The **3AB200-R** is a specific model of a **Fast-Acting Ceramic Tube Fuse**. It is widely used in industrial and consumer electronics to provide overcurrent protection for sensitive circuits. --- ### 1. Technical Specifications The following table summarizes the core electronic characteristics of the 3AB200-R: | Feature | Specification | | :--- | :--- | | **Current Rating** | 200 mA (0.2 Amps) | | **Voltage Rating** | 250V AC | | **Fuse Type** | Fast-Acting (F) / Quick Acting | | **Material** | Ceramic Tube with Nickel-plated Brass Caps | | **Standard Dimensions** | 1/4" x 1-1/4" (6.3mm x 32mm) | | **Interrupting Rating** | 35A @ 250V AC / 10,000A @ 125V AC | --- ### 2. Key Component Features * **Ceramic Construction:** Unlike glass fuses, the ceramic body allows for a higher "interrupting rating" (breaking capacity). It can withstand higher temperatures and internal pressure without shattering during a high-energy short circuit. * **Fast-Acting Response:** This fuse is designed to open (blow) very quickly once the current exceeds 200mA. It is used in circuits where there are no high current "surges" or "inrushes" (like motors or large transformers). * **RoHS Compliant:** The "-R" suffix in the part number typically denotes that the component is **RoHS (Restriction of Hazardous Substances) compliant**, meaning it is lead-free. --- ### 3. Application Use Cases Because of its low current rating (200mA) and fast response time, the 3AB200-R is commonly found in: 1. **Multimeters and Test Equipment:** Protecting internal circuitry from user error or surges. 2. **Power Supplies:** Acting as a secondary protection layer for low-power DC rails. 3. **Control Panels:** Protecting delicate PLC (Programmable Logic Controller) inputs or communication ports. 4. **Medical Equipment:** Where high-precision protection is required to prevent component damage. --- ### 4. Cross-Reference and Identification If you are looking for a replacement, ensure the following markings match: * **Marking:** Usually stamped on the metal end caps as `0.2A 250V` or `F200mA`. * **Size:** Ensure it is the large 3AB/3AG size (32mm long) rather than the smaller 5x20mm European size.