Datasheet

High Current Fuses
MEGA® and MEGA® Clear Top Fuse Rated 32V
The MEGA® 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
MEGA ® Fuses
Interrupting Rating: 2000A @ 32 VDC
Voltage Rating: 32 VDC
Operating Temperature Range: -40˚C to + 125˚C
Housing Material: PPA-GF33HS
Clear Top Housing Material: PES (top) PPA-GF33HS (bottom)
Terminals:Copper (Silver plated copper available)
M6 or M8 bolts available
Mounting Torque: 8-14 Nm M6
12-18 Nm M8
Complies with: ISO 8820-5
Time-Current Characteristics
Ordering Information
Part Number
MEGA Clear Top Housing Fuse
®
Package
Bolt
Plating
Size
Size
Rating
0298xxx.ZXH
500
none
M8
300 - 500
0298xxx.ZXEH
500
none
M8
80 - 250
0298xxx.ZXB
500
Ag
M8
40 - 250
0298xxx.ZXA
500
none
M6
80 - 500
M8
40 - 250
% of Rating
0298xxx.UXT
500
none
40-250
300-500
–/–
14,400 s / –
100
14,400 s / –
–/–
135
120 s / 1800 s
–/–
200
1 s / 15 s
1 s / 15 s
350
0.300 s / 5 s
0.500 s / 5 s
600
0.100 s / 1 s
0.100 s / 1 s
75
MEGA Clear Top Housing Material Fuse
Opening Time Min / Max (s)
Ratings
Part Number
Current Rating
(A)
Font Color*
Typ. Voltage Drop
(mV)
Cold Resistance
(mΩ)
I2t
(A2s)
0298040._1
40
–
132
2.510
8700
1
0298060._
60
–
119
1.504
21000
0298080._
80
87
0.720
21500
0298100._
100
87
0.562
31100
0298125._
125
80
0.423
57800
0298150._
150
92
0.352
100000
0298175._
175
86
0.294
168000
0298200._
200
83
0.257
204000
0298225._
225
82
0.222
257000
0298250._
250
82
0.201
389000
2
0298300._
300
74 **
0.167
315000
0298350._2
350
68 **
0.138
500000
2
0298400._
400
64 **
0.126
610000
0298450._2
450
60 **
0.112
1050000
0298500._2
500
58 **
0.092
2050000
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 designed for specific applications and should not be used for any purpose (including, without limitation, automotive applications) not 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 product 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 product documentation.
littelfuse.com
High Current Fuses
MEGA® Fuse Rated 32V
Time-Current Characteristic Curves
Dimensions
Dimensions in mm
M6: 6.60 (.26")
M8: 8.64 (.34")
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 designed for specific applications and should not be used for any purpose (including, without limitation, automotive applications) not 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 product 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 product documentation.
littelfuse.com
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