The **WRPPB-NJK5R-R** is a specific part number typically associated with **M12 Circular Connectors**, specifically those used in industrial automation, sensor technology, and fieldbus systems. This part number generally refers to a **Right-Angle (90°), Female, 5-Pole, M-coded or A-coded connector with a plastic body and a specific cable or mounting configuration.** --- ### 1. Part Number Breakdown (Typical Industry Coding) While part numbering schemes can vary slightly between manufacturers (such as Phoenix Contact, Binder, or TE Connectivity), the code usually breaks down as follows: | Segment | Feature | Explanation | | :--- | :--- | :--- | | **WRP** | **Form Factor** | Often denotes "Wire/Wall Receptacle" or "Right-angle Plug". | | **PB** | **Material/Type** | Plastic Body or PBT (Polybutylene Terephthalate) housing. | | **NJK** | **Internal Specs** | Nickel-plated brass contacts/nut or specific insulation keys. | | **5** | **Pin Count** | 5-Pin/5-Pole configuration. | | **R** | **Orientation** | Right-Angle (90 degrees). | | **-R** | **Compliance** | Often indicates RoHS (Restriction of Hazardous Substances) compliance. | --- ### 2. Technical Specifications | Parameter | Standard Value | | :--- | :--- | | **Interface Type** | M12 (12mm thread) | | **Gender** | Female (Socket) | | **Orientation** | 90° Right Angle | | **Number of Poles** | 5 Pins | | **Current Rating** | 4A per contact (typical) | | **Voltage Rating** | 60V AC / 60V DC | | **IP Rating** | IP67 or IP68 (Dust tight, waterproof) | | **Contact Material** | Gold-plated copper alloy / Nickel base | --- ### 3. Key Electronic Components Inside this connector assembly, several critical electronic parts ensure signal integrity: 1. **Contacts (Pins/Sockets):** Usually made of a copper alloy with gold plating to prevent oxidation and ensure low contact resistance over time. 2. **Insulator Body:** The plastic "insert" that holds the pins. It is made from high-dielectric materials to prevent arcing between pins. 3. **Coupling Nut:** A threaded metal (nickel-plated brass) or plastic ring that provides the mechanical tension to seal the connection. 4. **O-Ring/Gasket:** A rubber seal (NBR or Viton) that provides the IP67/68 rating, protecting the electronics from moisture and oil. 5. **Shielding (Optional):** If the part is "Shielded," it will contain a 360° metal foil or braid connected to the housing to prevent EMI (Electromagnetic Interference). --- ### 4. Common Applications * **Industrial Sensors:** Connecting proximity switches, photoeyes, and pressure sensors. * **Actuators:** Powering small solenoid valves or motor drivers. * **Fieldbus Systems:** Used in CANopen, DeviceNet, or Profibus networks (depending on the "coding" or keyway). * **Robotics:** The right-angle design is used where space is tight and straight cables would be bent or damaged.