The **HTB-94M-R** is a high-performance, panel-mounted fuse holder manufactured by **Eaton (Bussmann Series)**. It is designed for 5mm x 20mm cartridges and is widely used in industrial and medical equipment due to its "finger-safe" design and reliability. --- ### ## Technical Specifications The following table outlines the primary electronic and physical characteristics of the HTB-94M-R: | Feature | Specification | | :--- | :--- | | **Compatible Fuse Size** | 5mm x 20mm | | **Current Rating** | 16 Amps (UL), 6.3 Amps (VDE) | | **Voltage Rating** | 250 Volts AC | | **Mounting Type** | Panel Mount (Snap-in) | | **Terminal Type** | 3/16" (4.8mm) Quick Connect / Solder | | **Knob Type** | Low Profile, Screwdriver Slot | | **Body Material** | High-temperature Thermoplastic | | **Standards** | UL Recognized, CSA Certified, VDE, SEMKO | --- ### ### Key Components and Features 1. **Carrier (Knob):** * The "M" in the part number signifies a **Metric** carrier designed for 5x20mm fuses. * The "R" indicates a **Screwdriver Slot** release mechanism, which prevents accidental manual removal and enhances safety. 2. **Housing Body:** * Constructed from high-grade thermoplastic with a high Flammability Rating (UL 94V0). * Designed for **Snap-in mounting**, which reduces assembly time as it does not require a mounting nut. 3. **Terminals:** * The rear features dual-purpose terminals. They can be used with standard **4.8mm quick-connect crimps** or can be directly **soldered** for a permanent connection. 4. **Internal Contacts:** * Typically made of tin-plated brass or copper alloy to ensure low contact resistance and prevent overheating during high-current draws. --- ### ### Part Number Breakdown (Nomenclature) Understanding the suffix helps in identifying the exact electronic configuration: * **HTB:** Series Prefix (High Temperature Block). * **9:** Body Configuration (Snap-in mounting for specific panel thicknesses). * **4:** Terminal Style (3/16" Quick Connect). * **M:** Fuse Size (Metric 5mm x 20mm). * **R:** Knob Style (Low profile, screwdriver release). --- ### ### Typical Applications * **Medical Equipment:** Used in diagnostic tools requiring high safety standards. * **Industrial Controls:** Protecting PLCs and sensitive circuitry from overcurrent. * **Power Supplies:** Common in rack-mounted networking and telecommunications hardware.