Glass Fuse 4 Amp – 5x20mm Fast Blow Cartridge Fuse (250V)
Safeguard your electronic circuits with this high-quality 4A 250V Fast Blow Glass Tube Fuse in the standard 5x20mm form factor. Designed for rapid overcurrent protection, this small but essential component is a trusted choice among engineers, hobbyists, and electronics manufacturers across India.
How It Works
When current exceeding 4 Amperes flows through the circuit, the internal silver alloy element instantly melts, breaking the circuit and protecting your valuable components from damage. The fast-acting (F-type) response ensures immediate disconnection before a fault can escalate.
Key Specifications
| Parameter | Value |
|---|---|
| Current Rating | 4A (4 Ampere) |
| Voltage Rating | 250V AC |
| Fuse Size | 5mm × 20mm |
| Fuse Type | Fast Blow (F-type) |
| Body Material | Transparent Glass Tube |
| End Caps | Nickel-plated Brass |
| Response | Fast Acting |
Applications
- PCB-mount and panel-mount fuse holders
- Power supply units (SMPS, adapters)
- Consumer electronics and home appliances
- Arduino, Raspberry Pi & DIY electronics projects
- Automotive accessories (12V/24V circuits)
- Battery chargers and inverters
- Industrial control panels
Why Choose This Fuse?
- ✔ Precise 4A rating for accurate protection
- ✔ Standard 5x20mm size – fits all compatible fuse holders
- ✔ Crystal-clear glass body for easy visual inspection of blown status
- ✔ Meets IEC 60127 standards
- ✔ Ideal replacement for blown fuses in appliances and circuits
Compatibility
Fits all standard 5x20mm panel mount, PCB mount, and wire lead fuse holders. Compatible with 125V and 250V circuits.






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