Description
Technical Specifications
Based on industrial standards like IS: 9926, a single strand of 38 SWG tinned copper wire provides:
-
Approx. Fusing Current: ~3.5 Amps to 4 Amps. This is the peak current where the wire will melt to break the circuit.
-
Safe Current Rating: ~1 Amp to 1.5 Amps. It is often used to protect low-power internal circuits that cannot handle even standard 5A residential loads.
-
Resistance at 20°C: Approximately 0.95 to 1.05 $\Omega/m$.
-
Material: High-purity copper with a tin coating to prevent oxidation and ensure reliable electrical contact.
Common Applications
-
Electronic Equipment: Protection for internal PCBs (Printed Circuit Boards) and sensitive laboratory instruments.
-
Telecommunications: Used in telephone exchange equipment or signal-level protection where high currents would destroy delicate components.
-
Hobbyist Projects: Ideal for small-scale robotics or DIY electronics where a very low “blow” point is required for safety.
Product Recommendations
You can find 38 SWG fuse wire in industrial reels or smaller coils for maintenance and repair.
The 38 SWG Tinned Copper Wire is an industrial-grade option designed for precision electronics and low-current fusing. The tin coating makes it extremely easy to solder and highly resistant to corrosion in humid environments.
For general industrial overcurrent protection needs, the Tinned Copper Fuse Wire is a reliable choice. It is manufactured to maintain a consistent diameter, ensuring predictable fusing behavior at low amperage.
Installation Best Practices
-
Handle with Care: Because 38 SWG wire is roughly the thickness of a human hair, it is extremely fragile. Avoid pulling it tight or using heavy pliers that could “nick” the wire, as this will significantly lower its fusing point.
-
Clean Contacts: For low-current circuits, even minor oxidation on terminals can cause a failure. Ensure all connection points are bright and clean before installation.
-
Avoid Over-Tension: Copper expands when warm. Leave a small amount of slack so the wire doesn’t snap mechanically under a normal operational load.




Reviews
There are no reviews yet.