The **WAC-A1AB-R** is a specific electronic component, typically identified as a **Micro-Switch** or **Snap Action Switch**, often utilized in industrial controls, automotive mechanisms, and high-precision limit sensing applications. Below is a breakdown of its electronic characteristics and technical specifications. --- ## 1. Technical Specifications The WAC-A1AB-R is designed for high reliability and rapid switching. Its internal "snap action" mechanism ensures that the physical movement of the actuator results in an instantaneous transition of the electrical contacts. | Feature | Description | | :--- | :--- | | **Switch Type** | Micro-Switch / Snap Action | | **Circuitry** | SPDT (Single Pole Double Throw) | | **Contact Material** | Silver Alloy (typically) for high conductivity | | **Termination Style** | Solder Terminals / Quick Connect | | **Actuator Type** | Pin Plunger or Lever (depending on sub-configuration) | | **Operating Force** | Precision calibrated (ranges from 50g to 200g) | --- ## 2. Key Electronic Parts & Construction The internal architecture of the WAC-A1AB-R consists of several critical layers: ### A. Contact Mechanism * **Stationary Contacts:** Fixed points representing the "Normally Open" (NO) and "Normally Closed" (NC) positions. * **Movable Contact:** A spring-loaded arm that "snaps" between the stationary contacts once the operating point is reached. ### B. The Spring System * Uses a **Beryllium Copper** or high-grade steel leaf spring. This stores mechanical energy until the trip point is reached, ensuring the contacts move at a constant speed regardless of how slowly the external actuator is pressed. ### C. Housing (Casing) * **Material:** Usually molded from **PBT (Polybutylene Terephthalate)** or Phenolic resin. These materials provide high dielectric strength (insulation) and thermal resistance. --- ## 3. Electrical Ratings While specific ratings can vary slightly by manufacturer batch, the standard parameters for this series are: * **Voltage Rating:** Up to 250V AC. * **Current Rating:** Typically 5A to 10A (Resistive load). * **Insulation Resistance:** 100 MΩ min. (at 500V DC). * **Dielectric Strength:** 1,000V AC for 1 minute between non-consecutive terminals. --- ## 4. Application Logic Because the WAC-A1AB-R is an **SPDT** switch, it can be wired in two primary ways: 1. **Normally Closed (NC):** The circuit is complete until the switch is pressed (e.g., a fridge door light). 2. **Normally Open (NO):** The circuit is incomplete until the switch is pressed (e.g., a doorbell or computer mouse button).