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BUSSMANN Fuse: Class RK5, FRS-R Series, Time-Delay, 125 A, 600 V AC, 300 V DC - Time-Delay Blade Fuses
BUSSMANNTime-Delay Blade Fuses

BUSSMANN Fuse: Class RK5, FRS-R Series, Time-Delay, 125 A, 600 V AC, 300 V DC

The BUSSMANN FRS-R-125 is a Class RK5, time-delay blade fuse from the FRS-R Series, rated 125 A at 600 V AC and 300 V DC, non-indicating. 3G Electric interprets this demand and delivers the exact OEM part, backed by…

SKU 3G-OTH-26501

Also listed as: FRSR125 · FRS R 125

Brand
BUSSMANN
Item
Fuse: Class RK5, FRS-R Series, Time-Delay, 125 A, 600 V AC, 300 V DC
Category
Time-Delay Blade Fuses
Available to Order
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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
FRS-R-125
Series
FRS-R
Type
FRS-R Series, Time-Delay, 125 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 FRS-R-125 is a Class RK5, time-delay blade fuse from the FRS-R Series, rated 125 A at 600 V AC and 300 V DC, non-indicating. 3G Electric interprets this demand and delivers the exact OEM part, backed by specialist depth in electrical components across 14 industrial departments.

Frequently Asked Questions

What is a BUSSMANN FRS-R-125 fuse used for?

The BUSSMANN FRS-R-125 is a Class RK5 time-delay fuse rated 125 A, 600 V AC / 300 V DC. It protects motors, transformers, and other inductive loads from short circuits and sustained overloads in industrial electrical panels and machinery.

What are the specifications of the BUSSMANN FRS-R-125 fuse?

The BUSSMANN FRS-R-125 is a non-indicating, time-delay blade fuse from the FRS-R series. It is rated 125 A, 600 V AC, 300 V DC, and is designed for Class RK5 applications. The manufacturer part number is FRS-R-125.

Where to buy BUSSMANN FRS-R-125 fuses worldwide?

3G Electric supplies the BUSSMANN FRS-R-125 fuse to customers worldwide. As a global industrial solutions provider, we handle full logistics, customs clearance, and delivery to your site. Contact us for a quote and lead time.

How to select the right BUSSMANN FRS-R fuse for an application?

Select the BUSSMANN FRS-R fuse based on continuous current (125 A for this model), system voltage (600 V AC or 300 V DC), and the need for time-delay characteristics to handle inrush from motors. Always verify the interrupting rating matches your fault current.

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 blade 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, 200 A, 600 V AC, 300 V DC, Non-Indicating (MPN FRS-R-200)
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BUSSMANN Fuse: Class RK5, FRS-R Series, Time-Delay, 200 A, 600 V AC, 300 V DC, Non-Indicating (MPN FRS-R-200)
BUSSMANN Fuse: Class RK5, FRN-R Series, Time-Delay, 125 A, 250 V AC, 125 V DC, Non-Indicating (MPN FRN-R-125)
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BUSSMANN Fuse: Class RK5, FRN-R Series, Time-Delay, 125 A, 250 V AC, 125 V DC, Non-Indicating (MPN FRN-R-125)
BUSSMANN Fuse: Class RK5, FRN-R Series, Time-Delay, 200 A, 250 V AC, 125 V DC, Non-Indicating (MPN FRN-R-200)
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BUSSMANN Fuse: Class RK5, FRN-R Series, Time-Delay, 200 A, 250 V AC, 125 V DC, Non-Indicating (MPN FRN-R-200)
BUSSMANN Fuse: Class RK5, FRS-R Series, Time-Delay, 600 A, 600 V AC, 300 V DC, Non-Indicating (MPN FRS-R-600)
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BUSSMANN Fuse: Class RK5, FRS-R Series, Time-Delay, 600 A, 600 V AC, 300 V DC, Non-Indicating (MPN FRS-R-600)
BUSSMANN Fuse: Class RK5, FRS-R Series, Time-Delay, 500 A, 600 V AC, 300 V DC, Non-Indicating (MPN FRS-R-500)
BUSSMANN
BUSSMANN Fuse: Class RK5, FRS-R Series, Time-Delay, 500 A, 600 V AC, 300 V DC, Non-Indicating (MPN FRS-R-500)
BUSSMANN Fuse: Class RK5, FRS-R Series, Time-Delay, 250 A, 600 V AC, 300 V DC, Non-Indicating (MPN FRS-R-250)
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BUSSMANN Fuse: Class RK5, FRS-R Series, Time-Delay, 250 A, 600 V AC, 300 V DC, Non-Indicating (MPN FRS-R-250)

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BUSSMANN Fuse: Class RK5, FRS-R Series, Time-Delay, 150 A, 600 V AC, 300 V DC, Non-Indicating (MPN FRS-R-150)
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BUSSMANN Fuse: Class RK5, FRN-R Series, Time-Delay, 100 A, 250 V AC, 125 V DC, Non-Indicating (MPN FRN-R-100)
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BUSSMANN Fuse: Class RK5, FRN-R Series, Time-Delay, 100 A, 250 V AC, 125 V DC, Non-Indicating (MPN FRN-R-100)
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BUSSMANN Fuse: Class RK5, FRN-R Series, Time-Delay, 300 A, 250 V AC, 250 V DC, Non-Indicating (MPN FRN-R-300)
BUSSMANN Fuse: Class RK5, FRN-R Series, Time-Delay, 150 A, 250 V AC, 125 V DC, Non-Indicating (MPN FRN-R-150)
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BUSSMANN Fuse: Class RK5, FRN-R Series, Time-Delay, 150 A, 250 V AC, 125 V DC, Non-Indicating (MPN FRN-R-150)
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