Littelfuse 345_b_k Series - Manual

© 2013 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 12/19/13
Enclosed Fuseholders > Panel Mounted
Cartridge Fuse Holders
Product Characteristics
Compatible
Fuses
For 3AG, 5×20mm, or 2AG Fuses
Description
Designed to eliminate the possibility of electrical
shock, as defined in IEC standards 60065 and 60127.
The universal fuseholder body will accept 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.
Agency Approval
Agency Agency File
Number 3AG 5×20mm 2AG
E75961 20A 250V 10A 250V 10A 250V
LR91788 20A 250V 10A 250V 10A 250V
116895E 10A 250V 10A 250V —
* Please refer to Fuseology section for information on proper fuseholder de-rating.
345 Series Shock-Safe Panel Mount Enclosed Fuse Holders
Additional Information
Datasheet Samples Resources