Fuse is designed for high current circuit protection up to 500A with “Diffusion
Pill Technology.” The MEGA® Fuse also provides time delay characteristics. Designed
and patented by Littelfuse, the MEGA
®
Fuse is ideal for battery and alternator protection
application and other heavy gauge cables requiring ultra-high current protection.
Specifications
Interrupting Rating:
Voltage Rating:
Operating Temperature Range:
Housing Material:
Clear Top Housing Material:
Terminals:
MEGA
®
Fuses
Mounting Torque:
Complies with:
2000A @ 32 VDC
32 VDC
-40˚C to + 125˚C
PPA-GF33HS
PES (top) PPA-GF33HS (bottom)
Copper (Silver plated copper available)
M6 or M8 bolts available
8-14 Nm M6
12-18 Nm M8
ISO 8820-5
Ordering Information
Part Number
0298xxx.ZXEH
0298xxx.ZXH
0298xxx.ZXB
0298xxx.ZXA
0298xxx.UXT
Rating
80 - 250
300 - 500
40 - 250
80 - 500
40 - 250
Package
Bolt Bolt Hole
Plating
Size
Size
Qty
500
500
500
500
500
500
None
None
None
Ag
None
None
M8
M8
M8
M8
M6
M8
2
2
1
2
2
2
Time-Current Characteristics
% of
Rating
75
100
135
200
350
600
Opening Time Min / Max (s)
40-250
–/–
14,400 s / –
120 s / 1800 s
1 s / 15 s
0.300 s / 5 s
0.100 s / 1 s
300-500
14,400 s / –
–/–
–/–
1 s / 15 s
0.500 s / 5 s
0.100 s / 1 s
0298xxx.UX1M8 80 - 500
MEGA
®
Clear Top Housing Fuse
MEGA Clear Top Housing Material Fuse
Ratings
Part Number
0298040._
1
0298060._
1
0298080._
0298100._
0298125._
0298150._
0298175._
0298200._
0298225._
0298250._
0298300._
2
0298350._
2
0298400._
2
Current Rating
(A)
40
60
80
100
125
150
175
200
225
250
300
350
400
450
500
Font Color*
–
–
Typ. Voltage Drop
(mV)
132
119
87
87
80
92
86
83
82
82
74 **
68 **
64 **
60 **
58 **
Cold Resistance
(mΩ)
2.510
1.504
0.720
0.562
0.423
0.352
0.294
0.257
0.222
0.201
0.167
0.138
0.126
0.112
0.092
I
2
t
(A
2
s)
8700
21000
21500
31100
57800
100000
168000
204000
257000
389000
315000
500000
610000
1050000
2050000
0298450._
2
0298500._
2
Note 1: Not mentioned in ISO standards Note 2: Short Circuit Protector only
* 0298xxx.ZXB has white font color on all ratings.
** Voltage Drop measurements for short circuit protectors taken at 75% of rated current.
Littelfuse products are not designed for, and shall not be used for, any purpose (including, without limitation, automotive, military, aerospace, medical, life-saving, life-sustaining or nuclear facility applications, devices intended for
surgical implant into the body, or any other application in which the failure or lack of desired operation of the product may result in personal injury, death, or property damage) other than those expressly set forth in applicable Littelfuse
product documentation. Warranties granted by Littelfuse shall be deemed void for products used for any purpose not expressly set forth in applicable Littelfuse documentation. Littelfuse shall not be liable for any claims or damages
arising out of products used in applications not expressly intended by Littelfuse as set forth in applicable Littelfuse documentation. The sale and use of Littelfuse products is subject to Littelfuse Terms and Conditions of Sale, unless
otherwise agreed by Littelfuse.
littelfuse.com
High Current Fuses
MEGA
®
Fuse Rated 32V
Dimensions
Dimensions in mm
M6: 6.60 (.26")
M8: 8.64 (.34")
Time-Current Characteristic Curves
29.2 (1.15")
9.9 (.39") 40-250A
10.72 (.422")
300-500A
40-250A
1.83 (.072 ) 300-500A
Temperature Rerating Curve
Littelfuse products are not designed for, and shall not be used for, any purpose (including, without limitation, automotive, military, aerospace, medical, life-saving, life-sustaining or nuclear facility applications, devices intended for
surgical implant into the body, or any other application in which the failure or lack of desired operation of the product may result in personal injury, death, or property damage) other than those expressly set forth in applicable Littelfuse
product documentation. Warranties granted by Littelfuse shall be deemed void for products used for any purpose not expressly set forth in applicable Littelfuse documentation. Littelfuse shall not be liable for any claims or damages
arising out of products used in applications not expressly intended by Littelfuse as set forth in applicable Littelfuse documentation. The sale and use of Littelfuse products is subject to Littelfuse Terms and Conditions of Sale, unless
