POWR-GARD® Blocks and Holders
IN-LINE WATERTIGHT FUSE HOLDERS
VED
RO
P
IM
LEB/LEX
Specifications
Voltage rating 600 V ac/V dc
Ampere rating
up to 30 A
Interrupting rating
200 kA rms symmetrical (with Class CC fuses)
Approvals
LEB/LEX series UL Recognized
Miscellaneous
Fuse holder per UL UL 4248 (File: E14721)
CSA Certified per C22.2, No. 39 (File: LR7316)
LEC/LEY series UL Listed Class CC Branch
Circuit
Fuse holder per UL 512 (File: E14721)
CSA Certified per C22.2, No. 39 (File: LR7316)
Flammability Rating
UL 94 V-0
Description
Features/Benefits
Recently redesigned, the Littelfuse 600 V ac/V dc in-line
watertight fuse holders allow maximum protection for high
humidity and corrosive environments. The fuse holders are
designed to be touch-safe and flexible for use in a variety
of applications. See the list below for the redesigned part
numbers.
Applications
LEC/LEY
Street lighting and parking lot lighting
Sports lighting and various outdoor illuminated signs
Boat electrical circuits, tractors/yard equipment and
general outdoor circuit protection (such as traffic
signals, alley lighting and electric wheelchairs)
Design increases safety by facilitating individual device
disconnection for easy servicing, eliminating shock risk
Increases efficiency by preventing faulted ballast from
severely damaging fixture or device
Designed to meet IP67 touch-safe standards
Watertight o-ring seal
Variety of terminations available for flexible design
Insulating boots available for harsh environments
Recommended Fuses
LEB/LEX series:
Class CC Series: CCMR, KLDR, KLKR
Midget Series: BLF, BLN, FLM, FLQ, KLK, KLKD
LEC/LEY series:
Class CC Series: CCMR, KLDR, KLKR
Web Resources
TO
LOAD
TO
SOURCE
ELECTRICAL TAPE
ELECTRICAL TAPE
TO
LOAD
Download CAD drawings, dimensions and other technical
information: Littelfuse.com/in-line
Look for these part numbers featuring our
improved design
• Better surface area for ergonomic comfort, improved grip
and better torque
• More pronounced seating – automatically seats as user
begins twisting
• Chamfered edges for additional installation comfort
BASE PART
NUMBER
LEB-AA
LEB-AA-S
LEB-AB
LEB-AYC-S
LEB-BB
LEB-JJ
LEB-JJ-S
1 of 6
PREVIOUS ORDERING
NUMBER
0LEB00AAX
0LEB0AASX
0LEB00ABX
0LEBAYCSX
0LEB00BBX
0LEB00JJX
0LEB0JJSX
NEW ORDERING
NUMBER
0LEB00AAXK
0LEB0AASXK
0LEB00ABXK
0LEBAYCSXK
0LEB00BBXK
0LEB00JJXK
0LEB0JJSXK
Littelfuse.com
@ 2020 Littelfuse, Inc.
Rev: 052720
POWR-GARD® Blocks and Holders
IN-LINE WATERTIGHT FUSE HOLDERS
Ordering Information
Recommended Crimping Tools
To order Littelfuse in-line fuse holders by part number,
refer to the charts on the next page.
The following crimping tools or equivalents may be used
on either the non-breakaway or breakaway watertight
in-line fuse holders.
LEB - AA - S
Littelfuse Series
Load Side/Terminal Size
Breakaway Feature
T&B PART NUMBER
A
WT161M
–
B
WT161M
MR4C
C
M5-GREY
Hypress Y34A
D
M5-BROWN
Hypress Y34A
Line Side/Terminal Size
SERIES
DESCRIPTION
LEB
One-pole in-line fuse holder for Midget and Class CC fuses
LEC
LEX
One-pole in-line fuse holder for Class CC fuses
One-pole in-line fuse holder with
permanently installed solid neutral
Two-pole in-line fuse holder for Midget and Class CC fuses
LEY
Two-pole in-line fuse holder for Class CC fuses
LET
TERMINAL SIZE
BURNDY PART NUMBER
Dimensions Inches
1-Pole
WPB1 BOOT
(OPTIONAL)
A & B Crimp Terminal
WPB1 BOOT
(OPTIONAL)
4.5"
9.3"
( ASSEMBLED LENGTH )
1-Pole Breakaway
C & D Crimp Terminal
INSULATING BOOT
(STANDARD)
4.5"
INSULATING BOOT
(STANDARD)
5.4"
( ASSEMBLED LENGTH )
10.3"
( ASSEMBLED LENGTH )
J Terminal
2-Pole
Y Terminal
4.5"
9.3"
( ASSEMBLED LENGTH )
2-Pole Breakaway
4.2"
5.3"
( ASSEMBLED LENGTH )
Insulating Boots
10.3"
( ASSEMBLED LENGTH )
Molded from engineering-grade thermoplastics which
provide high resistance to corrosive environments
For watertight protection of non-breakaway Y-pole
termination, order one WPB1 and one WPB3 boot
Standard with all breakaway fuse holders
ORDERING NUMBER
TERMINAL TYPE
WPB1
A, B, C, D, J
WPB3
Y
2 of 6
Littelfuse.com
@ 2020 Littelfuse, Inc.
