Littelfuse FLM3-2/10 FLM3.20 Cartridge Fuse User Manual

1. Pengenalan

This manual provides essential information for the safe and proper use of the Littelfuse FLM3-2/10 FLM3.20 Cartridge Fuse. This fuse is designed to protect electrical circuits from overcurrent conditions, preventing damage to equipment and reducing fire hazards. Please read this manual thoroughly before installation or replacement.

2. Maklumat Keselamatan

AMARAN: Electrical shock hazard. Improper installation or handling of electrical components can result in serious injury or death. Always follow these safety guidelines:

• Always disconnect power to the circuit before installing, inspecting, or replacing fuses.
• Gunakan hanya fius dengan vol yang betultage dan amperage ratings for the specific application. Using an incorrect fuse can lead to inadequate protection or circuit damage.
• Jangan memintas atau tamper with fuses.
• If you are unsure about any electrical work, consult a qualified electrician.
• Wear appropriate personal protective equipment (PPE), such as insulated gloves and safety glasses, when working with electrical circuits.

3. Produk Lebihview

The Littelfuse FLM3-2/10 FLM3.20 is a cartridge fuse designed for reliable overcurrent protection. It features a 3-2/10 Amp current rating and a 250 Volt voltage rating, suitable for various electrical applications. The fuse is constructed from ceramic, metal, and plastic components, and is designed for through-hole mounting.

Figure 1: Image of the Littelfuse FLM3-2/10 FLM3.20 Cartridge Fuse. This image displays the cylindrical body of the fuse, typically with metal end caps and markings indicating its current and voltage penilaian.

4. Pemasangan dan Persediaan

Follow these steps for safe installation or replacement of the fuse:

1. Putuskan Kuasa: Ensure that the main power supply to the circuit is completely turned off and locked out, if applicable. Verify with a voltage penguji.
2. Kenal pasti Pemegang Fius: Locate the fuse holder or circuit board where the fuse is to be installed or replaced.
3. Remove Old Fuse (if applicable): Carefully remove the old or blown fuse from its holder. Note its orientation if it's a directional fuse (though cartridge fuses are typically non-directional).
4. Verify Ratings: Confirm that the new Littelfuse FLM3-2/10 FLM3.20 fuse matches the required amperage (3-2/10 Amp) dan voltage (250V) ratings for the circuit.
5. Masukkan Fius Baharu: Insert the new fuse into the fuse holder. For through-hole mounting, ensure the leads are correctly aligned with the holes on the circuit board or terminal block.
6. Sambungan Selamat: Ensure the fuse is securely seated in its holder or properly soldered if it's a permanent through-hole mount.
7. Pulihkan Kuasa: Setelah fius dipasang dengan kukuh, kembalikan kuasa ke litar.

5. Prinsip Operasi

The Littelfuse FLM3-2/10 FLM3.20 fuse functions as a sacrificial device designed to protect electrical circuits. When an overcurrent condition occurs (current exceeding 3-2/10 Amps), the metallic element inside the fuse melts, creating an open circuit and interrupting the flow of electricity. This prevents damage to more expensive components or wiring downstream from the fuse. The fuse does not require any active "operation" by the user; its function is passive and automatic upon an overcurrent event.

6. Penyelenggaraan

Fuses are generally maintenance-free components. Their primary function is to blow and protect the circuit. Regular maintenance involves:

• Pemeriksaan Berkala: Visually inspect fuses during routine equipment maintenance for any signs of damage or discoloration, though a blown fuse is often not visually obvious without removal.
• Penggantian: A blown fuse must always be replaced with a new fuse of the exact same type, ampera, dan voltage rating (e.g., Littelfuse FLM3-2/10 FLM3.20). Never attempt to repair a blown fuse.

7. Penyelesaian masalah

If a fuse blows, it indicates an overcurrent condition in the circuit it protects. Follow these troubleshooting steps:

1. Kenal pasti Fius Tertiup: Disconnect power and visually inspect the fuse. Some fuses have an indicator, or you can use a multimeter to check for continuity.
2. Siasat Punca: Before replacing the fuse, identify and rectify the cause of the overcurrent. Common causes include:
   • Short circuits in wiring or components.
   • Overloaded circuits (too many devices drawing power).
   • Faulty electrical appliances or equipment.
3. Gantikan Fius: Only after the cause has been identified and corrected, replace the blown fuse with a new Littelfuse FLM3-2/10 FLM3.20 fuse of the identical rating.
4. Hembusan Berulang: If the new fuse blows immediately or shortly after replacement, it indicates that the underlying problem has not been resolved. Disconnect power and seek professional assistance.

8. Spesifikasi

9. Waranti dan Sokongan

Littelfuse products are manufactured to high-quality standards. For specific warranty information, please refer to the official Littelfuse webtapak atau hubungi sokongan pelanggan mereka secara langsung. Simpan resit pembelian anda untuk tuntutan waranti.

Untuk sokongan teknikal atau pertanyaan, sila layari Littelfuse official webtapak atau hubungi bahagian perkhidmatan pelanggan mereka.