100 pcs JK30 Plug-In Self-Resetting Fuses — Circuit Protection, 30V Why this product matters Automatically protects circuits from overloads and short circuits without manual fuse replacement. The polymer PTC design interrupts current during a fault and resets itself when the fault clears, reducing downtime and maintenance. Plug-in design speeds installation and replacement, ideal for repair benches, production lines, and field service. Low resistance and durable polymer construction provide reliable, repeatable protection for sensitive low-voltage DC electronics. Key features Voltage rating: 30V (suitable for low-voltage DC circuits up to 30V) Current ratings: 0.9A, 1.1A, 1.35A, 1.5A, 1.6A, 1.85A, 2A, 2.5A, 3A, 4A, 5A, 6A, 7A, 8A, 9A, 10A Self-resetting polymer PTC fuses: protect and restore automatically after a fault Plug-in JK30 design for quick installation and easy replacement Constructed from durable polymer PTC material with low resistance for consistent performance Available in multiple ratings including 6A for specific needs Pack quantity: 100 pcs — convenient bulk supply for workshops and production How it solves common problems Prevents permanent damage from temporary overloads and shorts while avoiding repeated part changes. Minimizes service time: simply remove and replace a plug-in fuse or let the device reset itself after the fault is cleared. Offers predictable, low-resistance protection so connected equipment sees minimal voltage drop during normal operation. Practical applications (real-world examples) Power adapters and chargers: Protect adapter output and connected devices from short circuits or overloads in adapters and wall-wart power supplies. LED drivers and consumer electronics: Prevent driver or board damage on LED strips, small amplifiers, media devices, and other low-voltage electronics. Automotive, hobby, and RC projects: Safeguard 12V and other low-voltage vehicle circuits, model electronics, and battery-powered hobby equipment from accidental shorts and current spikes. Selection and installation tips Choose a rating slightly above your normal operating current to allow expected load while still providing timely protection. Use only in low-voltage DC circuits up to 30V as specified. The JK30 plug-in form factor enables fast swaps and easy inventory management; keep spare fuses on hand for quick service. Reliable, repeatable protection in a convenient 100-piece pack — JK30 polymer PTC fuses provide automatic reset, quick installation, and a wide range of current ratings to match many small DC applications.