MEGA® 70V-SF51 High Performance (HP) Fuses

Littelfuse MEGA® 70V-SF51 High Performance (HP) Fuses are designed for high current circuit protection up to 500A with Diffusion Pill Technology, which is a mixing of molecules, atoms, or crystals in the solid, liquid, or gaseous state. The series provides 1MΩ open-state resistance after fuse opening, which guarantees safe interruption at any voltage up to 70V. These fuses are available in current ratings from 60A to 500A with an operating temperature range of -40°C to +125°C. Littelfuse MEGA 70V-SF51 HP Fuses are ideal for battery and alternator protection applications and other heavy gauge cables requiring ultra-high current protection.

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Description Datasheet Availability Pricing (IDR) Filter the results in the table by unit price based on your quantity.
Qty. RoHS ECAD Model Fuse Size/Group
Product
Current Rating
Voltage Rating DC
Interrupt Rating
Mounting Style
Termination Style
Fuse Type
Indicator Style
Minimum Operating Temperature
Maximum Operating Temperature
Series
Packaging
Resistance
Littelfuse Automotive Fuses Fuse - Mega 70V (SF51) 2-M8 holes 250A
Datasheet
2.625In Stock
Min.: 1
Mult.: 1

MEGA Bulk
Littelfuse Automotive Fuses Fuse - Mega 70V (SF51) 2-M6 holes 60A
Datasheet
297In Stock
Min.: 1
Mult.: 1

MEGA Bulk
Littelfuse Automotive Fuses Fuse - Mega 70V (SF51) 2-M6 holes 250A
Datasheet
263In Stock
Min.: 1
Mult.: 1

MEGA Bulk
Littelfuse Automotive Fuses Fuse - Mega 70V (SF51) 2-M6 holes 80A
Datasheet
357In Stock
Min.: 1
Mult.: 1

MEGA Bulk
Littelfuse Automotive Fuses Fuse - Mega 70V (SF51) 2-M6 holes 200A
Datasheet
433In Stock
Min.: 1
Mult.: 1

MEGA Bulk
Littelfuse Automotive Fuses Fuse - Mega 70V (SF51) 2-M6 holes 500A
Datasheet
100In Stock
Min.: 1
Mult.: 1

MEGA Bulk
Littelfuse Automotive Fuses Fuse - Mega 70V (SF51) 2-M8 holes 200A
Datasheet
5.129In Stock
Min.: 1
Mult.: 1

MEGA Bulk
Littelfuse Automotive Fuses Fuse - Mega 70V (SF51) 2-M8 holes 300A
Datasheet
1.898In Stock
1.500Expected 08/10/2026
Min.: 1
Mult.: 1

MEGA Bulk
Littelfuse Automotive Fuses Fuse - Mega 70V (SF51) 1-M8 hole 350A
Datasheet
1.369In Stock
Min.: 1
Mult.: 1

MEGA Bulk
Littelfuse Automotive Fuses Fuse - Mega 70V (SF51) 2-M8 holes 60A
Datasheet
1.722In Stock
Min.: 1
Mult.: 1

MEGA Bulk
Littelfuse Automotive Fuses Littelfuse
Datasheet
292In Stock
1.000On Order
Min.: 1
Mult.: 1

MEGA Bolt Down Fuses 80 A 70 VDC 2.5 kA Stud Bolt Down Time Delay / Slow Blow Element Window - 40 C + 125 C MEGA Bulk 2.8 MOhms
Littelfuse Automotive Fuses Fuse - Mega 70V (SF51) 2-M8 holes 125A
Datasheet
1.143In Stock
1.500Expected 23/10/2026
Min.: 1
Mult.: 1

MEGA Bulk
Littelfuse Automotive Fuses Fuse - Mega 70V (SF51) 2-M8 holes 150A
Datasheet
1.764In Stock
Min.: 1
Mult.: 1

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Littelfuse Automotive Fuses Fuse - Mega 70V (SF51) 2-M8 holes 175A
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442In Stock
Min.: 1
Mult.: 1

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Littelfuse Automotive Fuses Fuse - Mega 70V (SF51) 2-M8 holes 225A
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185In Stock
Min.: 1
Mult.: 1

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Littelfuse Automotive Fuses Fuse - Mega 70V (SF51) 2-M6 holes 300A
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763In Stock
Min.: 1
Mult.: 1

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Littelfuse Automotive Fuses Fuse - Mega 70V (SF51) 2-M8 holes 350A
Datasheet
483In Stock
500Expected 16/11/2026
Min.: 1
Mult.: 1

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Littelfuse Automotive Fuses MEGA 70V (SF51)2-M8 HOLES 400A
Datasheet
795In Stock
Min.: 1
Mult.: 1

MEGA Bulk
Littelfuse Automotive Fuses Fuse - Mega 70V (SF51) 2-M8 holes 450A
Datasheet
937In Stock
Min.: 1
Mult.: 1

MEGA Bulk
Littelfuse Automotive Fuses Fuse - Mega 70V (SF51) 2-M8 holes 500A
Datasheet
883In Stock
Min.: 1
Mult.: 1

MEGA Bulk
Littelfuse Automotive Fuses MEGA 70V (SF51)2-M8 HOLES 100A
Datasheet
470In Stock
500Expected 03/02/2027
Min.: 1
Mult.: 1

MEGA Bulk
Littelfuse Automotive Fuses Fuse - Mega 70V (SF51) 2-M6 holes 400A
Datasheet
500Expected 09/12/2026
Min.: 1
Mult.: 1

MEGA Bulk
Littelfuse Automotive Fuses Fuse - Mega 70V (SF51) 1-M6 hole 60A
Datasheet
Non-Stocked Lead-Time 17 Weeks
Min.: 500
Mult.: 500

MEGA Bulk
Littelfuse Automotive Fuses Fuse - Mega 70V (SF51) 1-M8 hole 60A
Datasheet
Non-Stocked Lead-Time 17 Weeks
Min.: 500
Mult.: 500

MEGA Bulk
Littelfuse Automotive Fuses Fuse - Mega 70V (SF51) No-hole 60A
Datasheet
Non-Stocked Lead-Time 17 Weeks
Min.: 500
Mult.: 500

MEGA Bulk