The **D4C0112N-R60A** is a precision mechanical component, specifically a **Rotary Switch** manufactured by **Electroswitch**. It is part of their D4 Series, which is designed for high-reliability industrial and military-grade applications. --- ## 1. Technical Specifications The following table highlights the core electronic and mechanical parameters of the D4C0112N-R60A: | Parameter | Specification | | :--- | :--- | | **Switch Type** | Rotary | | **Number of Decks** | 1 | | **Number of Poles** | 1 | | **Number of Positions** | 12 | | **Current Rating** | 500mA (AC/DC) | | **Voltage Rating** | 115VAC / 28VDC | | **Contact Timing** | Non-Shorting (Break-Before-Make) | | **Termination Style** | PC Pin (Through-Hole) | | **Angle of Throw** | 30° | --- ## 2. Key Electronic Components & Features ### A. Contact Mechanism * **Non-Shorting (Break-Before-Make):** This electronic characteristic ensures that the connection to the previous circuit is fully broken before the connection to the next circuit is established. This prevents temporary short-circuiting of two active signals. * **Silver Contacts:** High-quality silver alloy is typically used to minimize contact resistance and ensure long-term electrical conductivity. ### B. Indexing and Rotation * **30-Degree Indexing:** The switch provides a tactile "click" every 30 degrees, allowing for exactly 12 positions in a full 360-degree circle. * **Mechanical Life:** These switches are rated for thousands of cycles, maintaining low contact resistance even after extensive use. ### C. Mounting and Form Factor * **PC Pin Termination:** Designed specifically for mounting directly onto a Printed Circuit Board (PCB). * **Compact Design:** The "D4" series is known for its space-saving circular footprint, making it ideal for control panels where horizontal space is limited. --- ## 3. Common Applications Due to its robust construction and precise signal switching, the D4C0112N-R60A is commonly used in: 1. **Test & Measurement Equipment:** Selecting between different voltage ranges or signal inputs. 2. **Audio Equipment:** Channel selection or gain stepping. 3. **Industrial Controls:** Mode selection for heavy machinery. 4. **Communication Systems:** Band switching and frequency selection. --- ## 4. Part Number Breakdown (D4 Series) ```text D4 - Series Identifier (Standard Rotary) C - Size/Mounting Style (Compact/PC Mount) 01 - Number of Poles per deck (1 Pole) 12 - Number of Positions (12 Positions) N - Contact Type (Non-Shorting) R60A - Specific mounting or shaft hardware configuration ```