Based on your inquiry, the **KSBS-AC-R** refers to a specific series of **Standard Duty Key Switches** often used in industrial controls, security systems, and high-end consumer electronics. These components are designed to restrict system access to authorized personnel holding a physical key. --- ### 1. General Specifications The KSBS-AC-R is typically characterized by its mechanical locking mechanism integrated with an electrical switch. Below are the standard electronic and physical parameters: | Parameter | Specification | | :--- | :--- | | **Switch Type** | Keylock Switch (Rotary) | | **Contact Configuration** | SPST (Single Pole Single Throw) or SPDT | | **Current Rating** | 2A to 4A (typical for AC loads) | | **Voltage Rating** | 125V AC / 250V AC | | **Terminal Type** | Solder Lug or Screw Terminals | | **Mounting Type** | Panel Mount | | **Key Removal** | Usually removable in "Off" or "Both" positions | --- ### 2. Key Electronic Components & Materials The internal construction of the KSBS-AC-R involves several critical electronic and mechanical parts: * **Contact Blocks:** These are the internal conductive elements that open or close the circuit. They are usually made of silver-plated brass or copper to ensure high conductivity and resistance to oxidation. * **Insulation Housing:** The body is typically constructed from high-dielectric strength plastics (like Nylon 66 or PBT) to prevent electrical arcing and ensure user safety. * **Tumbler Mechanism:** While mechanical, this part dictates the electronic state. It consists of brass pins and springs that must align correctly for the switch to rotate. * **Return Springs:** In "Momentary" versions (if applicable), these return the electronic contacts to their default state once the key is released. --- ### 3. Wiring Configuration Depending on the specific sub-model, the wiring logic usually follows this pattern: ```text Terminal A (Common) ----[Key Switch]---- Terminal B (Normally Open) ``` 1. **OFF Position:** The internal circuit is broken (Open Circuit). No current flows to the load. 2. **ON Position:** The key rotation forces the internal contact bridge to connect the terminals (Closed Circuit), powering the device. --- ### 4. Common Applications * **Security Alarms:** Enabling/disabling zones. * **Industrial Machinery:** Emergency bypass or supervisor-only operation modes. * **Elevator Controls:** Restricting floor access or switching to "Fireman Service." * **Medical Equipment:** Preventing unauthorized use of sensitive diagnostic tools.