Technical Specifications

Key Features

Applications

• Motor control transformer supplemental protection
• Industrial AC control circuits with temporary inrush currents
• Compatible control transformer primary circuits
• Industrial electrical control panels
• Electrical equipment requiring a 5.6 A time-delay fuse
• Compatible inductive control equipment 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-5-6/10 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-5-6/10?
It is a 5.6 A, 500 VAC time-delay midget cartridge fuse from the Eaton Bussmann FNQ series, intended for supplemental overcurrent protection in compatible electrical circuits.

Who manufactures FNQ-5-6/10?
FNQ-5-6/10 belongs to the Eaton Bussmann fuse range. Its manufacturer catalog number is FNQ-5-6/10.

What is the rated current?
The rated current is 5.6 amperes, equivalent to 5600 milliamperes or five and six-tenths amperes.

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

Is FNQ-5-6/10 a fast-acting fuse?
No. FNQ-5-6/10 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?
Eaton specifies an interrupting rating of 10 kA at 500 VAC for FNQ-5-6/10, 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-5-6/10 have a blown-fuse indicator?
No. The standard FNQ-5-6/10 is a non-indicating cartridge fuse.

What materials and terminals does FNQ-5-6/10 use?
FNQ series literature describes fiber tube construction and nickel-plated brass end caps. Eaton's individual FNQ-5-6/10 product specification identifies nickel-plated bronze end caps and ferrule-to-ferrule connections. Confirm the exact end-cap alloy with Eaton if material composition is critical.

Can FNQ-5-6/10 replace an FNQ-R-5-6/10 fuse?
Do not assume these models are interchangeable. FNQ-5-6/10 is a 500 VAC supplemental fuse with a 10 kA interrupting rating, whereas FNQ-R-5-6/10 is a 600 VAC Class CC fuse with a 200 kA interrupting rating. Their protection classifications and installation requirements differ.

Can FNQ-5-6/10 be used for branch-circuit protection?
FNQ-5-6/10 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-5-6/10 model number, 5.6 A current rating, 500 VAC voltage rating, 10 kA interrupting capacity, time-delay characteristics, cartridge dimensions and fuse-holder compatibility. Consult Eaton Bussmann FNQ Technical Data 1012 for application specifications.