254 Datasheet, PDF (1/1 Pages) Littelfuse – Fuse Blocks and Clips - For NANO2 Surface Mount Fuses

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Fuse Blocks and Clips
For NANO^2® Surface Mount Fuses
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OMNI-BLOK^® Fuse Block Molded Base Type
®
®
This low profile Omni-Blok^® Fuse Block design is available with a
choice of solder type terminals, Q.C. terminals or P.C. board mountable
terminals. The PCB design is offered with either tin-plated brass termi-
nals for normal applications or tin-plated beryllium copper terminals for
use in caustic environments. These fuse blocks feature individual barriers
which reinforce the fuse clips while providing greater protection against
clip damage and electrical shock. The unique design permits self-
alignment of clips to fuse cap. This, plus a one-piece clip/terminal
assures low contact resistance. Multiple pole units may be broken
apart to obtain desired number of poles.
APPROVALS: Recognized under the Components Program of
Underwriters Laboratories and Certified by CSA.
SPECIFICATIONS:
Electrical: Solder Type — 10A, 300V.
Q.C. Type — 10A, 300V.
PCB Type — 10A, 300V.
Dielectric Strength: 1500V., Minimum.
Clip/Terminals: Tin-Plated Spring Brass, except pn 254121 is
Tin-Plated Beryllium Copper.
Base: Black Thermoplastic, glass reinforced with UL 94V0
flammability rating.
Ambient Temperature: – 40°C to +85°C.
OPTIONS:
1. Other colors available on special order. Contact factory.
2. Two different style clips can be supplied for circuit identity or
polarization. Contact factory.
PATENTED
ORDERING INFORMATION:
Catalog Number
Solder Type
Terminals
254 001
254 002
254 003
254 004
254 005
254 006
254 007
254 008
NEMA Style
.110" Q.C. Terminals
254 201
254 202
254 203
254 204
254 205
254 206
254 207
254 208
P.C.
Board Mount
254 101
254 121
Number
of Poles
1
2
3
4
5
6
7
8
Number
of Poles
1
2
3
4
5
6
7
8
Number
of Poles
1
1
Overall
Width (B)
0.35"
0.80"
1.25"
1.70"
2.15"
2.60"
3.05"
3.50"
Typical
Overall
Width (B)
0.35"
0.80"
1.25"
1.70"
2.15"
2.60"
3.05"
3.50"
Typical
Overall
Width (B)
0.35"
0.35"
Typical
Clip/
Terminals
Brass
Brass
Brass
Brass
Brass
Brass
Brass
Brass
Clip/
Terminals
Brass
Brass
Brass
Brass
Brass
Brass
Brass
Brass
Clip/
Terminals
Brass
Beryllium Copper
Solder & Q.C. Types:
.35" typ.
.50" typ.
.110" typ.
.190" x .187" deep
C bore with .050"
material remaining
.090" REF. DIA. Thru
.450"
centers typ.
B
.016"
REF.
P.C. Board Mount Type:
1.22"
REF.
.70"
REF.
.70" typ.
Solder type terminals
feature elongated
hole on clip
45
.53"
REF.
.24" REF.
.35"
REF.
.50"
REF.
With 2AG
fuse installed
.81"
REF.
.730"
±.005"
Recommended Hole Pattern
.04"
REF.
.19"
REF.
.050"
.055"
DIA. HOLES
(2 LOCATIONS)
348
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