles** | 1 Pole | | **Number of Positions** | 6 Positions | | **Contact Timing** | Shorting (Make-before-break) | | **Angle of Throw** | 30 Degrees | | **Voltage Rating** | 115 VAC / 28 VDC | | **Current Rating** | 1.5 Amps (at 115 VAC) | | **Mounting Type** | Panel Mount | --- ### 2. Key Electronic Features #### A. Contact Timing (Shorting) The "S" in the part number usually denotes **Shorting** contacts. - **Mechanism:** As you turn the knob, the switch momentarily connects the new position before disconnecting from the old one. - **Use Case:** This is critical in audio or sensitive signal applications to prevent "pops," electrical noise, or open-circuit spikes during switching. #### B. Indexing & Mechanical Life - **Index:** It features a dual-ball side-thrust index mechanism, providing a crisp, tactile "click" and ensuring the switch stays locked in the selected position. - **Durability:** These switches are rated for thousands of cycles, typically featuring glass-alkyd or ceramic insulation for high dielectric strength. #### C. Materials and Construction - **Contacts:** Usually silver-plated brass or silver alloy, which ensures low contact resistance. - **Insulation:** High-grade diallyl phthalate or ceramic, providing excellent resistance to heat and moisture. --- ### 3. Common Applications Due to its robust build, the D4D0106S-R60A is found in: 1. **Test Equipment:** Selecting between different measurement ranges (Volts, Amps, Ohms). 2. **Audio Equipment:** Input selectors or gain stage switching. 3. **Industrial Controls:** Mode selection for heavy machinery. 4. **Communications:** Frequency or channel selection in radio hardware. --- ### 4. Circuit Diagram Representation In an electrical schematic, this part is represented as a single common terminal (Pole) that can be swept across six output terminals (Positions). ```text (Common) | ______|______ | | | | | | 1 2 3 4 5 6 (Output Positions) ```