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BUSSMANN Fuse: Class RK5, FRS-R Series, Time-Delay, 3.5 A, 600 V AC, 300 V DC - Time-Delay Cylindrical Fuses
BUSSMANNTime-Delay Cylindrical Fuses

BUSSMANN Fuse: Class RK5, FRS-R Series, Time-Delay, 3.5 A, 600 V AC, 300 V DC

The BUSSMANN Fuse is a Class RK5, FRS-R Series, Time-Delay, 3.5 A, Non-Indicating cylindrical fuse rated for 600 V AC and 300 V DC (MPN FRS-R-3-1/2). 3G Electric interprets customer demand and delivers this genuine…

SKU 3G-OTH-25523

Also listed as: FRSR312 · FRS R 3 1 2 · FRS-R-3-1-2

Brand
BUSSMANN
Item
Fuse: Class RK5, FRS-R Series, Time-Delay, 3.5 A, 600 V AC, 300 V DC
Category
Time-Delay Cylindrical Fuses
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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.

Technical Specifications

BUSSMANN
Manufacturer Part Number
FRS-R-3-1/2
Series
FRS-R
Type
FRS-R Series, Time-Delay, 3.5 A, Non-Indicating
AC
600 V
DC
300 V

Technical Documents

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

Product Description

The BUSSMANN Fuse is a Class RK5, FRS-R Series, Time-Delay, 3.5 A, Non-Indicating cylindrical fuse rated for 600 V AC and 300 V DC (MPN FRS-R-3-1/2). 3G Electric interprets customer demand and delivers this genuine industrial fuse across 14 departments, with specialist depth in combustion, pumps and controls as an authorised distributor.

Frequently Asked Questions

What is the BUSSMANN FRS-R-3-1/2 fuse used for?

The BUSSMANN FRS-R-3-1/2 is a Class RK5 time-delay cylindrical fuse rated 3.5 A, 600 V AC / 300 V DC. It protects motor circuits, transformers, and other inductive loads from overcurrent and short circuits in industrial control panels and power distribution systems.

What are the specifications of the BUSSMANN FRS-R-3-1/2 fuse?

This BUSSMANN FRS-R Series fuse has a current rating of 3.5 A, voltage rating of 600 V AC and 300 V DC, and is non-indicating. It is a Class RK5 time-delay cylindrical fuse with MPN FRS-R-3-1/2, designed for high inrush applications.

Where to buy BUSSMANN FRS-R-3-1/2 fuses worldwide?

3G Electric supplies BUSSMANN FRS-R-3-1/2 fuses worldwide. As a global industrial distributor, we handle full logistics, customs clearance, and delivery to your location. Contact us for availability and lead time on this BUSSMANN fuse.

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

Select a BUSSMANN FRS-R time-delay fuse rated at 125% to 150% of the motor full-load current to handle startup inrush. Verify voltage rating (600 V AC / 300 V DC) and ensure Class RK5 rejection clips are used in the fuse holder for proper fit.

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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Compatible alternatives & equivalents

Cross-referenced by specification & description
BUSSMANN Fuse: Class RK5, FRS-R Series, Time-Delay, 6.25 A, 600 V AC, 300 V DC, Non-Indicating (MPN FRS-R-6-1/4)
BUSSMANN
BUSSMANN Fuse: Class RK5, FRS-R Series, Time-Delay, 6.25 A, 600 V AC, 300 V DC, Non-Indicating (MPN FRS-R-6-1/4)
BUSSMANN Fuse: Class RK5, FRS-R Series, Time-Delay, 4 A, 600 V AC, 300 V DC, Non-Indicating (MPN FRS-R-4)
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BUSSMANN Fuse: Class RK5, FRS-R Series, Time-Delay, 4 A, 600 V AC, 300 V DC, Non-Indicating (MPN FRS-R-4)
BUSSMANN Fuse: Class RK5, FRS-R Series, Time-Delay, 2.8 A, 600 V AC, 300 V DC, Non-Indicating (MPN FRS-R-2-8/10)
BUSSMANN
BUSSMANN Fuse: Class RK5, FRS-R Series, Time-Delay, 2.8 A, 600 V AC, 300 V DC, Non-Indicating (MPN FRS-R-2-8/10)
BUSSMANN Fuse: Class RK5, FRS-R Series, Time-Delay, 1.8 A, 600 V AC, 300 V DC, Non-Indicating (MPN FRS-R-1-8/10)
BUSSMANN
BUSSMANN Fuse: Class RK5, FRS-R Series, Time-Delay, 1.8 A, 600 V AC, 300 V DC, Non-Indicating (MPN FRS-R-1-8/10)
BUSSMANN Fuse: Class RK5, FRS-R Series, Time-Delay, 1 A, 600 V AC, 300 V DC, Non-Indicating (MPN FRS-R-1)
BUSSMANN
BUSSMANN Fuse: Class RK5, FRS-R Series, Time-Delay, 1 A, 600 V AC, 300 V DC, Non-Indicating (MPN FRS-R-1)
BUSSMANN Fuse: Class RK5, FRS-R Series, Time-Delay, 1.4 A, 600 V AC, 300 V DC, Non-Indicating (MPN FRS-R-1-4/10)
BUSSMANN
BUSSMANN Fuse: Class RK5, FRS-R Series, Time-Delay, 1.4 A, 600 V AC, 300 V DC, Non-Indicating (MPN FRS-R-1-4/10)

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BUSSMANN Fuse: FNM Series, Midget, Time-Delay, 30 A, 250 V AC, 13/32 in x 1 1/2 in, Non-Indicating (MPN FNM-30)
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