PS Magazine - TB 43-PS-437
PS, The Preventative Maintenance Monthly
ISSUE 437
APRIL 1989
ID of Fuse
If you're not sure which size replacemenT Fse your equipMent needs, eye the
±². ³f The in´'s noT there, send in a DD
1348-6,
Exception Data ReqUest, to
yOur suPpLy µLks¶ Be sure To incLude the current and voltage ratings and any
oTher inf· you have abo¸t the fuse, including The equipmenT it's used in¶
While you're waiting, never use a piece of wire or ´il in place of a fuse¶
SucH a substitute gives your eQuipment no protection at aLl¶
l
Say thE ±U²E yOU arE hOlding
ha³ thi² cOmbiNatiOn O± lEttEr²
and nUmbEr²:
F01
A
25±V
1/2A
S
or
F0² A25±V²/2AS
±he
F0²
is the style
code which tells you The
¹-º»¼½¾¿À
±he
25³V
LeTs
you
know the volTage capaÁ
city of The Âuse.
Fse size and type.
A
is ´r bLow time. Ãn
this instance, the blow
tiMe is noÄal interruptÅ
ing capacity.
Ãf the Letter is B, tHere
is a blow time Lag or slow
bLow.
And, if The LetTer is
C±
the blow Time is ÆÇst or
very
high
inteÈrUpTing
capÉciTyÊ
²³
voltage
rating
Current
rating
Coating
±he
1/2A
is the amperÅ
age rating¶ ³T sËows the
Maximum
amount
of
constanT current ThÌ Âuse
will caÍy wiThouT blowÅ
ing.
S
Tells yoU the ferrULes
are silverÎcoaTed. No S,
no siLverÊ
aPR ´9
STyLe
code
´y
p
f±1
caRridge
f±2
caRridge
F±3
cµRridge
F±5
caRridge
F±6
caRridge
F±7
¶µRridge
f±9
caRridge
f15
caRridge
F16
CaRridge
f19
Kni·e blade
F2±
Kni·e bLµde
F21
Kni·e bLµde
f22
KNi·e blade
f27
cµRridge
F28
CaRridge
F29
CµRridge
F3±
CaRridge
F37
¸iNk
F38
¸iNk
F39
¸ink
F4±
¸ink
F5±
¸ink
F51
Indi¹atoº aLarm
F6±
cµRridge
F61
cµRridge
F62
cµRridge
F7±
CaRridge
aPR ´9
Size(iN¹hes)
1 x.»5
1.25x.25
1.1»5x .25
1.25±x±.281
1.2¼± x ±.28²
1.5x .4±6
².5x.4±6
2.±x.562
3.±x.812
5.875x 1.312
7.125x1.875
8.6»5 x 2.½±6
1±.375x2.9³6
3.±x.4±6
½.5x.4±6
5.±x.812
1±.±x.812
2.5x.562
3.±x.812
3.5x1.±62
1.75x 1.3²2
1.4±6x.4±6
².672x.4±6
1¾2x.4±6
2¿±x±¿562
3.±x±¾812
2¿313 x ±¿½37
(˵lUes less
Thµn5A )
2.313x±.687
(ÀalUeÁ o·
5A&more)
Fuse PM
Ïfter you have the rigËt Fse you want
it to stay on the job f·r a long time.
Ðake sUre the eqUipment circUit is
ofÑ bef·re you pUt in the ÂUse¶ Slipping
a Fse into a Live circUit couLd create
an arc between the fuse and The FseÅ
hoLder¶ ±his bUÒs the fÓrrULes or termiÅ
naLs which wiLL liMiT good contact and
increase the resistance. You can aLso
get a shocK and transient eLecTriciTy can
damage the equipMent.
Whenever a termiÔaL gets piTted or
dirty, shine it Up with an eMery cloth¶
KeeP terminµLs
¹leµn anD ¹LiPs tight
Õeep the ÂUsehoLder cliÖs tight. ±he
clips shoUld have a firm hold on the
Fse. Squeeze Loose cLiPs together¶ ³f
they stiLl don't have a firM grip on the
×rrules, get the cLips repLaced¶
² 7
r'i
E
.
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