Send a part number, a photo, or a whole BOM — we supply it and stand behind it. Worldwide shipping to 80+ countries.

BUSSMANN FRS-R-20 Time-Delay Cylindrical Fuse - Time-Delay Cylindrical Fuses
BUSSMANNTime-Delay Cylindrical Fuses

BUSSMANN FRS-R-20 Time-Delay Cylindrical Fuse

The BUSSMANN Fuse: Class RK5 is a time-delay cylindrical fuse from the FRS-R Series, rated at 20 A, 600 V AC and 300 V DC, non-indicating (MPN FRS-R-20). 3G Electric interprets your demand for industrial electrical…

SKU 3G-OTH-24974

Also listed as: FRSR20 · FRS R 20

Brand
BUSSMANN
Item
FRS-R-20 Time-Delay Cylindrical Fuse
Category
Time-Delay Cylindrical Fuses
Available to Order
Trade pricing by quote — replies within 24h
Qty
WhatsApp an engineerMessage via Telegram
No account needed — your quote request goes straight to our engineers. A free account lets you track quotes and re-order faster.
Worldwide Shipping
Air & sea freight
Datasheet on Request
Technical specs
1-Day Quote
Replies within 24h

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-20
Series
FRS-R
Type
FRS-R Series, Time-Delay, 20 A, Non-Indicating
AC
600 V
DC
300 V

Technical Documents

No technical documents available for this product.
Request documentation
Not sure this is the right part? Get a recommendation.

Need installation or engineering help?

Installation, commissioning, maintenance plans, system design, and bundled product + service quotes — one team handles the full scope.
Talk to an engineer

Ask a question

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

Product Description

The BUSSMANN Fuse: Class RK5 is a time-delay cylindrical fuse from the FRS-R Series, rated at 20 A, 600 V AC and 300 V DC, non-indicating (MPN FRS-R-20). 3G Electric interprets your demand for industrial electrical protection and sources this genuine BUSSMANN component, backed by our specialist expertise across 14 industrial departments — including electrical — to ensure you get the right solution.

Frequently Asked Questions

What is the BUSSMANN FRS-R-20 fuse used for?

The BUSSMANN FRS-R-20 is a Class RK5 time-delay cylindrical fuse rated 20 A, 600 V AC, 300 V DC. It protects motor circuits, transformers, and other inductive loads from overcurrent and short circuits, allowing harmless inrush currents without nuisance opening.

What are the specifications of the BUSSMANN FRS-R-20 fuse?

The BUSSMANN FRS-R-20 is part of the FRS-R series, a Class RK5 time-delay fuse. It has a current rating of 20 A, voltage rating of 600 V AC and 300 V DC, and is non-indicating. The manufacturer part number is FRS-R-20.

Where to buy the BUSSMANN FRS-R-20 fuse worldwide?

3G Electric supplies the BUSSMANN FRS-R-20 fuse worldwide. As a global industrial equipment distributor, we handle full logistics, customs clearance, and delivery to your location. Contact us for availability and lead time on this Class RK5 time-delay fuse.

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

To select the correct BUSSMANN FRS-R fuse, match the voltage rating (600 V AC or 300 V DC) and current rating (e.g., 20 A) to your circuit requirements. The time-delay feature handles motor start-up surges. Verify the Class RK5 rejection feature fits your fuse holder.

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.

You might also need

Burners & Combustion Pumps & Compressors Spare Parts All Products

Compatible alternatives & equivalents

Cross-referenced by specification & description
Class RK5 time-delay cylindrical fuse from the FRS-R series, rated 25 A, 600 V AC, and 300 V DC. Non-indicating design. Provides overcurrent protection for motor circuits, transformers, and other inductive loads, allowing temporary inrush currents without nuisance opening. Suitable for use in industrial control panels and distribution equipment
BUSSMANN
Class RK5 time-delay cylindrical fuse from the FRS-R series, rated 25 A, 600 V AC, and 300 V DC. Non-indicating design. Provides overcurrent protection for motor circuits, transformers, and other inductive loads, allowing temporary inrush currents without nuisance opening. Suitable for use in industrial control panels and distribution equipment
BUSSMANN Fuse: Class RK5, FRS-R Series, Time-Delay, 30 A, 600 V AC, 300 V DC, Non-Indicating (MPN FRS-R-30)
BUSSMANN
BUSSMANN Fuse: Class RK5, FRS-R Series, Time-Delay, 30 A, 600 V AC, 300 V DC, Non-Indicating (MPN FRS-R-30)
Class RK5 time-delay cylindrical fuse rated 5 A, 600 V AC, 300 V DC. Non-indicating type from the FRS-R series. Provides overcurrent protection for motor circuits, transformers, and other inductive loads in industrial control panels, HVAC equipment, and distribution systems
BUSSMANN
Class RK5 time-delay cylindrical fuse rated 5 A, 600 V AC, 300 V DC. Non-indicating type from the FRS-R series. Provides overcurrent protection for motor circuits, transformers, and other inductive loads in industrial control panels, HVAC equipment, and distribution systems
BUSSMANN Fuse: Class RK5, FRS-R Series, Time-Delay, 15 A, 600 V AC, 300 V DC, Non-Indicating (MPN FRS-R-15)
BUSSMANN
BUSSMANN Fuse: Class RK5, FRS-R Series, Time-Delay, 15 A, 600 V AC, 300 V DC, Non-Indicating (MPN FRS-R-15)
BUSSMANN Fuse: Class RK5, FRS-R Series, Time-Delay, 1.25 A, 600 V AC, 300 V DC, Non-Indicating (MPN FRS-R-1-1/4)
BUSSMANN
BUSSMANN Fuse: Class RK5, FRS-R Series, Time-Delay, 1.25 A, 600 V AC, 300 V DC, Non-Indicating (MPN FRS-R-1-1/4)
BUSSMANN Fuse: Class RK5, FRN-R Series, Time-Delay, 20 A, 250 V AC, 125 V DC, Non-Indicating (MPN FRN-R-20)
BUSSMANN
BUSSMANN Fuse: Class RK5, FRN-R Series, Time-Delay, 20 A, 250 V AC, 125 V DC, Non-Indicating (MPN FRN-R-20)