Rev: 052720
POWR-GARD® Blocks and Holders
IN-LINE WATERTIGHT FUSE HOLDERS
Ordering Information (1-Pole LEB/LEC and 2-Pole LEX/LEY for Class CC and Midget Fuses)
SINGLE POLE
DOUBLE POLE
LOAD TERMINAL SELECTION
BREAKAWAY
TERMINAL WIRE SIZE WIRES PER
PART
TYPE
RANGE TERMINAL
NUMBER*
LINE TERMINAL SELECTION
STANDARD
PART
NUMBER
BREAKAWAY
PART
NUMBER*
STANDARD
PART
NUMBER
LEB-AA-K
LEC-AA
LEB-AA-SK
LEC-AA-S
LEX-AA
LEY-AA
LEX-AA-S
LEY-AA-S
Copper
Crimp
#12 to #8
#12
1
2
•
•
•
•
Copper
Crimp
LEB-AB-K
LEC-AB
LEB-AB-S
LEC-AB-S
LEX-AB
LEY-AB
LEX-AB-S
LEY-AB-S
Copper
Crimp
#12 to #8
#12
1
2
•
•
•
•
Copper
Crimp
LEB-AC
LEC-AC
—
—
LEX-AC
LEY-AC
—
Copper
Crimp
#12 to #8
#12
1
2
•
•
•
•
LEB-AD
LEC-AD
—
—
LEX-AD
LEY-AD
—
—
Copper
Crimp
#12 to #8
#12
1
2
•
•
LEB-AJ
LEC-AJ
LEB-AJ- S
LEC-AJ-S
—
—
Copper
Crimp
#12 to #8
#12
1
2
LEB-AYC
LEC-AYC
LEB-AYC-SK
LEC-AYC-S
LEX-AYC
LEY-AYC
LEX-AYC-S
LEY-AYC-S
Copper
Crimp
LEB-BA
LEC-BA
LEB-BA-S
LEC-BA-S
LEX-BA
LEY-BA
LEX-BA-S
LEY-BA-S
Copper
Crimp
LEB-BB-K
LEC-BB
LEB-BB-S
LEC-BB-S
LEX-BB
LEY-BB
LEX-BB-S
LEY-BB-S
Copper
Crimp
LEB-BC
LEC-BC
—
—
LEX-BC
LEY-BC
—
—
Copper
Crimp
LEB-BD
LEC-BD
—
—
LEX-BD
LEY-BD
—
—
Copper
Crimp
LEB-BJ
LEC-BJ
LEB-BJ-S
LEC-BJ-S
—
—
—
—
Copper
Crimp
LEB-BYC
LEC-BYC
LEB-BYC-S
LEC-BYC-S
LEX-BYC
LEY-BYC
LEX-BYC-S
LEY-BYC-S
Copper
Crimp
LEB-CA
LEC-CA
—
—
LEX-CA
LEY-CA
—
—
Copper
Crimp
#12 to #8
#12
#10
#6
#4
#10
#6
#4
#10
#6
#4
#10
#6
#4
#10
#6
#4
#10
#6
#4
#8
#4
LEB-CB
LEC-CB
—
—
LEX-CB
LEY-CB
—
—
Copper
Crimp
LEB-CC
LEC-CC
—
—
LEX-CC
LEY-CC
—
—
LEB-CD
LEC-CD
—
—
LEX-CD
LEY-CD
LEB-CJ
LEC-CJ
—
—
LEB-CYC
LEC-CYC
SOLID
WIRE
STRANDED TERMINAL WIRE SIZE WIRES PER
WIRE
TYPE
RANGE TERMINAL
SOLID
WIRE
STRANDED
WIRE
Copper
Crimp
#12 to #8
#12
#10
#6
#4
#8
#4
1
2
2
1
1
2
1
•
•
•
•
—
•
—
•
•
•
•
•
•
•
•
•
Copper
Crimp
#6
#2
2
1
•
—
•
•
•
•
•
•
#12 to #8
#10 to #2
1
1
•
—
—
•
1
2
2
1
1
2
1
1
2
1
1
2
1
1
2
1
1
2
1
1
2
1
•
•
•
•
—
•
•
—
•
•
—
•
