© 2015 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 01/09/15
Enclosed Fuseholders > Panel Mounted
Cartridge Fuse Holders
RoHS
Pb
Product Characteristics
Compatible
Fuses
For 3AB, 3AG, 5×20mm, or 2AG Fuses
Description
Designed to eliminate the possibility of electrical
shock, as defined in IEC standards 60127-6. The
universal fuseholder body will accept 3AB, 3AG, 5
× 20mm, and 2AG fuse sizes depending on knob
selected. Permits inventory reduction of bodies and
provides knob interchange versatility. Anti-tease feature
eliminates circuit interruption when knob is accidentally
depressed. Five fuseholder types assure design
flexibility. Available with two knob styles — screwdriver
slot or fingergrip. Available in two terminal styles
— dual-purpose for soldering or 3/16” NEMA quick
connect; and ¼” NEMA/DIN quick connect. Quick fuse
size identification is provided with letters on fingergrip
knob and color-coded screwdriver slot knobs.
Electrical
Insulation Resistance: 10,000 megohm minimum at
500 VDC. Contact Resistance: Less than .005 ohm
average at currents up to 1 ampere.
Mounting
Threaded styles withstand 15 in.-lb. mounting torque.
Low profile and High profile panel thickness: .032”
min./.310” max. Quick mount panel thickness: .012”
min./.360” max. Rear mount panel thickness: .012”
min./.260” max.
Molded Parts Body Material: Black glass-filled thermoplastic (UL
94V0).
Knob Material Grey, blue or black glass-filled thermoplastic (UL94 V-0)
Hex Nut Material: Black glass-filled thermoplastic.
Knob
Finger-Grip, Fuse Extractor type or Screwdriver Slot,
Fuse Extractor type with plated copper alloy insert.
Plated copper alloy contact clips. Spring loaded, locking
mechanism provides an anti-tease feature and will not
vibrate loose.
Terminals
Copper alloy. Tin-plated. Three styles available. A .187”
dual purpose terminal accepts wire for soldering or a
Quick-Connect receptacle. .187” terminal for NEMA
Quick-Connect and .250” terminal for NEMA/DIN
Quick-Connect available.
Ambient
Temperature –40ºC to +85ºC.
Hardware
Threaded style fuseholders are supplied with a
thermoplastic hex nut unassembled. Quick mount style
fuseholders are supplied with a push-on type retaining
nut, black oxide finish, unassembled. A synthetic rubber
“O” ring will be supplied only with the screwdriver
slot knob when the drip-proof version is requested.
To order with a metal internal tooth lockwasher (L)
and/or neoprene panel washer (N) and/or drip-proof
synthetic rubber “O” ring with Neoprene washer (NP)
[Screwdriver slot knob only], add the appropriate suffix
(L, N, or NP) respectively (or in combination) to the
catalog number.
* Please refer to Fuseology section for information on proper fuseholder re-rating.
345 Series Shock-Safe Panel Mount Enclosed Fuse Holders
Agency Approval
Agency Agency File
Number
3AG 5×20mm 2AG
E14721 20A 250V 10A 250V 10A 250V
7316 20A 250V 10A 250V 10A 250V
40001642 10A 250V 10A 250V —
Additional Information
Datasheet Samples
Resources
© 2015 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 01/09/15
Enclosed Fuseholders > Panel Mounted
Cartridge Fuse Holders
Part Numbering System
Fuse Size
2
2AG
.177" x.570"
3
3AG
.250" x 1.250"
5
5 x 20mm
.197" x.787"
EXAMPLE:
(Complete Assembly with Options)
345 3LS7LNP
Series Number
Style
LF
LowProfile Body
Black Fingergrip Knob
RF
Rear Mount Body
BlackFingergrip Knob
HS
High Profile Body
Screwdriver Slot Knob
LS
LowProfile Body
Screwdriver Slot Knob
QS
Quick Mount Body
Screwdriver Slot Knob
Screwdriver Slot Knob
2AG—Blue Knob
3AG—Grey Knob
5x20mm — Black Knob
Terminals
1
3/16"(Rt. Angle)
DualPurpose Solder/QC
2
3/16" (Straight)
DualPurpose Solder/QC
3
3/16"(Rt.Angle)
NEMA QC
4
3/16" (Straight)
NEMA QC
7
1/4"(Rt.Angle)
NEMA/DIN QC
8
1/4" (Straight)
NEMA/DIN QC
Options*
L
Lockwasher
N
Neoprene Washer
NP
Drip-Proof “O” Ring**
with Neoprene Washer
**Options(L, N, NP) can be ordered
individually or in combination.
**Screwdriverslot knobonly.
Fuse Size Fingergrip
Knob
Screwdriver Slot
Knob
2AG 3452LF1-020 3452LS1-020
3AG 3453LF1-020 3453LS1-020
5 × 20mm 3455LF1-020 3455LS1-020
To Order Knob Only:
Dimensions
F
U
S
E
F
U
S
E
F
U
S
E
F
U
S
E
.60" DIA.
.65" DIA.
.41" 1.59"
.50" MIN. 1.50" MAX.
Low Profile Fingergrip Knob
Rear Mount Fingergrip Knob
special 1/2" thread
special 1/2" thread
special 1/2" thread
special 1/2" thread
F
U
S
E
F
U
S
E
.40"
1.35"
High Profile Screwdriver Slot Knob
.04"x.25"
F
U
S
E
F
U
S
E
´
.16"
1.59"
Low Profile Screwdriver Slot Knob
.04"x.25"
F
U
S
E
F
U
S
E
.16"
1.59"
Quick Mount Screwdriver Slot Knob
.04"x.25"
Terminal Styles
Suggested Mounting Holes
Bottom Terminal
.090" x .160"
HOLE .055"
HOLE
.070"
HOLE
3/16" DUAL
PURPOSE
SOLDER/QUICK
CONNECT
1/4" NEMA/DIN
QUICK CONNECT
3/16" NEMA
QUICK CONNECT
.187" .187" .250"
.475"
.480"
.460"
.465"
.500"
.505"
A
B
C
ABC
.187" QC
.250" QC
.53" .30" .020"
.59" .36" .032"
Right Angle Straight
"Push-On" Type Retaining Nut
for Quick Mount Fuseholder
Plastic Hex Nut with Flange
.91" DIA.
.63"
.19"
.65"
DIA.
.558"
HEX.
SPECIAL
1/2" THREAD
.60" DIA.
.60" DIA.
.60" DIA.
To Order Body Including Nut(s) Only:
Terminal Style Bottom Terminal Low Profile Body
Part Number***
High Profile Body
Part Number
Rear Mount Body
Part Number
Quick Mount Body
Part Number
3/16” Dual Purpose (Rt. Angle) 3453LF1-010 3453HS1-010 3453RF1-010 3453QS1-010
3/16” Dual Purpose (Straight) 3453LF2-010 3453HS2-010 3453RF2-010 3453QS2-010
3/16” NEMA QC (Rt. Angle) 3453LF3-010 3453HS3-010 3453RF3-010 3453QS3-010
3/16”NEMA QC (Straight) 3453LF4-010 3453HS4-010 3453RF4-010 3453QS4-010
¼” NEMA/DIN QC (Rt. Angle) 3453LF7-010 3453HS7-010 3453RF7-010 3453QS7-010
¼”NEMA/DIN QC (Straight) 3453LF8-010 3453HS8-010 3453RF8-010 3453QS8-010
***Low Profile Body will accept either Fingergrip or Screwdriver Slot Knob.
