Midget Fuses
Supplementary Overcurrent Protection
BLN Fuses
FAST-ACTING
s
250 VAC
Fiber tube, 250 volt BLN fuses provide low-
cost protection for military applications and
control circuits.
Voltage Rating:
250 Volts AC
Interrupting Rating:
10,000 amperes rms
symmetrical
Ampere Ratings:
1
2
3
4
5
6
8
10
12
15
20
25
30
Approvals:
Standard 248-14
UL Listed (File No: E10480)
CSA Certified
(File No: LR29862)
Versions available to meet
MIL-F-15160/9, QPL F09A:
Contact Factory
Dimensions:
13/32" x 1-1/2"
Example part number (series & amperage): BLN 30
BLF Fuses
FAST-ACTING
s
125/250 VAC
Laminated tube BLF fuses are the lowest
price midget fuse. They are suitable for
control circuit and instrument protection in
dry locations.
Voltage Ratings:
250 Volts AC: 1/2 – 15
amperes; 125 Volts AC: 20 – 30 amperes
Interrupting Rating:
10,000 amperes rms
symmetrical
Ampere Ratings:
⁄
2
1
1
1
⁄
2
2
2
1
⁄
2
1
3
4
5
6
6
1
⁄
4
7
8
9
10
12
15
20
25
30
Approvals:
Standard 248-14
UL Listed (File No: E10480)
CSA Certified
(File No: LR29862)
Dimensions:
13/32" x 1-1/2"
Example part number (series & amperage): BLF 5
BLS Fuses
FAST-ACTING
s
250/600 VAC
BLS fuses are 1-3/8" long in contrast to
other midget fuses which are 1-1/2". They
provide space-saving, low-cost, protection
to street lighting, metering, control and
electronic circuits.
Voltage Rating:
600 Volts AC: 2/10 – 5
amperes; 250 Volts AC: 6 – 10 amperes
Interrupting Rating:
10,000 amperes
rms symmetrical
Ampere Ratings:
⁄
10
⁄
10
1
⁄
2
3
⁄
4
8
⁄
10
2
4
1
1
1
⁄
2
1
6
⁄
10
1
8
⁄
10
2
3
4
5
6
7
8
10
Approvals:
Standard 248-14
UL Listed 1/2-5 Amps
(File No: E10480)
CSA Certified 1/2 – 5 Amps
(File No: LR29862)
Dimensions:
13/32" x 1-3/8"
Example part number (series & amperage): BLS 10
FLA Fuses
TIME-DELAY
s
125 VAC
FLA fuses are 125 volt,
pin-indicating
time-
delay fuses for protection of control circuit
transformers, solenoids, and other circuits
with high inrush currents. Metal indicating pin
“pops-out” when fuse opens. Pin gives visual
indication of open fuse. Use FLA fuses in
conjunction with special fuseblocks to operate
mechanical signal switches or energize alarm
circuits. Fuses rated 12 amperes and above
have dual-tube construction.
Voltage Rating:
125 Volts AC
Interrupting Rating:
10,000 amperes rms
symmetrical
Ampere Ratings:
⁄
10
⁄
100
2
⁄
10
1
⁄
4
3
⁄
10
4
⁄
10
1
⁄
2
6
⁄
10
8
⁄
10
1
Approvals:
1
15
1
1
⁄
8
1
1
⁄
4
1
4
⁄
10
1
1
⁄
2
1
6
⁄
10
1
8
⁄
10
2
2
1
⁄
4
2
1
⁄
2
2
8
⁄
10
3
3
2
⁄
10
3
1
⁄
2
4
4
1
⁄
2
5
5
6
⁄
10
6
6
1
⁄
4
7
8
10
12
*
15
*
20
*
25
*
30
*
Standard 248-14
UL Listed (File No: E10480)
CSA Certification Pending
Dimensions:
13/32" x 1-1/2"
*
Note: Dual tube construction
Example part number (series & amperage): FLA 15
RECOMMENDED FUSE BLOCKS
L60030M series. Refer to Fuse Block section of this catalog for additional information.
50
LITTELFUSE [ LITTELFUSE ]
