### KTS-R-3 Fuse Specifications and Technical Overview The **KTS-R-3** is a high-performance industrial fuse manufactured by **Bussmann (Eaton)**. It belongs to the **Limitron™** series and is categorized as a **Class RK1** fuse. These fuses are designed for high-speed response to short circuits and provide excellent current limitation. --- ### 1. Key Technical Specifications The table below outlines the primary electrical characteristics of the KTS-R-3: | Feature | Specification | | :--- | :--- | | **Part Number** | KTS-R-3 | | **Amperage Rating** | 3 Amps | | **Voltage Rating (AC)** | 600 Vac | | **Interrupting Rating** | 200,000 Amps (RMS Symmetrical) | | **Fuse Class** | Class RK1 | | **Response Characteristic** | Fast-Acting | | **Body Material** | Melamine (Fiberglass) tube with plated end caps | --- ### 2. Physical Dimensions The KTS-R-3 follows the standard physical sizing for 600V, 0-30A Class R fuses to ensure compatibility with standard fuse blocks and disconnect switches. * **Length:** 5.0 inches (127 mm) * **Diameter:** 0.81 inches (20.6 mm) --- ### 3. Electronic Features & Benefits * **Current Limitation:** As a Class RK1 fuse, the KTS-R-3 is significantly more current-limiting than standard Class RK5 fuses. This helps protect sensitive downstream components by stopping a fault before it reaches its peak magnitude. * **Rejection Feature:** The "R" in KTS-R indicates a rejection notch in the blade/end cap. This prevents the installation of lower-rated fuses (like Class H or K) into a Class R fuse holder, ensuring the safety integrity of the circuit. * **High Interrupting Rating:** With a 200kA rating, it can safely clear high-energy faults common in industrial power distribution systems. * **Fast-Acting Response:** Unlike "Time-Delay" fuses, the KTS-R-3 reacts almost instantaneously to overloads. This makes it ideal for resistive loads or circuits without high inrush currents. --- ### 4. Typical Applications The KTS-R-3 is commonly used in the following environments: 1. **Branch Circuit Protection:** Providing localized protection for individual circuits. 2. **Control Transformers:** Protecting the primary side of small transformers. 3. **Lighting Circuits:** Used in non-inductive lighting loads where fast clearing is required. 4. **Panelboards:** General-purpose protection in industrial power panels.