Littelfuse 229 User Manual
Axial Lead & Cartridge Fuses
2AG > Time Lag > 229/230 Series
229/230 Series 2AG, Slo-Blo® Fuse with Indicating Option
Description
Littelfuse 229/230 series Slo-Blo® Fuses are available in
2AG size cartridge or axial lead form, offer tripped fuse
indicating option, and offer features designed to meet
rigorous Telecom industry requirements.
229/230 series product ordered with the tripped fuse
indicating option show discoloration of the glass body
immediately after trip. They offer the same performance
characteristics as standard product, and help to reduce
time locating the tripped fuse and troubleshooting circuit
issues.
The 229/230 series 0.25A - 1.25A range combines
Agency Approvals
Agency Agency File Number Ampere Range
E10480 250mA - 3.5A
LR 29862 250mA - 7A
E10480 4A - 7A
PS
E
NBK200405 - E10480C/D
NBK110512 - E10480A/B
NBK210405 - E10480E/F
1A - 3.5A
4A - 5A
6A - 7A
250mA - 7A
Electrical Characteristics for Series
% of Ampere
Rating
100% 4 hours, Minimum
135% 1 hour, Maximum
200%
Opening Time
3 seconds, Minimum
20 seconds, Maximum
conventional overcurrent protection with ability to
withstand high current, short duration pulses which
complies to short circuit requirements of UL 1459
for telephone equipment. Insulating sleeve option is
also available. Please refer to the Surge Withstand
Specifications section of this document for additional
information.
Features
• Availableincartridge
and axial lead form, and
a wide range of lead
forming dimension and
packaging options
• InaccordancewithUL
Standard 248-14
• RoHScompliantand
Lead-free
• Trippedfuseindicating
option (add suffix ‘S’ to
part number)
Additional Information
PS
E
• Fusesareavailablefor
board washable with
the additional sealing
process (add suffix ‘A’ to
part number)
• Sleevedfuseoption
available (contact
Littelfuse for additional
information)
© 2013 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 12/19/13
Datasheet
229 Series
Datasheet
230 Series
Resources
229 Series
Resources
230 Series
Samples
229 Series
Samples
230 Series
Axial Lead & Cartridge Fuses
2AG > Time Lag > 229/230 Series
Electrical Characteristic Specification by Item
Ampere
Amp
Code
Rating
.250 0.25 250
.350 0.35 250 1.3100 0.490 x x x
.375 0.375 250 1.1685 0.580 x x x
.500 0.5 250 0.6935 1. 16 x x x
.600 0.6 250 0.4805 1.75 x x x
.750 0.75 250 0.3430 2.95 x x x
.800 0.8 250 0.3060 3.45 x x x
0 01. 1 250 0.2120 5.64 x x x x
1.25 1.25 250
01. 5 1. 5 250 0.1077 15.0 x x x x
002. 2 250 0.0698 30.0 x x x x
2.25 2.25 250 0.0567 39.0 x x x x
02.5 2.5 250 0.0502 50.0 x x x x
003. 3 250 0.0383 77.0 x x x x
03.5 3.5 250
004. 4 125
005. 5 125 0.0186 267 x x x x
006. 6 125 0.0141 380 x x x x
007. 7 125 0.0116 464 x x x x
(A)
Voltage
Rating
(V)
Interrupting
Rating
35A@250Vac
10KA@125Vac
10KA@125Vdc
80A@310Vac
100A@250Vac
10KA@125Vac
10KA@125Vdc
80A@310Vac
100A@250Vac
10KA@125Vac
10KA@125Vdc
400A@125Vac
400A@125Vdc
Nominal Cold
Resistance
(Ohms)
2.4300 0.216 x x x
0.1460 9.80 x x x x
0.0312 110.0 x x x x
0.0258 148.0 x x x x
Nominal
Melting
2
t (A2 sec)
I
Agency Approvals
PS
E
Surge Withstand Specificatons
Peak Withstand Current(lp): These fuses will withstand 50 repetitions of a double exponential impulse wave having peak
currents(lp) and peak voltages as listed.
Amp Code
Ampere Rating
.250 0.25
(A)
Interrupting
Rating
Nominal Cold
Resistance
(Ohms)
2.4300 0.216 23.0A 16.6A 12.4A
Nominal
Melting
2
t (A2 sec)
I
10×160 µs
1500V
10×560 µs
800V
10×1000 µs
1000V
.350 0.35 1.3100 0.490 34.0A 25.8A 19.3A
.375 0.375 1.1685 0.580 40.0A 25.4A 19.0A
.500 0.5 0.6935 1.16 60.0A 37.7A 28.2A
.600 0.6 0.4805 1.75 71.0A 47.2A 35.3A
.750 0.75 0.3430 2.95 91.0A 65.5A 49.0A
.800 0.8 0.3060 3.45 104.0A 68.9A 51.6A
60A@600Vac
40A@600Vac
7A@600Vac
2.2A@600Vac
0 01. 1 0.2120 5.64 130A 88.6A 66.3A
1.25 1.25* 0.1460 9.80 162.0A 118.1A 100.0A
* 500A peak, 2500V, 2×10 microseconds, 20 repetitions
Specifications are subject to change without notice.
© 2013 Littelfuse, Inc.
Revised: 12/19/13
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