The **3AG15-R** is a specific model of a glass body cartridge fuse, commonly used in automotive, industrial, and consumer electronics to provide overcurrent protection. --- ### Technical Specifications Below are the primary technical characteristics of the 3AG15-R: | Parameter | Specification | | :--- | :--- | | **Series** | 3AG (Industry standard size) | | **Current Rating** | 15 Amperes (15A) | | **Voltage Rating** | 250V AC (typically) | | **Fuse Type** | Fast-Acting / Fast Blow | | **Body Material** | Glass | | **Dimensions** | 6.3mm x 32mm (1/4" x 1-1/4") | | **Termination Style** | Cartridge (Cylindrical) | | **RoHS Compliant** | Yes (Indicated by the "-R" suffix) | --- ### Component Breakdown #### 1. The "3AG" Designation The term **3AG** refers to the physical size of the fuse. It is one of the most common fuse standards in North America. * **Diameter:** 6.35 mm (0.25 inches) * **Length:** 31.75 mm (1.25 inches) #### 2. The Current Rating (15A) The "15" indicates that the fuse is designed to allow up to 15 Amps of current to flow through the circuit under normal conditions. If the current exceeds this threshold significantly, the internal filament will melt, breaking the circuit to prevent fire or damage to other components. #### 3. The "-R" Suffix In electronic part numbering, the **-R** typically stands for **RoHS Compliant**. This means the part is manufactured without the use of hazardous substances like lead, mercury, or cadmium, making it safe for modern environmental standards. #### 4. Fast-Acting Mechanism As a fast-acting fuse, the 3AG15-R is designed to "blow" almost instantly when an overload occurs. This is critical for protecting sensitive electronic components that cannot withstand even brief surges in current. --- ### Common Applications * **Automotive:** Older vehicle wiring and accessory circuits. * **Power Supplies:** Protecting the input stage of AC-to-DC converters. * **Consumer Electronics:** Amplifiers, older television sets, and microwave ovens. * **Test Equipment:** Multimeters and oscilloscopes.