Eaton Bussmann

Bussmann FNQ-3-1/2 Time-Delay Midget Fuse 3.5A 500VAC

SKU: LL1-BSM-FNQ-3-1/2*1

$6.98

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Bussmann FNQ-3-1/2 Time-Delay Midget Fuse 3.5A 500VAC

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Eaton Bussmann

Bussmann FNQ-3-1/2 Time-Delay Midget Fuse 3.5A 500VAC

SKU: LL1-BSM-FNQ-3-1/2*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-3-1/2
Manufacturer Catalog Number	FNQ-3-1/2
Product Category	Time-Delay Midget Fuse
Fuse Series	FNQ
Current Rating	3.5 A (3500 mA)
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)

Key Features

3.5 A Current Rating

Rated at 3.5 amperes, the FNQ-3-1/2 provides supplemental overcurrent protection for appropriately specified industrial control and equipment circuits.

500 VAC Voltage Rating

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

Time-Delay Operation

Its time-delay characteristics help accommodate temporary inrush currents associated with motor control transformers and compatible inductive loads, subject to the manufacturer's published time-current curves.

10 kA Interrupting Rating

Provides a published interrupting rating of 10,000 amperes at 500 VAC. The available short-circuit current at the installation must not exceed the applicable interrupting capacity.

Compact Midget Cartridge Design

Uses a nominal 10.3 mm diameter and 38.1 mm length cartridge format for installation in appropriately rated and dimensionally compatible midget fuse holders and fuse blocks.

Industrial Fuse Construction

Features non-indicating operation, fiber tube construction and ferrule connections. Eaton's individual FNQ-3-1/2 product specification identifies nickel-plated bronze end caps.

Applications

Motor control transformer supplemental protection
Industrial AC control circuits with temporary inrush currents
Compatible transformer primary protection circuits
Industrial electrical control panels
Electrical equipment requiring a 3.5 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-3-1/2 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-3-1/2?
It is a 3.5 A, 500 VAC time-delay midget cartridge fuse from the Eaton Bussmann FNQ series, intended for supplemental overcurrent protection.

Who manufactures FNQ-3-1/2?
FNQ-3-1/2 belongs to the Eaton Bussmann fuse range. Its manufacturer catalog number is FNQ-3-1/2.

What is the rated current?
The rated current is 3.5 amperes, equivalent to 3500 milliamperes or three and one-half amperes.

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

Is FNQ-3-1/2 a fast-acting fuse?
No. It is a time-delay fuse intended for compatible circuits where temporary inrush currents may occur. Check the manufacturer's time-current characteristics to determine application suitability.

What is the interrupting rating at 500 VAC?
Eaton specifies an interrupting rating of 10 kA at 500 VAC for FNQ-3-1/2, 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-3-1/2 have a blown-fuse indicator?
No. FNQ-3-1/2 is a non-indicating cartridge fuse.

What materials are used in this fuse?
FNQ series technical literature describes fiber tube construction and nickel-plated brass end caps. Eaton's individual FNQ-3-1/2 product specification identifies nickel-plated bronze end caps. Confirm the exact end-cap alloy with Eaton if material composition is critical.

Can FNQ-3-1/2 replace an FNQ-R fuse with the same current rating?
Do not assume the two series are interchangeable. FNQ is a 500 VAC supplemental fuse series, whereas FNQ-R is a 600 VAC Class CC fuse series with different protection classifications, interrupting ratings and installation requirements.

Can FNQ-3-1/2 be used for branch-circuit protection?
FNQ-3-1/2 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-3-1/2 model number, 3.5 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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