•
—
•
•
—
•
•
—
•
—
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
Copper
Set-Screw
"Y" Type
Copper
Set-Screw
Copper
Crimp
#12 to #8
#10 to #2
1
1
•
—
—
•
Copper
Crimp
#12 to #8
#12
#10
#6
#4
#8
#4
1
2
2
1
1
2
1
•
•
•
•
—
•
—
•
•
•
•
•
•
•
Copper
Crimp
#6
#2
2
1
•
—
•
•
Copper
Set-Screw
"Y" Type
Copper
Set-Screw
Copper
Crimp
#12 to #8
#10 - #2
1
1
•
—
—
•
#12 to #8
#10 - #2
1
1
•
—
—
•
#8
#4
2
1
•
—
•
•
Copper
Crimp
Copper
Crimp
#8
#4
2
1
•
—
•
•
Copper
Crimp
#12 to #8
#12
#10
#6
#4
#8
#4
1
2
2
1
1
2
1
•
•
•
•
—
•
—
•
•
•
•
•
•
•
—
—
Copper
Crimp
#8
#4
2
1
•
—
•
•
Copper
Crimp
#6
#2
2
1
•
—
•
•
LEX-CJ
LEY-CJ
—
—
Copper
Crimp
#8
#4
2
1
•
—
•
•
#12 to #8
#10 - #2
1
1
•
—
•
•
—
—
LEX-CYC
LEY-CYC
—
—
Copper
Crimp
#8
#4
2
1
•
—
•
•
#12 to #8
#10 to #2
1
1
•
—
—
•
LEB-DA
LEC-DA
—
—
LEX-DA
LEY-DA
—
—
Copper
Crimp
#6
#2
2
1
•
—
•
•
Copper
Set-Screw
"Y" Type
Copper
Set-Screw
Copper
Crimp
LEB-DB
LEC-DB
—
—
LEX-DB
LEY-DB
—
—
Copper
Crimp
#6
#2
2
1
•
—
•
•
Copper
Crimp
LEB-DC
LEC-DC
—
—
LEX-DC
LEY-DC
—
—
Copper
Crimp
#6
#2
2
1
•
—
•
•
Copper
Crimp
#12 to #8
#12
#10
#6
#4
#8
#4
1
2
2
1
1
2
1
•
•
•
•
—
•
—
—
•
•
•
•
•
•
LEB-DD
LEC-DD
—
—
LEX-DD
LEY-DD
—
—
Copper
Crimp
#6
#2
2
1
•
—
•
•
Copper
Crimp
#6
#2
2
1
•
—
•
•
LEB-DJ
LEC-DJ
—
—
LEX-DJ
LEY-DJ
—
—
Copper
Crimp
#6
#2
2
1
•
—
•
•
#12 to #8
#10 - #8
2
1
•
—
•
•
LEB-DYC
LEC-DYC
—
—
LEX-DYC
LEY-DYC
—
—
Copper
Crimp
#6
#2
2
1
•
—
•
•
#12 to #8
#10 to #8
1
1
•
—
—
•
LEB-JJ-K
LEC-JJ
LEB-JJ-SK
LEC-JJ-S
LEX-JJ
LEY-JJ
LEX-JJ-S
LEY-JJ-S
Copper #12 to #8
Set-Screw #10 to #2
1
1
•
•
—
•
#12 to #8
#10 to #2
1
1
•
—
—
•
LEB-JYC
LEB-JYC-S
—
—
Copper #12 to #8
LEC-JYC
LEC-JYC-S
—
—
Set-Screw #10 to #2
* Insulating boots come included with breakaway version
1
1
•
—
—
•
Copper
Set-Screw
"Y" Type
Copper
Set-Screw
Copper
Set-Screw
"Y" Type
Copper
Set-Screw
#12 to #8
#10 to #2
1
1
•
—
—
•
3 of 6
Copper
Crimp
Littelfuse.com
@ 2020 Littelfuse, Inc.
