## KTN-R-10 Fuse Specifications and Characteristics The **KTN-R-10** is a specific type of industrial-grade electrical fuse belonging to the **Limitron™** series, manufactured primarily by **Eaton Bussmann**. It is designed for fast-acting protection in power distribution systems. ### 1. Technical Specifications The following table outlines the primary electrical ratings for the KTN-R-10: | Feature | Specification | | :--- | :--- | | **Current Rating** | 10 Amperes | | **Voltage Rating (AC)** | 250 Volts AC | | **Interrupting Rating** | 200,000 Amps (RMS Symmetrical) | | **Fuse Class** | Class RK1 | | **Response Speed** | Fast-Acting | | **Termination Style** | Ferrule (Cartridge) | --- ### 2. Key Physical Dimensions The KTN-R-10 follows standard Class R dimensions to ensure compatibility with specialized fuse holders. * **Length:** 2.0 inches (50.8 mm) * **Diameter:** 0.56 inches (14.3 mm) * **Body Material:** Melamine or Fiber tube with silver-plated brass end caps. --- ### 3. Functional Characteristics #### A. Fast-Acting Response Unlike time-delay fuses, the KTN-R-10 is designed to open almost instantly when it detects an overcurrent or short-circuit condition. This makes it ideal for protecting sensitive electronic components that cannot withstand prolonged surges. #### B. Current Limitation As a **Class RK1** fuse, it provides a high degree of current limitation. It restricts the amount of "let-through" energy during a fault, which prevents damage to downstream equipment and reduces the risk of arc flash. #### C. Rejection Feature The "R" in KTN-R signifies a **rejection** capability. These fuses have a specific physical notch in the end cap. When used with a Class R fuse block, it prevents the installation of lower-rated fuses (like Class H or K), ensuring the integrity of the safety design. --- ### 4. Typical Applications The KTN-R-10 is commonly found in the following environments: * **Branch Circuit Protection:** Guarding individual lines in a power distribution panel. * **Resistive Loads:** Used for heating elements or lighting circuits where inrush current is minimal. * **Control Transformers:** Protecting the primary or secondary sides of small industrial transformers. * **Panelboards:** General-purpose protection in industrial and commercial facilities.