Littelfuse 688 Series User Manual
Cartridge fuses
© 2013 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 12/19/13
Cartridge Fuses
6x25mm > 70VDC High Current Fuse > 688 Series
Agency
Agency File Number
Ampere Range
TUV
T 5025 7715 0001
30A
E10480
30A
688 Series Lead-Free, 6x25mm Fuse
A 70Vdc rated ceramic fuse with remarkable interrupting
and surge withstanding rating in a compact 6x25mm
package, which is well suited for circuit protection in
48Vdc telecom applications.
Agency Approvals
Features
Electrical Characteristics for Series
Applications
% of Ampere
Rating
Ampere Rating
Opening Time
100%
30A
4 Hours, Min.
200%
120 Second, Max.
Amp Code
Amp Rating
Voltage
Rating
Interrupting
Rating
Surge
Rating
Nominal Cold
Resistance
(Ohms)
Nominal
melting I
2
t
under 10In
(A
2
sec)
Agency Approvals
TUV
030.
30
70Vdc
2500A @
70Vdc
1.2/50
-8/20us
20kV/10kA
2.1
4200
x
x
Electrical Characteristic Specifications by Item
• SPD and PDU in Telecom Datacenter
• BTS (Base Transceiver Station)
Description
• In accordance with Underwriter’s Laboratories
Standard UL 248-14
• Compact (6X25mm) form factor with cartridge and axial-
lead package options
• Lead-free, RoHS compliant and Halogen-fee
• Remarkable breaking capacity (interrupting rating)
2500A@70Vdc
• Surge withstanding capability 1.2/50 -8/20us 20kV/10kA
TUV
Additional Information