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BUSSMANN Fuse: Class RK5, FRN-R Series, Time-Delay, 4.5 A, 250 V AC, 125 V DC - Time-Delay Cylindrical Fuses
BUSSMANNTime-Delay Cylindrical Fuses

BUSSMANN Fuse: Class RK5, FRN-R Series, Time-Delay, 4.5 A, 250 V AC, 125 V DC

The BUSSMANN FRN-R Series Class RK5 Time-Delay Cylindrical Fuse (MPN FRN-R-4-1/2) is a 4.5 A, non-indicating fuse rated for 250 V AC and 125 V DC. 3G Electric interprets customer demand and delivers this genuine…

SKU 3G-OTH-28736

Also listed as: FRNR412 · FRN R 4 1 2 · FRN-R-4-1-2

Brand
BUSSMANN
Item
Fuse: Class RK5, FRN-R Series, Time-Delay, 4.5 A, 250 V AC, 125 V DC
Category
Time-Delay Cylindrical Fuses
Available to Order
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Technical specs
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Local availability & support — the Philippines

Delivery
5–8 business days door-to-door; Bureau of Customs clearance typically 2–4 business days.
Payment
Invoicing in PHP or USD. Bank transfer and corporate PO accepted.
Ships to
Manila, Quezon City, Cebu, Davao, Batangas

Technical Specifications

BUSSMANN
Manufacturer Part Number
FRN-R-4-1/2
Series
FRN-R
Type
FRN-R Series, Time-Delay, 4.5 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 Series Class RK5 Time-Delay Cylindrical Fuse (MPN FRN-R-4-1/2) is a 4.5 A, non-indicating fuse rated for 250 V AC and 125 V DC. 3G Electric interprets customer demand and delivers this genuine industrial fuse across 14 departments — with specialist depth in electrical components as an authorised distributor.

Supplied to the Philippines — compatible with 60 Hz installations. DHL Express delivery to Manila, Quezon City, Cebu, customs and duties handled door-to-door.

Frequently Asked Questions

What is the BUSSMANN FRN-R-4-1/2 fuse used for?

The BUSSMANN FRN-R-4-1/2 is a Class RK5 time-delay cylindrical fuse rated 4.5 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-4-1/2 fuse?

The BUSSMANN FRN-R-4-1/2 is a Class RK5, time-delay, non-indicating fuse rated 4.5 A, 250 V AC and 125 V DC. It belongs to the FRN-R Series and has the manufacturer part number FRN-R-4-1/2. It is designed for branch-circuit protection in industrial control panels and motor starters.

Where to buy BUSSMANN FRN-R-4-1/2 fuses worldwide?

You can source the BUSSMANN FRN-R-4-1/2 fuse through 3G Electric, a global industrial equipment distributor. We handle full logistics, customs clearance, and delivery to worldwide destinations. Contact us for availability and lead time; we supply genuine BUSSMANN components for industrial maintenance and OEM applications.

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

To select the correct BUSSMANN FRN-R fuse, match the voltage rating (250 V AC or 125 V DC) and ensure the amp rating (4.5 A) exceeds the motor full-load current. The time-delay feature handles startup inrush. Always consult the NEC or local code for branch-circuit protection sizing. 3G Electric can assist with cross-referencing.

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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