The part number **1663404** is most commonly associated with specialized sensors used in industrial automation and heavy machinery, specifically within the **Phoenix Contact** ecosystem or **Caterpillar (CAT)** heavy equipment parts. Below is a breakdown of the technical specifications and characteristics typically associated with this part number. --- ## 1. Primary Identification In the electronics and industrial sector, this part number usually refers to a **Proximity Sensor** or a **Circular Connector Assembly**. | Attribute | Specification | | :--- | :--- | | **Component Type** | Inductive Proximity Sensor / Sensor Cable | | **Common Brands** | Phoenix Contact, Caterpillar, TE Connectivity | | **Connection Type** | M12 Circular Connector (usually) | | **Material** | Nickel-plated brass or stainless steel | --- ## 2. Technical Characteristics If referring to the **Phoenix Contact 1663404** (often labeled as **CK1,6-ED-1,50ST AU**), it is a high-quality turned crimp contact. ### Key Features: * **Contact Type:** Male Crimp Contact. * **Plating:** Gold-plated (AU) for superior conductivity and corrosion resistance. * **Wire Gauge:** Typically supports $1.5 \text{ mm}^2$ (approx. 16 AWG). * **Application:** Used in heavy-duty connectors (HEAVYCON series) for industrial control signals. --- ## 3. Industrial Applications These electronic parts are designed for "harsh environment" deployment. 1. **Industrial Automation:** Used in PLC (Programmable Logic Controller) wiring and sensor manifolds. 2. **Heavy Machinery:** Frequently found in Caterpillar engines and hydraulic systems for position sensing or signal transmission. 3. **Robotics:** Employed in articulated joints where high-cycle durability is required for electrical connections. --- ## 4. Maintenance and Handling When dealing with these parts, specific electronic standards should be followed: ```bash # Proper Handling Procedures 1. Use a dedicated crimping tool (e.g., CK1,6-ED) to ensure gas-tight connections. 2. Inspect gold plating for scratches which can lead to oxidation. 3. Ensure the extraction tool is used during disassembly to prevent housing damage. ``` ---