The **FRS-R-16/10** is a specialized industrial fuse manufactured by Eaton (Bussmann Series). It is a part of the Fusetron™ family, known for its dual-element, time-delay capabilities. ### 1. Technical Specifications Below are the core technical parameters for the FRS-R-16/10 fuse: | Feature | Specification | | :--- | :--- | | **Product Series** | Fusetron™ FRS-R | | **Amperage Rating** | 1.6 Amps (16/10 A) | | **Voltage Rating (AC)** | 600 Vac | | **Voltage Rating (DC)** | 300 Vdc | | **Interrupting Rating** | 200,000A RMS Symmetrical (AC) / 20,000A (DC) | | **Fuse Class** | Class RK5 | | **Body Material** | Fiberglass Tube | --- ### 2. Key Features and Characteristics #### A. Dual-Element Design Unlike standard fast-acting fuses, the FRS-R-16/10 contains two distinct elements: 1. **Thermal Element:** Handles low-level overloads. It provides a "time-delay," allowing temporary surge currents (like motor startups) to pass without blowing the fuse. 2. **Magnetic Element:** Provides high-speed response to short circuits or heavy ground faults. #### B. Current Limitation As a **Class RK5** fuse, it is highly current-limiting. In the event of a major short circuit, the fuse reacts fast enough to prevent the peak current from reaching its maximum potential, protecting sensitive downstream components from electromagnetic and thermal stress. #### C. Rejection Feature The "R" in FRS-R stands for **Rejection**. The fuse has a specific physical groove in the mounting cap. When used with a Class R fuse block, it prevents the installation of non-rejection fuses (like Class H or K) that have lower interrupting ratings, ensuring the safety integrity of the system. --- ### 3. Common Applications Due to its low amperage (1.6A) and high voltage rating, it is typically used in the following scenarios: * **Motor Protection:** Small industrial motors where high inrush current occurs at startup. * **Transformer Protection:** Primary or secondary side protection for control power transformers. * **Solenoids and Relays:** Protecting inductive loads that experience momentary spikes. * **General Industrial Circuits:** Used in 480V or 600V power distribution panels. --- ### 4. Comparison: FRS-R vs. FRN-R It is important not to confuse the FRS-R with the FRN-R series: * **FRS-R:** Rated for **600 Vac**. * **FRN-R:** Rated for **250 Vac**. * *Note: An FRS-R can replace an FRN-R (higher voltage rating), but an FRN-R cannot replace an FRS-R.*