Rev: 052720
POWR-GARD® Blocks and Holders
IN-LINE WATERTIGHT FUSE HOLDERS
Ordering Information (Solid Neutral LET Fuse Holders)
LOAD TERMINAL SELECTION
STANDARD BREAKAWAY
PART
PART
NUMBER NUMBER*
FUSE
TYPE
LINE TERMINAL SELECTION
TERMINAL WIRE SIZE WIRES PER SOLID STRANDED TERMINAL WIRE SIZE WIRES PER
TYPE
RANGE
TERMINAL WIRE
WIRE
TYPE
RANGE
TERMINAL
SOLID STRANDED
WIRE
WIRE
LET-AA
LET-AA-S
Solid
Neutral
Copper
Crimp
#12 to #8
#12
1
2
•
•
•
•
Copper
Crimp
#12 to #8
#12
1
2
•
•
•
•
LET-AB
LET-AB-S
Solid
Neutral
Copper
Crimp
#12 to #8
#12
1
2
•
•
•
•
Copper
Crimp
#10
#6
#4
2
1
1
•
•
—
•
•
•
LET-AYC
LET-AYC-S
Solid
Neutral
Copper
Crimp
#12 to #8
#12
1
2
•
•
•
•
“Y” Type
Copper
Set-Screw
#12 to #8
#10 to #2
1
1
•
—
—
•
LET-BA
LET-BA-S
Solid
Neutral
Copper
Crimp
#10
#6
#4
2
1
1
•
•
—
•
•
•
Copper
Crimp
#12 to #8
#12
1
2
•
•
•
•
LET-BB-S
Solid
Neutral
#10
#6
#4
2
1
1
•
•
—
•
•
•
Copper
Crimp
#10
#6
#4
2
LET-BB
1
1
•
•
—
•
•
•
LET-BYC
LET-BYC-S
Solid
Neutral
Copper
Crimp
#10
#6
#4
2
1
1
•
•
—
•
•
•
“Y” Type
Copper
Set-Screw
#12 to #8
#10 to #2
1
1
•
—
—
•
LET-JJ
LET-JJ-S
Solid
Neutral
Copper
Set-Screw
#12 to #8
#10 to #2
1
1
•
—
—
•
Copper
Set-Screw
#12 to #8
#10 to #2
1
1
•
—
—
•
LET-JYC
LET-JYC-S
Solid
Neutral
Copper
Set-Screw
#12 to #8
#10 to #2
1
1
•
—
—
•
“Y” Type
Copper
Set-Screw
#12 to #8
#10 to #2
1
1
•
—
—
•
Copper
Crimp
* Insulating boots come included with breakaway version
Ordering Information (Terminals)
TERMINAL DESIGNATION
TERMINAL DESCRIPTION
A
Copper Crimp
B
Copper Crimp
C
Copper Crimp
D
Copper Crimp
J
Copper Set-Screw
Y (2 terminals)
“Y” Style Copper Set-Screw
WIRES PER TERMINAL
WIRE RANGE
SOLID WIRE
STRANDED WIRE
1
2
2
1
1
2
1
2
1
1
1
1
1
#12-#8
#12
#10
#6
#4
#8
#4
#6
#2
#12-#8
#10-#2
#12-#8
#10-#2
•
•
•
•
—
•
—
•
—
•
—
•
—
•
•
•
•
•
•
•
•
•
—
•
—
•
Disclaimer – Copper wire only
Disclaimer Notice – Information furnished is believed to be accurate and reliable. However, users should independently evaluate the suitability of and test each product selected for their own applications. Littelfuse
products are not designed for, and may not be used in, all applications. Read complete Disclaimer Notice at www.littelfuse.com/product-disclaimer.
4 of 6
Littelfuse.com
@ 2020 Littelfuse, Inc.
