Fuse Holders Datasheet
345 Series
Shock-Safe Panel Mount Enclosed Fuse Holders
RoHS Pb
Product Characteristics
High Profile Body
Screwdriver Slot Knob
Rear Mount Body
Finger Grip Knob
Compatible
Fuses
For 3AB, 3AG, 5×20mm, or 2AG Fuses
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.
Insulation Resistance: 10,000 megohm minimum
at 500 VDC. Contact Resistance: Less than .005
ohm average at currents up to 1 ampere.
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.
Description
Low Profile Body
Screwdriver Slot Knob
Quick Mount Body
Screwdriver Slot Knob
Electrical
Mounting
Low Profile Body
Finger Grip Knob
Finger Grip Knob
Body Material: Black glass-filled thermoplastic
(UL 94V0).
Grey, blue or black glass-filled thermoplastic
(UL94 V-0) Hex Nut Material: Black glass-filled
thermoplastic.
Molded Parts
Knob Material
Nut
Retaining Nut
Screwdriver Slot
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.
Knob
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.
Notes:
Terminals
* Pictures taken without fuse installed, level of screwdriver knob will look different, with fuse installed.
* High profile and low profile body include 1 nut
* Rear mount body include 2 nuts.
* Quick connect body include 1 retaining nut.
Ambient
Temperature
–40ºC to +85ºC.
Additional Information
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. Accesories can be order by separately.
IP40 : Protected from solid objects greater than 1
millimeter.
Hardware
Resources
Accessories
Samples
Agency Approval
Agency Agency File Number
3AG/AB
5×20mm
2AG
E14721
7316
20A 250V 20A 250V 10A 250V
20A 250V 20A 250V 10A 250V
Not protected from liquids.
IP52: Protected against dust and dripping water
when tilted
Ingress
Protection
40001642
10A 250V 10A 250V
—
up to 15º. Parts ending with “NP”.
* Please refer to Fuseology section for information on proper fuseholder re-rating.
© 2023 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: GD. 03/20/23
1
