Cartridge Fuse Holders

© 2019 Littelfuse, Inc.

Specifications are subject to change without notice.

Revised: 05/20/19

Enclosed Fuseholders > Panel Mounted

RoHS

Pb

Product Characteristics

Dimensions

Compatible Fuses

For 3AB/3AG Type Fuses

Features

Low profile design

Blown fuse indicator

Electrical

348 Series: Rated at 15 amps for any voltage up to

250 volts.

344 Series: Rated at 15 amps at lamp voltage shown

below.

Dielectric Strength

1500 volts minimum. When designing indicating

type fuseholders into a circuit, consideration should

be given to the resistance of fractional amperage

fuses and the parallel resistance of the indicator

lamp and its resistor.

Mounting

Panel thickness range: .031” through .125”.

Molded Parts

Black thermoplastic body (UL94 V-0). Thermoplastic

bezel, cap and lens (UL94 V-2). See tables below for

colors.

Terminals

Brass. Tin-plated.

Ambient

Temperature

Non-indicating: –40ºC to +85ºC.

Indicating: –40ºC to +60ºC.

Fuse Installation

Insert the fuse into the cap and push the assembly

into the body until it latches. Press in and down to

unlatch for removal.

NOTE: Refer to Fuseology for information on proper fuseholder re-rating.

Ordering Information

Catalog Number

Lamp

Type

Lamp

Voltage

Lamp

Current

Resistor

Lens

Color

3/16” Q.C.

Terminals

1/4” Q.C.

Terminals

03440601Z 03440801Z Incande-scent

6

40 ma

No

Amber

03440602Z 03440802Z Incande-scent

14

80 ma

No

Amber

03440603Z 03440803Z Incande-scent

28

40 ma

No

Amber

03440604Z 03440804Z

Neon

120

1.2 ma

Yes

Clear

03440605Z 03440805Z

Neon

240

.3 ma

Yes

Clear

NOTE:

Standard Body and Bezel color is black. Other Bezel colors may be available as special order.

Please contact Littelfuse for additional information and detailed arrangements.

Side

Front

Top

344 Series

.85"

1.95"

(WITH FUSE

ASSEMBLED)

.53"

.4"

.87"

.42"

.054" DIA.

344 800 SERIES

.250" X .032"

344 600 SERIES

.187" X .020"

NEMA Q.C.

.054" DIA.

FUSE

PRESS

.85"

1.95"

(WITH FUSE

ASSEMBLED)

Side

Front

Top

.28"

.4"

.87"

.42"

.054" DIA.

348 800 SERIES

.250" X .032"

348 600 SERIES

.187" X .020"

NEMA Q.C.

.054" DIA.

348 Series

Lens/Cap Bezel Body

Cap Bezel Body

Recommended

mounting hole

.625

Sq.

Note: Standard Body and Bezel color is black. Other Bezel colors are available as special order.

348 Series (Low Profile)

344 Series (Indicating)

344/348 Series Blown Fuse Indicating / Low Profile Holders for 3AB/3AG Fuses

Catalog Number

Bezel Color

Cap Color

3/16” Q.C.

Terminals

1/4” Q.C.

Terminals

03480671Z

03480871Z

Black

Red

03480677Z

03480877Z

Black

Black

NOTE:

Standard Body and Bezel color is black. Other Bezel and Cap colors may be available as special order.

Please contact Littelfuse for additional information and arrangments.

Additional Information

Datasheet

Samples

Resources

Datasheet

Samples

Resources

344 Series

348 Series

344 Series

348 Series

344 Series

348 Series

Specifications are subject to change without notice. Application testing is strongly recommended.

Disclaimer Notice - Information furnished is believed to be accurate and reliable. However, users should independently evaluate the

suitability of and test each product selected for their own applications. Littelfuse products are not designed for, and may not be used in, all

applications. Read complete Disclaimer Notice at: www.littelfuse.com/disclaimer-electronics.