Rev: 052720
POWR-GARD® Blocks and Holders
IN-LINE WATERTIGHT FUSE HOLDERS
Two-Pole Breakaway Holder
Features/Benefits
EXT-YY version has a permanently installed “neutral”
L
slug to prevent the neutral from accidentally being fused
LEX-YYC version allows for fusing of line-to-line loads
or other applications requiring two fuses to disconnect
under strain
Fiberglass polymer body resists damage from impact
Four “Y” type set-screw terminals accommodate a wide
range of solid and stranded Cu or Al conductors
O-ring and terminal boots form watertight seal,
preventing leakage
Specifications
Part numbers LEXT-YY-S (Solid neutral)
LEX-YYC-S
Voltage Rating
600 V ac/V dc
Ampere Rating 30 A
Interrupting Rating 200 kA with Class CC Fuses
Y Terminals
Tin Plated Copper w/ set screws
Wire Size
1 solid #12 to #8 or
1 stranded #10 to #2
Approvals
UL Recognized (File: E14721)
CSA Certified (File: LR7316)
Description
Littelfuse LEXT-YY-S and LEX-YYC-S series breakaway fuse
holders meet state and federal highway commission safety
standards requiring fuse holders to readily disconnect from
power in case of a pole knockdown.
Applications
The breakaway feature consists of a receptacle permanently
attached to the power line and a fuse holder with matching
terminals. If a knockdown occurs, the parts separate, leaving
the energized conductor recessed and unexposed.
Street lighting
Marinas
Travel trailer parks
Physically strained fuse holders applications
Web Resources
Additional technical information:
Littelfuse.com/In-Line
Ordering Information
FUSE
TYPE
TERMINAL
TYPE
WIRE SIZE
RANGE
WIRES PER SOLID
TERMINAL WIRE
LEXTYYS
LEXT0YYSX
Midget
Class CC
“Y” type
Copper
Set-Screw
#12 to #8
1
•
—
#10 to #2
1
—
•
LEXYYCS
0LEXYYCSX
Midget
Class CC
“Y” type
Copper
Set-Screw
#12 to #8
1
•
—
#10 to #2
1
—
•
5 of 6
TERMINAL
TYPE
WIRE SIZE
RANGE
WIRES PER
TERMINAL
SOLID
WIRE
STANDARD
WIRE
ORDERING
NUMBER
LINE TERMINAL SELECTION
STANDARD
WIRE
LOAD TERMINAL SELECTION
“Y” type
Copper
Set-Screw
#12 to #8
1
•
—
#10 to #2
1
—
•
“Y” type
Copper
Set-Screw
#12 to #8
1
•
—
#10 to #2
1
—
•
Littelfuse.com
@ 2020 Littelfuse, Inc.
Rev: 052720
POWR-GARD® Blocks and Holders
IN-LINE WATERTIGHT FUSE HOLDERS
Two-Pole Breakaway Holder
4 9/16"
( ASSEMBLED LENGTH )
5 1/8"
( ASSEMBLED LENGTH )
11 1/4"
( ASSEMBLED LENGTH )
Dimensions Inches
LEXT-YY-S
PERMANENT
NEUTRAL SLUG
4 9/16"
( ASSEMBLED LENGTH )
5 1/8"
( ASSEMBLED LENGTH )
11 1/4"
( ASSEMBLED LENGTH )
LEX-YY-C-S
4 9/16"
( ASSEMBLED LENGTH )
5 1/8"
( ASSEMBLED LENGTH )
11 1/4"
( ASSEMBLED LENGTH )
Recommended Fuses
Class CC Series: CCMR, KLDR, KLKR
Midget Series: BLF, BLN, FLM, FLQ, KLK, KLKD
PERMANENT
NEUTRAL SLUG
Four WPB3 insulating boots come standard with the LEXT-YY-S and LEX-YY-C-S fuse holders. Molded from non-conductive
engineering grade thermoplastic to deliver a watertight seal in corrosive environments, they can be trimmed to the specific
conductor size insuring a snug fit.
Disclaimer Notice – Information furnished is believed to be accurate and reliable. However, users should independently evaluate
of and test each product selected for their own applications. Littelfuse
4 9/the
16suitability
"
products are not designed for, and may not be used in, all applications. Read complete Disclaimer Notice at www.littelfuse.com/product-disclaimer.
( ASSEMBLED LENGTH )
5 1/8"
( ASSEMBLED LENGTH )
11 1/4"
6 ofLENGTH
6
( ASSEMBLED
)
Littelfuse.com
@ 2020 Littelfuse, Inc.
Rev: 052720
