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BUSSMANN Fuse: Class RK5, FRN-R Series, Time-Delay, 1.25 A, 250 V AC, 125 V DC - Time-Delay Cylindrical Fuses
BUSSMANNTime-Delay Cylindrical Fuses

BUSSMANN Fuse: Class RK5, FRN-R Series, Time-Delay, 1.25 A, 250 V AC, 125 V DC

The BUSSMANN FRN-R-1-1/4 is a Class RK5, time-delay cylindrical fuse from the FRN-R Series, rated at 1.25 A with 250 V AC and 125 V DC capacity. This non-indicating fuse is designed for overcurrent protection in…

SKU 3G-OTH-28673

Also listed as: FRNR114 · FRN R 1 1 4 · FRN-R-1-1-4

Brand
BUSSMANN
Item
Fuse: Class RK5, FRN-R Series, Time-Delay, 1.25 A, 250 V AC, 125 V DC
Category
Time-Delay Cylindrical Fuses
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Local availability & support — Singapore

Local office
20 Woodlands Link #09-05, Singapore 738733
Phone
+65 8878 8355
Delivery
Same-day or next-business-day delivery within Singapore for in-stock items; 7–14 days for factory-order parts from Europe.
Payment
Invoicing in SGD. PayNow, bank transfer, and corporate PO accepted.
Ships to
Singapore

Technical Specifications

BUSSMANN
Manufacturer Part Number
FRN-R-1-1/4
Series
FRN-R
Type
FRN-R Series, Time-Delay, 1.25 A, Non-Indicating
AC
250 V
DC
125 V

Technical Documents

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BUSSMANN Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

The BUSSMANN FRN-R-1-1/4 is a Class RK5, time-delay cylindrical fuse from the FRN-R Series, rated at 1.25 A with 250 V AC and 125 V DC capacity. This non-indicating fuse is designed for overcurrent protection in industrial circuits, sourced and supported by 3G Electric across 14 industrial departments, with specialist expertise in electrical components.

Frequently Asked Questions

What is a BUSSMANN FRN-R-1-1/4 fuse used for?

The BUSSMANN FRN-R-1-1/4 is a Class RK5 time-delay fuse rated 1.25 A, 250 V AC / 125 V DC. It protects motor circuits, transformers, and lighting panels from overloads and short circuits. Its time-delay characteristic allows it to withstand harmless inrush currents without nuisance opening.

What are the specifications of the BUSSMANN FRN-R-1-1/4 fuse?

This BUSSMANN FRN-R series fuse is rated 1.25 A, 250 V AC and 125 V DC. It is a Class RK5, time-delay, non-indicating cylindrical fuse. The manufacturer part number is FRN-R-1-1/4. It is designed for branch-circuit protection where time-delay is required to handle motor start-up currents.

Where to buy BUSSMANN FRN-R-1-1/4 fuses worldwide?

3G Electric supplies BUSSMANN FRN-R-1-1/4 fuses to customers worldwide. We handle full logistics, customs clearance, and delivery to your site. As a global industrial sourcing partner, we provide genuine BUSSMANN fuses with proper documentation. Contact us for pricing and lead time on your order.

How to select the correct BUSSMANN FRN-R fuse for a motor circuit?

Select a BUSSMANN FRN-R fuse by matching the voltage rating (250 V AC or 125 V DC) and ensuring the amp rating exceeds the motor full-load current. The time-delay feature accommodates starting inrush. Always consult the motor nameplate and local electrical code. 3G Electric can help verify the correct part number for your application.

Used in

Common applications for BUSSMANN
Industrial motor control centers — BUSSMANN LPT series Class T time-delay fuses for branch circuit protection
Semiconductor protection in variable frequency drives — BUSSMANN FWA series fast-acting bolt-on fuses rated 150 V AC/DC
Automotive auxiliary circuit protection — BUSSMANN CB222 series Type II circuit breakers in 12 V DC systems
Control panel overcurrent protection — BUSSMANN FNA series midget time-delay indicating fuses for instrumentation
Main feeder protection in power distribution — BUSSMANN KLU series Class L time-delay bolt-on fuses up to 650 A
Fuse replacement in existing panels — BUSSMANN S-8301-1-R fuse block accepting 3AG and other glass/ceramic fuses

BUSSMANN 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.

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