Eaton Bussmann series FRS-R fuse, 45 A, Dual, Class RK5, Non-indicating, Ferrule end x ferrule end, 10 sec at 500%, 20 kAIC at 250 Vdc|200 kAIC at 600 V, Standard, 600 V, 250 Vdc

Product Specifications

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Manufacturer / brand	Fuses & Fuse Holders
Part number	FRS-R-45-U

Core fields checked against manufacturer data. Last reviewed 08/13/2026. Always match against the label on the unit you are replacing.

FRS-R-45-U Buyer FAQ

Is FRS-R-45-U the right part for my equipment?

Confirm the complete part number and the requirements of your equipment before ordering. If you need help, contact us with the unit label and equipment details.

Can I select a replacement using the part number alone?

The part number is the best starting point, but also confirm the electrical ratings and mounting arrangement. A similar name or appearance does not establish compatibility.

What condition is FRS-R-45-U sold in?

The condition of the unit is listed beside the price. Contact JW Electrical Supply to confirm condition and availability for larger quantities.

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Before You Order

Check the full part number on the existing unit and review the equipment manufacturer's documentation before selecting a replacement. Confirm the required electrical ratings and mounting arrangement.

If you need help identifying the part, contact JW Electrical Supply with the unit label, equipment details and quantity required. A similar name or appearance does not establish compatibility.

Condition and Availability

The condition of the unit is listed beside the price. For larger quantities or questions about the unit, contact JW Electrical Supply.

Manufacturer Information

Manufacturer / brand: Fuses & Fuse Holders. Always confirm ratings against the manufacturer's data and the label on your equipment.

Fuses & Fuse Holders • FRS-R-45-U

FRS-R-45-U

Eaton Bussmann series FRS-R fuse, 45 A, Dual, Class RK5, Non-indicating, Ferrule end x ferrule end, 10 sec at 500%, 20 kAIC at 250 Vdc|200 kAIC at 600 V, Standard, 600 V, 250 Vdc

$ 20.00 20.0 USD $ 20.00

$ 20.00

each • JW to confirm

Condition: Not set — JW to confirm

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Specifications

part_number	FRS-R-45-U
manufacturer	Littelfuse
series	FRS-R
product_type	Fuse
fuse_type	Time-Delay
class	RK5
voltage_rating_ac	600V
voltage_rating_dc	300V
amperage_rating	45A
interrupting_rating	200kA AC
mounting_type	Cartridge
body_material	Fiberglass
body_style	Cylindrical
length	5.88 in
diameter	0.81 in
application	Industrial, Motor Protection, Circuits
standards	UL Listed, CSA Certified
operating_temperature_range	-55°C to +60°C
country_of_origin	USA
color	White
approvals	UL, CSA
replacement_for	Bussmann FRN-R-45
rohs_status	Compliant
availability	Stock

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