More from BUSSMANN

View all BUSSMANN parts
Time-delay cylindrical fuse rated 2 A, 250 V AC, 5 mm x 20 mm size. Provides overcurrent protection with time-delay characteristic to tolerate temporary inrush currents. Suitable for use in control panels, power supplies, and lighting circuits
BUSSMANN
Time-delay cylindrical fuse rated 2 A, 250 V AC, 5 mm x 20 mm size. Provides overcurrent protection with time-delay characteristic to tolerate temporary inrush currents. Suitable for use in control panels, power supplies, and lighting circuits
Time-delay cylindrical fuse rated 400 mA at 250 V AC, with a 5 mm x 20 mm body. Designed for overcurrent protection in circuits subject to temporary inrush currents, such as control transformers, solenoids, and power supplies
BUSSMANN
Time-delay cylindrical fuse rated 400 mA at 250 V AC, with a 5 mm x 20 mm body. Designed for overcurrent protection in circuits subject to temporary inrush currents, such as control transformers, solenoids, and power supplies
Time-delay cylindrical fuse rated 100 mA at 250 V AC, 5 mm x 20 mm size. Provides overcurrent protection with delayed response to tolerate temporary inrush currents. Suitable for control circuits, power supplies, and instrumentation
BUSSMANN
Time-delay cylindrical fuse rated 100 mA at 250 V AC, 5 mm x 20 mm size. Provides overcurrent protection with delayed response to tolerate temporary inrush currents. Suitable for control circuits, power supplies, and instrumentation
Time-delay midget fuse rated 12 A at 500 V AC. Non-indicating design with dimensions 13/32 in x 1 1/2 in. Provides overcurrent protection for control circuits, motor starters, and lighting systems where temporary inrush currents occur
BUSSMANN
Time-delay midget fuse rated 12 A at 500 V AC. Non-indicating design with dimensions 13/32 in x 1 1/2 in. Provides overcurrent protection for control circuits, motor starters, and lighting systems where temporary inrush currents occur
Time-delay cylindrical fuse rated 300 mA, 250 V AC, 5 mm x 20 mm size. Provides overcurrent protection with delayed response to accommodate temporary inrush currents in control panels, power supplies, and electronic equipment
BUSSMANN
Time-delay cylindrical fuse rated 300 mA, 250 V AC, 5 mm x 20 mm size. Provides overcurrent protection with delayed response to accommodate temporary inrush currents in control panels, power supplies, and electronic equipment
Class RK5 time-delay cylindrical fuse rated 9 A at 250 V AC and 125 V DC. Part of the FRN-R-ID series with indicating function for visual identification of a blown fuse. Used for overcurrent protection in motor circuits, transformers, and feeder applications
BUSSMANN
Class RK5 time-delay cylindrical fuse rated 9 A at 250 V AC and 125 V DC. Part of the FRN-R-ID series with indicating function for visual identification of a blown fuse. Used for overcurrent protection in motor circuits, transformers, and feeder applications
Time-delay cylindrical fuse rated 800 mA, 250 V AC, with non-indicating design. Dimensions: 1/4 in x 1 1/4 in. Part of MDA series, equivalent to GSA series. Used for overcurrent protection in circuits with inductive loads such as motors, transformers, and lighting
BUSSMANN
Time-delay cylindrical fuse rated 800 mA, 250 V AC, with non-indicating design. Dimensions: 1/4 in x 1 1/4 in. Part of MDA series, equivalent to GSA series. Used for overcurrent protection in circuits with inductive loads such as motors, transformers, and lighting
Time-delay cylindrical fuse from the BUSSMANN MDL series, rated 300 mA and 250 V AC. The 1/4 in x 1 1/4 in body provides overcurrent protection for circuits with inductive loads such as motors and transformers, accommodating temporary inrush currents
BUSSMANN
Time-delay cylindrical fuse from the BUSSMANN MDL series, rated 300 mA and 250 V AC. The 1/4 in x 1 1/4 in body provides overcurrent protection for circuits with inductive loads such as motors and transformers, accommodating temporary inrush currents