Eaton Bussmann

Bussmann FNQ-7 Time-Delay Midget Fuse 7A 500VAC

SKU: LL1-BSM-FNQ-7*1

$6.98

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Bussmann FNQ-7 Time-Delay Midget Fuse 7A 500VAC

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Eaton Bussmann

Bussmann FNQ-7 Time-Delay Midget Fuse 7A 500VAC

SKU: LL1-BSM-FNQ-7*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-7
Manufacturer Catalog Number	FNQ-7
Product Category	Time-Delay Midget Fuse
Fuse Series	FNQ
Current Rating	7 A
AC Voltage Rating	500 VAC
Operating Characteristic	Time-Delay (Slow-Blow)
Fuse Format	Midget Cartridge Fuse (5AG)
Nominal Dimensions	10.3 x 38.1 mm (13/32 x 1-1/2 in)
Mounting Type	Requires Compatible Fuse Holder
Termination Style	Ferrule End x Ferrule End
Fuse Indication	Non-Indicating
Interrupting Rating at 500 VAC	10 kAIC (10,000 A)
End Cap Material	Nickel-Plated Bronze (Product Specification)
End Cap Feature	Nickel-Plated Brass End Caps (Series Literature)
Fuse Color Code	Orange
UPC	051712786072
UL Approval	UL Listed, UL 248-14, File E19180
CSA Approval	CSA Certified, C22.2 No. 248.14, Class 1422-01, File 53787
Compliance	CE Marked; RoHS Compliant
Protection Type	Supplemental Overcurrent Protection
Manufacturer Reference	Eaton Bussmann FNQ Technical Data 1012

Key Features

7 A Current Rating

Rated at 7 amperes, the FNQ-7 provides supplemental overcurrent protection for appropriately specified industrial electrical control circuits, motor control transformers and compatible equipment.

500 VAC Voltage Rating

Designed for compatible AC electrical circuits operating at or below the published maximum voltage rating of 500 VAC, including suitably rated control transformer applications.

Time-Delay Operation

Its time-delay characteristics help accommodate temporary inrush currents associated with motor control transformers and other compatible inductive loads. Fuse selection should follow the manufacturer's published time-current curves.

10 kA Interrupting Rating

Features a specified interrupting rating of 10,000 amperes at 500 VAC. The available short-circuit current at the installation must not exceed the fuse's applicable interrupting capacity.

Compact Midget Fuse Design

Uses a 5AG midget cartridge format measuring approximately 10.3 mm in diameter and 38.1 mm in length for installation in compatible, appropriately rated fuse holders and blocks.

Non-Indicating Ferrule Construction

Features a non-indicating cylindrical cartridge with ferrule end connections. Product specifications identify nickel-plated bronze end caps, while FNQ series literature also describes nickel-plated brass end caps.

Applications

Motor control transformer supplemental protection
Industrial AC control circuits with temporary inrush currents
Compatible transformer primary protection circuits
Industrial machinery electrical control panels
Electrical equipment requiring a 7 A time-delay fuse
Compatible inductive electrical control circuits
Compatible DIN-rail midget fuse holders and fuse blocks
Industrial equipment maintenance and specified fuse replacement

Purchase Information

We support online purchase of the Bussmann FNQ-7 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-7?
It is a 7 A, 500 VAC time-delay midget cartridge fuse from the Eaton Bussmann FNQ series, intended for supplemental overcurrent protection in compatible industrial circuits.

Who manufactures FNQ-7?
FNQ-7 belongs to the Eaton Bussmann fuse range. Its manufacturer catalog number is FNQ-7.

What is the rated current?
The rated current is 7 amperes, equivalent to 7000 milliamperes.

What is the AC voltage rating?
The published maximum AC voltage rating is 500 VAC. The circuit voltage must remain within the fuse's applicable voltage rating.

Is FNQ-7 a fast-acting fuse?
No. FNQ-7 is a time-delay fuse designed for compatible circuits where temporary inrush currents may occur. Its suitability should be evaluated using the manufacturer's published time-current characteristics.

What is the interrupting rating at 500 VAC?
The specified interrupting rating is 10 kA at 500 VAC, 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-7 have a blown-fuse indicator?
No. The standard FNQ-7 is a non-indicating cartridge fuse.

What materials and terminals does FNQ-7 use?
FNQ-7 has ferrule-to-ferrule connections. Its product specification identifies nickel-plated bronze end caps, while series literature references nickel-plated brass end caps. Confirm the precise end-cap material with Eaton if required.

Can FNQ-7 replace an FNQ-R-7 fuse?
Do not assume the two models are interchangeable. FNQ-7 is a 500 VAC supplemental fuse with a 10 kA interrupting rating, whereas FNQ-R-7 belongs to the 600 VAC Class CC series with different protection classifications and installation requirements.

Can FNQ-7 be used for branch-circuit protection?
FNQ-7 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-7 model number, 7 A current rating, 500 VAC voltage rating, 10 kA interrupting rating, time-delay characteristics, cartridge dimensions and fuse-holder compatibility. Consult Eaton Bussmann FNQ Technical Data 1012 for application specifications.

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