The **BK-HTB-58M-R** is a specific electronic component manufactured by **Eaton (Bussmann Series)**. It belongs to the family of panel-mount fuse holders, designed to provide a secure and accessible housing for fuses within an electrical circuit. --- ## 1. Technical Specifications The following table outlines the primary electrical and mechanical characteristics of the BK-HTB-58M-R: | Feature | Specification | | :--- | :--- | | **Manufacturer** | Eaton (Bussmann) | | **Part Number** | BK-HTB-58M-R | | **Fuse Size Accepted** | 5mm x 20mm | | **Current Rating** | 16 Amps (UL) / 6.3 Amps (VDE/SEMKO) | | **Voltage Rating** | 250 Volts AC | | **Terminal Type** | 3/16" (4.8mm) Quick Connect / Solder | | **Mounting Style** | Rear Mount / Panel Mount | | **Knob Type** | Low Profile / Screwdriver Slot | | **Body Material** | Thermoplastic (High Temperature) | --- ## 2. Key Component Features The "BK-HTB-58M-R" nomenclature reveals specific details about its construction: ### A. Rear-Hex Nut Mounting Unlike front-mount versions, the "8" in the HTB-58 series indicates that the hex nut is tightened from the **rear** of the panel. This is ideal for aesthetics and preventing tampering from the front. ### B. Screwdriver Slot Knob The "M" designation refers to the knob style. It features a flat-head screwdriver slot, which is a safety feature requiring a tool for fuse replacement, preventing accidental contact with live components. ### C. Termination The terminals are designed for versatility. They support **3/16" Quick Connect** terminals for fast assembly or direct **Soldering** for a permanent, vibration-resistant connection. ### D. Compliance The "R" suffix indicates that the part is **RoHS Compliant**, meeting environmental standards for the restriction of hazardous substances. --- ## 3. Application Use Cases This component is commonly used in professional and industrial electronic devices, including: * **Power Supplies:** Protecting the AC input stage. * **Medical Equipment:** High-reliability fuse housing. * **Testing & Measurement:** Integrated into the chassis of oscilloscopes and signal generators. * **Industrial Controls:** Panel-integrated protection for control circuits. --- ## 4. Mechanical Mounting Diagram (Typical) ```text [ Front Panel ] <--- [ Fuse Knob ] | [ Panel Hole ] (1/2" Diameter D-flat) | [ Fuse Body ] <--- [ Hex Nut (Rear) ] | [ Terminals ] (Solder/Quick Connect) ```