MEGA® SN SERIES
SEALED WATER-RESISTANT FUSE HOLDER
Specifications
Current Rating Max:
500A
Fuse Type:
Humidity:
MEGA
0-95% RH
Recommended Torque
Recommended Input Terminal 20Nm (15Lb-ft) 20%,
880014
Stud Torque:
MAX. TORQUE 30Nm(22Lb-ft).
Recommended Mounting
Stud Torque For Littelfuse
MEGA Fuse:
Description
12-18Nm.
The Littelfuse MEGA® SN Series 70V Bolt-Down Sealed
Water-Resistant Fuse Holder is an ideal solution for high-
current, in-line, main or branch circuit protection in harsh
or hazardous environments. AssureLatch™ sealed positive
latching technology is used to ensure a water-resistant and
ignition protected fuse holder design. A waterproof fuse
compartment inside the fuse holder assembly protects
against fuse corrosion.
5-8 N-m (3.7-5.9 lb-ft)
Mounting Torque For M6 Holes:
Temperature in Celsius:
Temperature in Fahrenheit:
Max Voltage Rating:
-50°C to 125°C
-58 °F to +257 °F
70V
The base features an M6 mounting hole and an M6
mounting slot for secure attachment, and it boasts a
footprint that matches similar fuse holders, which makes
switching from an unsealed to sealed fuse holder simple.
A built-in tether between the fuse holder base and cover
keeps the components together during servicing.
Features And Benefits
• AssureLatch™ positive latching technology helps ensure a
water-resistant and ignition protected fuse holder
• Sealed, waterproof fuse compartment protects against fuse
corrosion and allows you to use dielectric spray on cable
terminals without compromising the fuse connections
The MEGA® SN Series sealed fuse holder is available with
• With an IP66/P69K rating, the fuse holder forms a dust-tight
enclosure that protects against water ingress from high-
pressure, high-temperature water jets
and without pre-loaded MEGA® high-current bolt-down fuses.
Applications
• High-Amperage, In-Line, Main or Branch Circuit
• Ignition protected to SAE J1171 and ISO 8846 for
installation in a battery box or on vehicles carrying
hazardous loads
Protection in Harsh or Hazardous Environments
• Stainless steel M8 hardware and tin-plated copper busbars
offer long-term corrosion protection
Web Resources
Download 2D print, installation guide and technical
• Shape-shut clips secure the cover in place
resources at: littelfuse.com/mega-sn
• Built-in tether keeps the cover connected to the base
during servicing
Ordering Information
CURRENT
RATING
MAX
MAX
VOLTAGE
RATING
PART
FUSE
TYPE
CURRENT RATING CURRENT RATING
DESCRIPTION
MOUNTING METHOD
NUMBER
CONTINUOUS
MAX TERMINAL
70V Bolt-Down Sealed Water-Resistant
In-Line Fuse Holder
Bolt-Down, M6 Mounting hole
and M6 Slot X 6MM Long
Bolt-Down, M6 Mounting hole
and M6 Slot X 6MM Long
Bolt-Down, M6 Mounting hole
and M6 Slot X 6MM Long
Bolt-Down, M6 Mounting hole
and M6 Slot X 6MM Long
Bolt-Down, M6 Mounting hole
and M6 Slot X 6MM Long
Bolt-Down, M6 Mounting hole
and M6 Slot X 6MM Long
Bolt-Down, M6 Mounting hole
and M6 Slot X 6MM Long
Bolt-Down, M6 Mounting hole
and M6 Slot X 6MM Long
Bolt-Down, M6 Mounting hole
and M6 Slot X 6MM Long
880014
500A
125A
150A
175A
225A
300A
350A
400A
450A
MEGA
MEGA
MEGA
MEGA
MEGA
MEGA
MEGA
MEGA
MEGA
70VDC
70VDC
70VDC
70VDC
70VDC
70VDC
70VDC
70VDC
70VDC
375A
500A
70V Bolt-Down Sealed Water-Resistant
In-Line Fuse Holder with 125-Amp Fuse
70V Bolt-Down Sealed Water-Resistant
In-Line Fuse Holder with 150-Amp Fuse
70V Bolt-Down Sealed Water-Resistant
In-Line Fuse Holder with 175-Amp Fuse
70V Bolt-Down Sealed Water-Resistant
In-Line Fuse Holder with 225-Amp Fuse
70V Bolt-Down Sealed Water-Resistant
In-Line Fuse Holder with 300-Amp Fuse
70V Bolt-Down Sealed Water-Resistant
In-Line Fuse Holder with 350-Amp Fuse
70V Bolt-Down Sealed Water-Resistant
In-Line Fuse Holder with 400-Amp Fuse
70V Bolt-Down Sealed Water-Resistant
In-Line Fuse Holder with 450-Amp Fuse
880014125
880014150
880014175
880014225
880014300
880014350
880014400
880014450
93A
125A
112A
150A
131A
175A
168A
225A
225A
300A
262A
350A
300A
400A
337A
450A
Littelfuse.com
© 2023 Littelfuse, Inc.
071423-B
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