© 2019 Littelfuse Commercial Vehicle Products
Rev: 062519
littelfuse.com
1 of 2
Product Datasheet
SN SERIES MEGA FUSE HOLDER
32V DC • 500A • In-line • AssureLatch™ Technology
Specifications Overview
Max Voltage Rating: 32V DC
Max Current Rating: 500A
Studs: M8x1.25 thread
Recommended Stud Torque: 20 Nm / 15 lb-ft
Temperature Range: -50 to +125 °C
Ingress Protection: IP66 / IP6K9K
Humidity: 0-95% RH
Shock: 50 G
Vibration: 8 G
Dimensions: 130 x 47.4 x 40.7 mm
Recommended Fuses
• Littelfuse series: MEGA
®
• Competitor cross-reference equivalents
Ordering Information
Description
The SN-MEGA is a high amperage in-line fuse holder with
sealed positive latching technology. The fuse holder base and
cover are secured together with AssureLatch™ technology to
form a water resistant and ignition protected assembly.
Covers are retained to the base with a built in tether to
ensure there are no missing components during servicing.
Bases feature thru-hole provisions to ensure that the unit is
mounted securely to the application and features a footprint
identical to similar fuse holders which allows for change-over
from existing unsealed technology.
Features and Benefits
• Provides high amperage, in-line, main or branch Circuit
Protection in harsh or hazardous environments
• Waterproof/sealed fuse compartment provides protection
from fuse corrosion
• Ignition protected to SAE J1171 and ISO 8846 for
installation in a battery box or on vehicles carrying
hazardous loads
• All stainless steel hardware and tin-plated 100% pure
copper optimize long-term corrosion protection
• Allows dielectric spray on cable terminals without
compromising fuse connections
• Cover retention ensured through integrated tether
• AssureLatch™ technology for worry-free positive latching
• Available with custom pre-loaded fuses
Web Resources
Download 2D outline and additional technical resources at:
littelfuse.com/sn-mega
PART NUMBER DESCRIPTION
880014 SN MEGA Fuse Holder Assembly
880014080 SN MEGA Fuse Holder with 80A Mega Fuse
880014100 SN MEGA Fuse Holder with 100A Mega Fuse
880014125 SN MEGA Fuse Holder with 125A Mega Fuse
880014150 SN MEGA Fuse Holder with 150A Mega Fuse
880014200 SN MEGA Fuse Holder with 200A Mega Fuse
880014225 SN MEGA Fuse Holder with 225A Mega Fuse
880014250 SN MEGA Fuse Holder with 250A Mega Fuse
880014300 SN MEGA Fuse Holder with 300A Mega Fuse
880014350 SN MEGA Fuse Holder with 350A Mega Fuse
880014400 SN MEGA Fuse Holder with 400A Mega Fuse
880014450 SN MEGA Fuse Holder with 450A Mega Fuse
880014500 SN MEGA Fuse Holder with 500A Mega Fuse
© 2019 Littelfuse Commercial Vehicle Products
Rev: 062519
littelfuse.com
2 of 2
Product Datasheet
Dimensions in millimeters
130
5.12
REMOVABLE
COVER
47.4
±0.75
1.87
±.030
129.31
±1
5.091
±.039
40.7
±0.5
1.60
±.020
6.6
(M6, [1/4"]
CLEARANCE HOLES)
.26
101.6
±0.5
4.0
±.020
107.4
±0.5
4.2
±.020
20.3
±0.5
.80
±.020
38.4
±0.5
1.51
±.020
125
±1
4.92
±.039
FUSE LOCATION
TOP VIEW COVER REMOVED
Datasheet Replaces Hotfeed Number D-654
Visit Littelfuse.com for the most up-to-date product information. 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.
Configuration
TO DC
POSITIVE
LOADS
FUSE BLOCK
FROM DC
NEGATIVE
RETURNS