Eaton Bussmann

Bussmann FNQ-3/10 Time-Delay Midget Fuse 300mA 500VAC

SKU: LL1-BSM-FNQ-3/10*1

$6.98

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Bussmann FNQ-3/10 Time-Delay Midget Fuse 300mA 500VAC

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Eaton Bussmann

Bussmann FNQ-3/10 Time-Delay Midget Fuse 300mA 500VAC

SKU: LL1-BSM-FNQ-3/10*1

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$6.98

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PRODUCT DOCUMENTATION

Product Information

Technical specifications, features, applications and purchasing information.

Technical Specifications

Brand	Bussmann (Eaton)
Model Number	FNQ-3/10
Manufacturer Catalog Number	FNQ-3/10
Product Category	Time-Delay Midget Fuse
Fuse Series	FNQ
Current Rating	0.3 A (300 mA)
AC Voltage Rating	500 VAC
Operating Characteristic	Time-Delay (Slow-Blow)
Fuse Format	Midget Cartridge Fuse
Nominal Dimensions	10.3 x 38.1 mm (13/32 x 1-1/2 in)
Mounting Type	Compatible Fuse Holder or Fuse Block
Termination Style	Ferrule End Caps
Fuse Indication	Non-Indicating
Interrupting Rating at 500 VAC	10 kAIC (10,000 A)
Fuse Body Construction	Fiber Tube (FNQ Series)
End Cap Material	Nickel-Plated Bronze (Eaton Product Specification)
Series Color Code	Orange (500 VAC Maximum)
UPC	051712786089
UL Approval	UL Listed, UL 248-14, File E19180
CSA Approval	CSA Certified, C22.2 No. 248.14, File 53787
Compliance	CE Marked; RoHS Compliant
Protection Type	Supplemental Overcurrent Protection
Manufacturer Reference	Eaton Bussmann FNQ Technical Data 1012

Key Features

300 mA Current Rating

Rated at 0.3 A (300 mA), the FNQ-3/10 provides supplemental overcurrent protection for appropriately specified low-current industrial control circuits.

500 VAC Voltage Rating

Designed for compatible AC control and equipment circuits operating at or below its published 500 VAC maximum voltage rating. The FNQ series uses an orange voltage-class color code.

Time-Delay Operation

Helps accommodate temporary inrush currents associated with motor control transformers and other compatible inductive equipment, subject to the manufacturer's published time-current characteristics.

10 kA Interrupting Rating

Provides a manufacturer-specified interrupting rating of 10,000 A at 500 VAC. The available fault current must not exceed the applicable interrupting capacity.

Compact Midget Fuse Design

Features a nominal diameter of 10.3 mm and length of 38.1 mm for installation in dimensionally compatible and appropriately rated midget fuse holders.

Industrial Cartridge Construction

Combines FNQ series fiber tube construction with ferrule end-cap connections. Eaton's FNQ-3/10 product specification identifies nickel-plated bronze end caps.

Applications

Motor control transformer supplemental protection
Industrial AC control circuits with temporary inrush currents
Compatible low-current transformer primary circuits
Industrial electrical control panels
Electrical equipment requiring a 300 mA time-delay fuse
Industrial automation control circuit maintenance
Compatible DIN-rail midget fuse holders and blocks
Equipment servicing and specified fuse replacement

Purchase Information

We support online purchase of the Bussmann FNQ-3/10 Time-Delay Midget Fuse. If you need to make bulk purchases and inquire about other products, please contact our team to inform us of your purchase requirements. We will provide you with information such as quantity quotations, delivery dates, and transportation methods.

Frequently Asked Questions

What is the Bussmann FNQ-3/10?
It is a 300 mA, 500 VAC time-delay midget cartridge fuse from the Eaton Bussmann FNQ series, intended for supplemental overcurrent protection.

Who manufactures FNQ-3/10?
FNQ-3/10 is part of the Eaton Bussmann fuse range. Its manufacturer catalog number is FNQ-3/10.

What is the rated current?
The rated current is 0.3 amperes, equivalent to 300 milliamperes or three-tenths of an ampere.

What is the AC voltage rating?
The maximum published AC voltage rating is 500 VAC. The FNQ series uses orange as its voltage-class color code.

Is FNQ-3/10 a fast-acting fuse?
No. FNQ-3/10 is a time-delay fuse intended for circuits where temporary inrush currents may occur. Suitability should be evaluated using the manufacturer's time-current characteristics.

What is the interrupting rating at 500 VAC?
Eaton specifies a 10 kA interrupting rating at 500 VAC for FNQ-3/10, equivalent to 10,000 amperes.

What are the physical dimensions?
The nominal dimensions are 10.3 mm in diameter and 38.1 mm in length, approximately 13/32 inch by 1-1/2 inches.

Does FNQ-3/10 have a blown-fuse indicator?
No. The standard FNQ-3/10 is a non-indicating cartridge fuse.

What materials are used in this fuse?
FNQ Technical Data 1012 identifies fiber tube construction and nickel-plated brass end caps for the series. The Eaton FNQ-3/10 product listing specifies nickel-plated bronze end caps; refer to the manufacturer for material clarification where necessary.

Can FNQ-3/10 replace an FNQ-R-3/10 fuse?
Do not assume these models are interchangeable. FNQ is a 500 VAC supplemental fuse series, whereas FNQ-R is a 600 VAC Class CC fuse series with different protection characteristics and interrupting ratings.

Can FNQ-3/10 be used for branch-circuit protection?
FNQ-3/10 is intended for supplemental overcurrent protection. Applications requiring branch-circuit protection must use an appropriately classified protective device with a suitable interrupting rating.

What should be verified before ordering?
Confirm the exact FNQ-3/10 model number, 300 mA current rating, 500 VAC voltage rating, 10 kA interrupting capacity, time-delay characteristics, dimensions and fuse-holder compatibility. Consult Eaton Bussmann Technical Data 1012 for series specifications.

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