The **D413-R1LA** is a specific model number typically associated with **pressure switches** or **microswitches**, most notably manufactured by brands like **Cherry** (now ZF) or specialized industrial sensor companies. Below is a breakdown of its electronic characteristics and technical components. --- ### 1. Technical Specifications Table | Feature | Description | | :--- | :--- | | **Component Type** | Snap-Action Microswitch / Pressure Switch | | **Contact Configuration** | SPDT (Single Pole Double Throw) | | **Current Rating** | Typically 0.1A to 15A (Depending on voltage) | | **Voltage Rating** | 125V / 250V AC | | **Terminal Type** | Solder or Quick Connect (R1LA variant often denotes specific terminal orientation) | | **Actuator Type** | Lever / Roller Lever (indicated by the "L" in R1LA) | --- ### 2. Electronic Internal Structure The electronic functionality of the D413-R1LA relies on three primary internal terminals: 1. **COM (Common):** The input terminal where the current enters. 2. **NC (Normally Closed):** The circuit is complete when the switch is in its resting state. 3. **NO (Normally Open):** The circuit is completed only when the lever/actuator is pressed. ### 3. Key Electronic Characteristics * **Snap-Action Mechanism:** The switch uses a spring-loaded mechanism that "snaps" the contacts from one position to another at a specific trip point. This minimizes arcing and ensures a clean electronic signal. * **Contact Resistance:** Designed with low initial contact resistance (typically <100mΩ) to ensure signal integrity in control circuits. * **Insulation Resistance:** High insulation (often >100MΩ at 500VDC) to prevent leakage current between the housing and the live terminals. * **Differential Travel:** The electronic state resets only after the lever moves back past a certain point, preventing "fluttering" or rapid oscillation of the signal. ### 4. Common Applications Due to its precise electronic switching, the D413-R1LA is commonly found in: * **Industrial Automation:** Used as a limit switch to detect the position of machine parts. * **HVAC Systems:** Used as a pressure sensor switch to ensure fans or pumps are operating correctly. * **Safety Interlocks:** Ensuring a panel or door is closed before allowing a high-voltage circuit to energize. ---