Littelfuse 452 Series - Manual

© 2014 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 01/17/14
Surface Mount Fuses
NANO 2® > Slo-Blo ® > 452/454 Series
452/454 Series Fuse
Description
The NANO 2 Slo-Blo ® fuse has enhanced inrush withstand
characteristics over the NANO 2 Fast-Acting fuse. The
unique time delay feature of this fuse design helps solve
the problem of nuisance “opening” by accommodating
inrush currents that normally cause a fast-acting fuse to
open.
Features
• Time-Lag (Slo-Blo)
• Small size
• Wide range of current
rating available (375mA
to 12A)
• Wide operating
temperature range
• Low temperature
de-rating
• RoHS compliant
• Halogen Free
Electrical Characteristics for Series
% of Ampere
Rating
Opening Time
100% 4 hours, Minimum
200% 1 sec., Min.; 60 sec., Max.
300% 0.2 sec., Min.; 3 sec., Max
800% 0.02 sec., Min.; 0.1 sec., Max.
PS
E
Electrical Specifications by Item
Ampere
Rating
(A)
Amp Code
Max
Voltage
Rating
(V)
Interrupting
Rating
Nominal Cold
Resistance
(Ohms)
Nominal
Melting
I 2 t (A 2 sec)
Agency Approvals
PS
E
0.375 .375 125
50 amperes @ 125 VAC/VDC
300 amperes @ 32 VDC
PSE: 100 amperes @ 100 VAC
1.2000 0.101 x x
0.500 .500 125 0.7000 0.240 x x
0.750 .750 125 0.3600 0.904 x x
001. 001. 125 0.2250 1.98 x x x
1.50 01.5 125 0.0930 3.65 x x x
2.00 002. 125 0.0625 8.20 x x x
2.50 02.5 125 0.0450 15.0 x x x
3.00 003. 125 0.0340 20.16 x x x
3.50 03.5 125 0.0224 26.53 x x x
4.00 004. 125 0.0186 34.40 x x x
5.00 005. 125 0.0136 53.72 x x x
7.00 007. 72
50 amperes @ 72 VAC
50 amperes @ 60 VDC
0.0105 123.83 x x
8 008. 72
50 amperes @ 72 VAC
50 amperes @ 60 VDC
0.0088 137.34 x x
12 012. 72 0.0061 260.46 x x
Applications
• Notebook PC
• LCD/PDP TV
• LCD monitor
• LCD/PDP panel
• LCD backlight inverter
• Portable DVD player
• Power supply
• Networking
• PC server
• Cooling fan system
• Storage system • Telecom system
• Wireless basestation
• White goods
• Game console
• Office Automation
equipment
• Battery charging circuit
protection
• Industrial equipment
• Medical equipment
• Automotive
Agency Approvals
AgeNCy AgeNCy FIle NuMbeR AMpeRe RANge
e10480 375mA - 12A
lR29862 375mA - 12A
PS
E
NbK030205-e10480b 1A - 5A
Notes:
- l 2 t calculated at 8ms.
- Resistance is measured at 10% of rated current, 25ºC