FLQ010H

The **Littelfuse FLQ010H 500V AC time-delay fuse** is a high-performance industrial fuse designed to provide **supplemental protection** for critical electrical components in demanding applications. Engineered by Littelfuse, a global leader in circuit protection solutions, this fuse is specifically optimized for **control power transformers, solenoids, and circuits with high inrush currents**, ensuring reliable operation in industrial environments where transient overcurrents are common. ### **Key Features and Benefits** The FLQ series fuses are renowned for their **time-delay characteristics**, which allow temporary overcurrents—such as those from motor starts or transformer energization—without nuisance tripping. This makes them ideal for applications where **inrush currents** can exceed normal operating levels but sustained faults must be interrupted to prevent damage. The **500V AC rating** ensures compatibility with a wide range of industrial control systems, including motor control centers (MCCs), panelboards, and machinery with inductive loads. **Typical Applications Include:** - **Control power transformers** – Protecting secondary circuits from overloads while allowing temporary inrush during startup. - **Solenoids and contactors** – Safeguarding coils from damage due to prolonged overcurrents. - **Industrial machinery** – Providing backup protection in circuits where high inrush is expected, such as CNC machines, conveyors, and automated systems. - **HVAC and refrigeration systems** – Ensuring reliable operation of compressors and motors with high starting currents. - **Machine tools and automation** – Supporting precision control systems where downtime due to nuisance fuse blowing must be minimized. ### **Why Choose Littelfuse FLQ010H?** Littelfuse has been a trusted name in circuit protection for over a century, delivering solutions that meet the rigorous demands of industrial, commercial, and utility applications. The **FLQ series** is part of Littelfuse’s extensive portfolio of **time-delay fuses**, designed to balance **protection, performance, and longevity**. Unlike standard fuses that may interrupt unnecessarily during transient events, the FLQ010H’s **delayed response** ensures that only sustained faults trigger disconnection, reducing false trips and improving system uptime. **Industry-Recognized Reliability** The FLQ010H is built to meet **UL 248-14** standards, ensuring compliance with North American safety requirements. Its **compact design** allows for easy installation in standard fuse holders, while the **high interrupting rating** provides robust protection against short circuits. Professionals in **manufacturing, oil & gas, mining, and renewable energy** rely on Littelfuse fuses for their ability to withstand harsh conditions, including vibration, temperature extremes, and electrical noise. ### **Selection and Installation Best Practices** When specifying the FLQ010H, engineers and technicians should consider: - **Load characteristics** – Ensure the fuse’s time-delay curve matches the inrush profile of the protected equipment. - **Voltage rating** – The 500V AC rating covers most industrial control systems, but always verify compatibility with the application. - **Mounting requirements** – The FLQ series is designed for **Class CC, J, or T fuse holders**, depending on the specific variant. Consult Littelfuse’s technical documentation for proper fitment. - **Coordinated protection** – For optimal system safety, pair the FLQ010H with upstream protective devices (e.g., circuit breakers or current-limiting fuses) to achieve a **selective coordination** scheme. ### **Littelfuse’s Commitment to Quality** With a global manufacturing footprint and a reputation for innovation, Littelfuse ensures that every FLQ010H fuse undergoes rigorous **testing and quality control** before reaching customers. The company’s **application engineering support** provides additional guidance on fuse selection, reducing the risk of misapplication and enhancing system reliability. For engineers, electricians, and maintenance teams seeking a **dependable, high-performance time-delay fuse**, the Littelfuse FLQ010H delivers **unmatched protection, durability, and peace of mind** in even the most challenging industrial environments.