BUSSMANN FRN-R-4 Time-Delay Cylindrical Fuse
The BUSSMANN FRN-R-4 is a Class RK5, time-delay cylindrical fuse from the FRN-R Series, rated 4 A at 250 V AC and 125 V DC, non-indicating. 3G Electric interprets your demand for this OEM-specified overcurrent…
SKU 3G-OTH-28681
Also listed as: FRNR4 · FRN R 4
Local availability & support
- Delivery
- Worldwide DHL shipping from Singapore; 7–14 business days door-to-door for most destinations.
- Payment
- Invoicing in USD. Bank transfer (SWIFT) and corporate PO accepted.
Need installation or engineering help?
Ask a question
Product Description
The BUSSMANN FRN-R-4 is a Class RK5, time-delay cylindrical fuse from the FRN-R Series, rated 4 A at 250 V AC and 125 V DC, non-indicating. 3G Electric interprets your demand for this OEM-specified overcurrent protection component, sourcing it across 14 industrial departments — with specialist depth in controls to support your electrical system requirements.
Frequently Asked Questions
What is the BUSSMANN FRN-R-4 fuse used for?
The BUSSMANN FRN-R-4 is a Class RK5 time-delay fuse rated 4 A, 250 V AC / 125 V DC. It protects motor circuits, lighting, and control transformers against short circuits and sustained overloads. Its time-delay characteristic prevents nuisance opening during inrush currents, making it suitable for industrial and commercial power distribution.
What are the specifications of the BUSSMANN FRN-R-4 fuse?
The BUSSMANN FRN-R-4 is a Class RK5, time-delay, non-indicating cylindrical fuse. It is rated 4 A, 250 V AC and 125 V DC. It belongs to the FRN-R series and is manufactured under part number FRN-R-4. It provides branch-circuit protection with a 200 kA interrupting rating at rated voltage.
Where to buy BUSSMANN FRN-R-4 fuses worldwide?
3G Electric supplies BUSSMANN FRN-R-4 fuses worldwide. As a global industrial solutions provider, we handle full logistics, customs clearance, and delivery to your site. Contact us for pricing and lead time on this Class RK5 time-delay fuse. We source genuine BUSSMANN components for industrial maintenance and OEM applications.
How to select the right BUSSMANN FRN-R series fuse for a motor circuit?
Select a BUSSMANN FRN-R series fuse by matching the voltage (250 V AC or 125 V DC) and current rating (e.g., 4 A for the FRN-R-4) to the motor full-load amps. Use the time-delay characteristic to handle startup inrush without nuisance tripping. Always consult the motor nameplate and local code for proper sizing.
Used in
Common applications for BUSSMANNBUSSMANN Products
3G Electric supplies BUSSMANN time-delay cylindrical fuses. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.
