Littelfuse 229 Series User Manual
Axial lead & cartridge fuses, Fuse with indicating option
© 2013 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 12/19/13
Axial Lead & Cartridge Fuses
2AG > Time Lag > 229/230 Series
229/230 Series 2AG, Slo-Blo
®
Fuse with Indicating Option
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
Features
Electrical Characteristics for Series
• Available in cartridge
and axial lead form, and
a wide range of lead
forming dimension and
packaging options
• In accordance with UL
Standard 248-14
• RoHS compliant and
Lead-free
• Tripped fuse indicating
option (add suffix ‘S’ to
part number)
• Fuses are available for
board washable with
the additional sealing
process (add suffix ‘A’ to
part number)
• Sleeved fuse option
available (contact
Littelfuse for additional
information)
% of Ampere
Rating
Opening Time
100%
4 hours, Minimum
135%
1 hour, Maximum
200%
3 seconds, Minimum
20 seconds, Maximum
PS
E
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
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.
230 Series
229 Series
230 Series
Additional Information