The **KTK-R-2/10** is a specific model of high-performance industrial fuse. It belongs to the **Limitron™** series manufactured by Bussmann (a division of Eaton). Below is the detailed breakdown of its electronic specifications and characteristics. ### 1. Technical Specifications The "2/10" in the part number indicates the amperage rating, which is 0.2 Amps. | Feature | Specification | | :--- | :--- | | **Part Number** | KTK-R-2/10 | | **Amperage Rating** | 0.2A (2/10 Amp) | | **Voltage Rating (AC)** | 600 Vac | | **Interrupting Rating** | 200,000 Amps RMS Symmetrical | | **Fuse Class** | Class CC | | **Response Time** | Fast-Acting | | **Material** | Melamine tube with Nickel-plated bronze endcaps | --- ### 2. Key Component Characteristics #### Class CC Rejection Feature The "R" in the prefix stands for **Rejection**. Class CC fuses have a unique physical rejection tip on one end. This ensures that: * It can only be inserted into a Class CC fuse holder. * Lower-rated fuses (like standard midget fuses) cannot be accidentally installed in a circuit requiring the high interrupting capacity of a Class CC fuse. #### High Interrupting Rating Despite its small size, it can safely clear a fault current of up to **200,000 Amps**. This makes it ideal for protecting branch circuits where high short-circuit currents might occur. #### Fast-Acting Design As a fast-acting fuse, it has no time-delay. It is designed to open very quickly when it detects an overload or short circuit. This is critical for protecting sensitive electronic components that cannot withstand prolonged overcurrent. --- ### 3. Common Applications Due to its voltage rating and fast-acting nature, the KTK-R-2/10 is typically found in: * **Control Transformer Protection:** Protecting the primary side of industrial control transformers. * **Lighting Circuitry:** Used in specialized lighting ballasts. * **General Purpose Circuits:** Any 600V or lower circuit requiring small-footprint, high-capacity protection. * **Industrial Control Panels (UL 508):** Meeting the requirements for branch circuit protection. --- ### 4. Physical Dimensions The KTK-R series follows the standard Midget/Class CC form factor: * **Diameter:** 13/32 inch (10.3 mm) * **Length:** 1-1/2 inches (38.1 mm)