Eaton Bussmann

Bussmann FNM-2-1/4 Time-Delay Midget Fuse 2.25A 250VAC

SKU: LL1-BSM-FNM-2-1/4*1

$6.12

Available

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Bussmann FNM-2-1/4 Time-Delay Midget Fuse 2.25A 250VAC

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Eaton Bussmann

Bussmann FNM-2-1/4 Time-Delay Midget Fuse 2.25A 250VAC

SKU: LL1-BSM-FNM-2-1/4*1

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$6.12

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PRODUCT DOCUMENTATION

Product Information

Technical specifications, features, applications and purchasing information.

Technical Specifications

Brand	Bussmann (Eaton)
Model Number	FNM-2-1/4
Manufacturer Catalog Number	FNM-2-1/4
Product Category	Time-Delay Midget Fuse
Fuse Series	FNM
Current Rating	2.25 A (2-1/4 A)
AC Voltage Rating	250 VAC
Operating Characteristic	Time-Delay (Slow-Blow)
Fuse Element	Dual Element
Fuse Format	Midget Cartridge Fuse
Nominal Dimensions	13/32 x 1-1/2 in (approximately 10.3 x 38.1 mm)
Termination Style	Ferrule End Caps
Fuse Indication	Non-Indicating
Interrupting Rating at 250 VAC	100 AIC
Interrupting Rating at 125 VAC	10 kAIC
Fuse Body Material	Fiberglass
End Cap Material	Nickel-Plated Bronze
UPC	051712520218
Compliance	CE Marked; RoHS Compliant
Protection Type	Supplemental Overcurrent Protection

Key Features

2.25 A Current Rating

Provides supplemental overcurrent protection for appropriately specified electrical circuits requiring a 2.25 A time-delay fuse. The 2-1/4 designation represents two and one-quarter amperes.

250 VAC Voltage Rating

Designed for compatible AC electrical equipment and control circuits operating within the published 250 VAC maximum voltage rating.

Dual-Element Time-Delay Operation

The dual-element construction helps accommodate temporary inrush currents that may occur during energization of transformers and other inductive equipment, subject to the published time-current characteristics.

Compact Midget Cartridge Design

Features a cylindrical fuse body measuring approximately 10.3 mm in diameter and 38.1 mm in length for compatible, appropriately rated midget fuse holders.

Voltage-Dependent Interrupting Ratings

Rated for 100 A interrupting capacity at 250 VAC and 10 kA at 125 VAC. The interrupting capacity must be matched to the available fault current and actual system voltage.

Ferrule End Connections

Nickel-plated bronze ferrule terminals provide contact surfaces for compatible industrial fuse blocks, clips and holders.

Applications

Industrial control power transformer circuits
Electrical circuits with temporary inrush currents
Compatible inductive control equipment
Supplemental protection of appropriately rated motor control circuits
Industrial electrical control panels
Power electronic equipment circuits
Electrical equipment maintenance and replacement
Compatible midget fuse holders and fuse blocks

Purchase Information

We support online purchase of the Bussmann FNM-2-1/4 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 FNM-2-1/4?
It is a 2.25 A time-delay midget cartridge fuse from the Eaton Bussmann FNM series, designed for supplemental overcurrent protection.

Who manufactures FNM-2-1/4?
FNM-2-1/4 belongs to the Eaton Bussmann series. Its manufacturer catalog number is FNM-2-1/4.

What is its rated current?
The rated current is 2.25 amperes, equivalent to 2250 mA or two and one-quarter amperes.

What is the AC voltage rating?
The manufacturer specifies a maximum AC voltage rating of 250 VAC.

Is FNM-2-1/4 a fast-acting fuse?
No. It is a dual-element time-delay fuse designed to tolerate certain temporary inrush currents according to its published operating characteristics.

What is its interrupting rating at 250 VAC?
The specified interrupting rating is 100 A at 250 VAC.

What is its interrupting rating at 125 VAC?
The specified interrupting rating is 10,000 A at 125 VAC. This higher rating must not be used as the interrupting rating at 250 VAC.

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

Does FNM-2-1/4 have a blown-fuse indicator?
No. The standard FNM-2-1/4 is a non-indicating cartridge fuse.

What materials and connections does it use?
It features a fiberglass cylindrical body and nickel-plated bronze ferrule end caps for installation in compatible holders.

Can FNM-2-1/4 be used for branch-circuit protection?
The FNM series is designed for supplemental overcurrent protection. Applications requiring branch-circuit protection must use an appropriately classified protection device.

What should be verified before ordering?
Confirm the exact FNM-2-1/4 model number, 2.25 A current rating, 250 VAC voltage rating, voltage-dependent interrupting capacity, time-delay characteristics, physical dimensions and fuse-holder compatibility.

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