Based on the part number **166329**, the most common identification in the electronics and industrial control industry refers to a **Solenoid Valve Connector** (often manufactured by **Festo**). Below is a detailed breakdown of the technical specifications and components associated with this part. --- ## 1. Component Overview The 166329 (specifically the **KMEB-1-24-2,5-LED**) is a pre-assembled connecting cable designed primarily for solenoid valves. It acts as the electrical interface between the controller (PLC) and the pneumatic actuator. ### Technical Specifications Table | Feature | Specification | | :--- | :--- | | **Product Type** | Socket with cable (Solenoid Valve Connector) | | **Mounting Type** | On solenoid valve via central screw | | **Operating Voltage** | 24V DC | | **Nominal Current** | 1.0 A | | **Cable Length** | 2.5 Meters | | **Degree of Protection** | IP65 (Dust-tight and water-jet resistant) | | **Status Display** | Yellow LED (Integrated) | --- ## 2. Key Electronic Features ### A. Integrated LED Indicator The part features a built-in **Yellow LED**. This serves as a diagnostic tool: * **On:** Indicates that the solenoid is receiving power and is energized. * **Off:** Indicates no power is reaching the valve, assisting in rapid troubleshooting of wiring or PLC output issues. ### B. Protective Circuitry The 166329 typically includes an **internal Varistor** or diode. This circuit is crucial for: * **Surge Suppression:** It absorbs high-voltage spikes created when the magnetic coil in the solenoid is switched off (Back EMF). * **PLC Protection:** It prevents these spikes from traveling back through the cable and damaging sensitive PLC output cards. --- ## 3. Physical Construction * **Housing:** Usually made of Polyamide (PA) for impact resistance. * **Contacts:** Bronze or Brass with silver/tin plating to ensure high conductivity and corrosion resistance. * **Cable Jacket:** PVC or PUR, designed to withstand industrial environments involving oil and vibration. --- ## 4. Pin Configuration (Internal) While the cable comes pre-wired, the internal structure typically follows the **DIN EN 175301-803** standard (formerly DIN 43650), Type C. ```text Pin 1: Positive (+) 24V DC Pin 2: Negative (-) 0V PE: Earth Ground (Protective Earth) ``` ---