Littelfuse 445ATO User Manual

For ATO®Fuses In-Line Type

SPECIFICATIONS:
Electrical:

Intended for use with 32 volts Autofuse®fuses rated to 20 or

30 amperes depending on wire size and terminal combinations.

Mounting: Capable of snap-mounting to panel from rear.Fuseholders

interlock for multiple mounting.

Molded Parts: Black Ther moplastic (UL 94V2).
Terminals: Brass. Tin-plated. Snap-lock into body.
Ambient Temperature: –40°C to +85°C.
Wire: Stranded with PVC insulation, black #14 AWG for 155 300 Series

and orange #10 AWG for 155 400 Series.

PATENTED
ORDERING INFORMATION:

Catalog Number

Assembled with Assembled with Fuse

8" Wire Loop, 8" Wire Loop Amperage

Unassembled No Fuse and Fuse Rating

155 320U 155 300 155 303A 3

(Ter minals designed (#14 wire/ 155 304A 4
for #14 AWG terminals rated 155 305A 5
stranded wire and to 20A). 155 37.5A 7.5
marked “14”). 155 310A 10

155 315A 15
155 320A 20

155 430U 155 400 155 425A 25

(Ter minals designed (#10 wire/ 155 430A 30
for #10 AWG terminals rated
stranded wire and to 30A).
marked “10”).

UNASSEMBLED

For MINI®Fuses In-Line Type — Easy Crimp Fuseholder

SPECIFICATIONS:
Terminals:

Copper Alloy/Tin plated.

Body: Black Thermoplastic.
Operating Temperature: –40°C to +105°C.

Use standard crimping tool and crimp the matted area to secure wire.
(Possible crimp tool - Ideal #30-428 [Toothed Die slot] or equivalent).

ORDERING INFORMATION:

For AT O®Fuses P.C. Board Mount Type

SPECIFICATIONS:
Electrical:

Intended for use with 32 volts ATO®fuses rated to 15

amperes.

Molded Parts: Black Thermoplastic
Terminals: Copper Alloy, Tin Plated
Ambient Temperature: –40°C to +85°C.
ORDERING INFORMATION:

Catalog Number:

04450715

Catalog
Number Description

153 002 20A Max. Rating — Terminals will accept #16–22 AWG (1.0-

.33 mm2) stranded wire (use appropriate wire size based on
fuse usage). For example — Use #16 AWG wire for 20A fuse.

153 003 30A Max. Rating — Ter minals will accept #10–14 AWG (5.0-

2.0 mm2) stranded wire (use appropriate wire size based on
fuse usage). For example — Use #10 AWG wire for 30A fuse.

Tool For Fuse Removal or Replacement; Part No. 097024.

* Please refer to Fuseology section for information on proper fuseholder de-rating.

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www.littelfuse.com

13

FUSEHOLDERS

Fuseholders

Special Types

Typical Multiple Mounting
(Fuseholders interlocked)

10.16
(.40")

Recommended Panel Mounting Hole
(.04" / .078" thick panel)

37.08

(1.46")

30.48 (1.20")

Add .400" to width for each additional fuseholder

24.64

(.970")

19.05 (.75")

.254 (.01") R. Max.

10.54 (.415")

10.41 (.410")

27.94 (1.10")

26.92 (1.06")

11.43
(.45")

END VIEW

(CRIMP) AREA

17.02 (.67")

MATTED

17.02
(.67")

52.58

(2.07") Max

SIDE VIEW

4.5

(.177") Ref.

21.8

(.858")

9.3

(.366")

6.35 (.25")

(.098")

22

(.866")

2.5

9.3

(.366")

9

(.354")