## FPK-R-10A: Electronic Specifications and Overview The **FPK-R-10A** is a specialized power fuse, typically categorized as a Class CC, fast-acting (non-time delay) fuse. These components are designed to protect sensitive electronic circuits and industrial equipment from overcurrent conditions. ### 1. General Specifications The following table outlines the primary electrical characteristics of the FPK-R-10A: | Feature | Specification | | :--- | :--- | | **Current Rating** | 10 Amperes | | **Voltage Rating (AC)** | 600V AC | | **Voltage Rating (DC)** | 300V DC (varies by manufacturer) | | **Interrupting Rating** | 200,000A RMS Symmetrical | | **Fuse Class** | Class CC | | **Response Characteristic** | Fast-Acting / Non-Time Delay | | **Body Material** | Melamine or Ceramic | --- ### 2. Physical Dimensions Class CC fuses like the FPK-R-10A have a standardized physical footprint to ensure rejection-type safety (preventing the installation of lower-rated fuses in high-rated holders). * **Diameter:** 13/32 inch (approx. 10.3 mm) * **Length:** 1-1/2 inches (approx. 38.1 mm) * **Termination:** Ferrule with a rejection tip (a small notch at one end). --- ### 3. Key Electronic Functions The FPK-R-10A serves three critical roles in an electronic assembly: * **Short-Circuit Protection:** Due to its high interrupting rating (200kA), it can safely clear high-energy faults without exploding or causing fire. * **Current Limiting:** It is a "Current Limiting" fuse, meaning it reacts so quickly that it stops the peak current from reaching its full potential during a short circuit. * **Rejection Feature:** The physical design ensures that it cannot be replaced by a general-purpose Midget fuse, which might have a lower interrupting capacity. --- ### 4. Common Applications This specific fuse is most commonly found in: 1. **Control Transformers:** Protecting the primary side of the circuit. 2. **Lighting Balasts:** Shielding sensitive electronics from surges. 3. **Industrial Control Panels:** Protecting PLC (Programmable Logic Controller) inputs and outputs. 4. **Solenoids:** Quick disconnect in case of a coil failure. --- ### 5. Identification Code Breakdown The part number can generally be decoded as follows: * **FPK:** Product Series (Fast-acting Power). * **R:** Rejection-type feature (Class CC). * **10A:** 10 Ampere current capacity.