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Littelfuse.com
© 2023 Littelfuse, Inc.
052323-B
PART
NUMBER
DESCRIPTION
CURRENT
RATING
MAX
FUSE
TYPE
MOUNTING METHOD
MAX
VOLTAGE
RATING
CURRENT RATING
CONTINUOUS
CURRENT RATING
MAX TERMINAL
880014
70V Bolt-Down Sealed Water-Resistant
In-Line Fuse Holder
500A MEGA
Bolt-Down, M6 Mounting hole
and M6 Slot X 6MM Long
70VDC 375A 500A
880014125
70V Bolt-Down Sealed Water-Resistant
In-Line Fuse Holder with 125-Amp Fuse
125A MEGA
Bolt-Down, M6 Mounting hole
and M6 Slot X 6MM Long
70VDC 93A 125A
880014150
70V Bolt-Down Sealed Water-Resistant
In-Line Fuse Holder with 150-Amp Fuse
150A MEGA
Bolt-Down, M6 Mounting hole
and M6 Slot X 6MM Long
70VDC 112 A 150A
880014175
70V Bolt-Down Sealed Water-Resistant
In-Line Fuse Holder with 175-Amp Fuse
175A MEGA
Bolt-Down, M6 Mounting hole
and M6 Slot X 6MM Long
70VDC 131A 175A
880014225
70V Bolt-Down Sealed Water-Resistant
In-Line Fuse Holder with 225-Amp Fuse
225A MEGA
Bolt-Down, M6 Mounting hole
and M6 Slot X 6MM Long
70VDC 168A 225A
880014300
70V Bolt-Down Sealed Water-Resistant
In-Line Fuse Holder with 300-Amp Fuse
300A MEGA
Bolt-Down, M6 Mounting hole
and M6 Slot X 6MM Long
70VDC 225A 300A
880014350
70V Bolt-Down Sealed Water-Resistant
In-Line Fuse Holder with 350-Amp Fuse
350A MEGA
Bolt-Down, M6 Mounting hole
and M6 Slot X 6MM Long
70VDC 262A 350A
880014400
70V Bolt-Down Sealed Water-Resistant
In-Line Fuse Holder with 400-Amp Fuse
400A MEGA
Bolt-Down, M6 Mounting hole
and M6 Slot X 6MM Long
70VDC 300A 400A
880014450
70V Bolt-Down Sealed Water-Resistant
In-Line Fuse Holder with 450-Amp Fuse
450A MEGA
Bolt-Down, M6 Mounting hole
and M6 Slot X 6MM Long
70VDC 337A 450A
MEGA
®
SN SERIES
SEALED WATER-RESISTANT FUSE HOLDER
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
• 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
• Ignition protected to SAE J1171 and ISO 8846 for
installation in a battery box or on vehicles carrying
hazardous loads
• Stainless steel M8 hardware and tin-plated copper busbars
offer long-term corrosion protection
• Shape-shut clips secure the cover in place
• Built-in tether keeps the cover connected to the base
during servicing
Description
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.
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.
The MEGA
®
SN Series sealed fuse holder is available with
and without pre-loaded MEGA
®
high-current bolt-down fuses.
Applications
• High-Amperage, In-Line, Main or Branch Circuit
Protection in Harsh or Hazardous Environments
Web Resources
Download 2D print, installation guide and technical
resources at: littelfuse.com/mega-sn
880014
Ordering Information
Specifications
Current Rating Max: 500A
Fuse Type: MEGA
Humidity: 0-95% RH
Recommended Torque
Recommended Input Terminal
Stud Torque:
Recommended Mounting
Stud Torque For Littelfuse
MEGA Fuse:
Mounting Torque For M6 Holes:
20Nm (15Lb-ft) ±20%,
MAX. TORQUE 30Nm(22Lb-ft).
12-18Nm.
5-8 N-m (3.7-5.9 lb-ft)
Temperature in Celsius: +50°C to 125°C
Temperature in Fahrenheit: -58 °F to +257 °F
Max Voltage Rating: 70V