In-Line Watertight Fuseholders Datasheet by Littelfuse Inc.

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POWR-GARD® Blocks and Holders Datasheet
littelfuse.com © 2019 Littelfuse POWR-GARD® Products
Rev: 020819
1 of 6
IN-LINE WATERTIGHT FUSE HOLDERS
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Description
Recently redesigned, the Littelfuse 600 VAC/VDC 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
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)
Specifications
Voltage rating 600 VAC/VDC
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
Features/Benefits
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
Download CAD drawings, dimensions and other technical
information: littelfuse.com/in-line
IMPROVED
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
PREVIOUS ORDERING
NUMBER
NEW ORDERING
NUMBER
LEB-AA 0LEB00AAX 0LEB00AAXK
LEB-AA-S 0LEB0AASX 0LEB0AASXK
LEB-AB 0LEB00ABX 0LEB00ABXK
LEB-AYC-S 0LEBAYCSX 0LEBAYCSXK
LEB-BB 0LEB00BBX 0LEB00BBXK
LEB-JJ 0LEB00JJX 0LEB00JJXK
LEB-JJ-S 0LEB0JJSX 0LEB0JJSXK
LEB/LEX LEC/LEY
POWR-GARD® Blocks and Holders Datasheet
littelfuse.com © 2019 Littelfuse POWR-GARD® Products
Rev: 020819
2 of 6
IN-LINE WATERTIGHT FUSE HOLDERS
SERIES DESCRIPTION
LEB One-pole in-line fuse holder for Midget and Class CC fuses
LEC One-pole in-line fuse holder for Class CC fuses
LET One-pole in-line fuse holder with
permanently installed solid neutral
LEX Two-pole in-line fuse holder for Midget and Class CC fuses
LEY Two-pole in-line fuse holder for Class CC fuses
Ordering Information
To order Littelfuse in-line fuse holders by part number,
refer to the charts on the next page.
Recommended Crimping Tools
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
Line Side/Terminal Size
TERMINAL SIZE T&B PART NUMBER BURNDY PART NUMBER
A WT161M
B WT161M MR4C
C M5-GREY Hypress Y34A
D M5-BROWN Hypress Y34A
4.5"
10.3"
( ASSEMBLED LENGTH )
5.4"
( ASSEMBLED LENGTH )
4.5"
9.3"
( ASSEMBLED LENGTH )
WPB1 BOOT
(OPTIONAL)
WPB1 BOOT
(OPTIONAL)
INSULATING BOOT
(STANDARD)
INSULATING BOOT
(STANDARD)
4.2"
4.5"
9.3"
( ASSEMBLED LENGTH )
10.3"
( ASSEMBLED LENGTH )
5.3"
( ASSEMBLED LENGTH )
Dimensions Inches
1-Pole
1-Pole Breakaway
2-Pole
2-Pole Breakaway
A & B Crimp Terminal
C & D Crimp Terminal
J Terminal
Y Terminal
Insulating Boots
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
ORDERING NUMBER TERMINAL TYPE
WPB1 A, B, C, D, J
WPB3 Y
% Litteltuse” ExpemxeADnhEd \ “mummy“
POWR-GARD® Blocks and Holders Datasheet
littelfuse.com © 2019 Littelfuse POWR-GARD® Products
Rev: 020819
3 of 6
IN-LINE WATERTIGHT FUSE HOLDERS
SINGLE POLE DOUBLE POLE LOAD TERMINAL SELECTION LINE TERMINAL SELECTION
STANDARD
PART
NUMBER
BREAKAWAY
PART
NUMBER
STANDARD
PART
NUMBER
BREAKAWAY
PART
NUMBER
TERMINAL
TYPE
WIRE SIZE
RANGE
WIRES PER
TERMINAL
SOLID
WIRE
STRANDED
WIRE
TERMINAL
TYPE
WIRE SIZE
RANGE
WIRES PER
TERMINAL
SOLID
WIRE
STRANDED
WIRE
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 #12 to #8
#12 1
2
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
#10
#6
#4
2
1
1
LEB-AC
LEC-AC
LEX-AC
LEY-AC Copper
Crimp #12 to #8
#12 1
2
Copper
Crimp #8
#4 2
1
LEB-AD
LEC-AD
LEX-AD
LEY-AD
Copper
Crimp #12 to #8
#12 1
2
Copper
Crimp #6
#2 2
1
LEB-AJ
LEC-AJ LEB-AJ- S
LEC-AJ-S Copper
Crimp #12 to #8
#12 1
2
Copper
Set-Screw #12 to #8
#10 to #2 1
1
LEB-AYC
LEC-AYC LEB-AYC-SK
LEC-AYC-S LEX-AYC
LEY-AYC LEX-AYC-S
LEY-AYC-S Copper
Crimp #12 to #8
#12 1
2
"Y" Type
Copper
Set-Screw
#12 to #8
#10 to #2 1
1
LEB-BA
LEC-BA LEB-BA-S
LEC-BA-S LEX-BA
LEY-BA LEX-BA-S
LEY-BA-S Copper
Crimp
#10
#6
#4
2
1
1
Copper
Crimp #12 to #8
#12 1
2
LEB-BB-K
LEC-BB LEB-BB-S
LEC-BB-S LEX-BB
LEY-BB LEX-BB-S
LEY-BB-S Copper
Crimp
#10
#6
#4
2
1
1
Copper
Crimp
#10
#6
#4
2
1
1
LEB-BC
LEC-BC
LEX-BC
LEY-BC
Copper
Crimp
#10
#6
#4
2
1
1
Copper
Crimp #8
#4 2
1
LEB-BD
LEC-BD
LEX-BD
LEY-BD
Copper
Crimp
#10
#6
#4
2
1
1
Copper
Crimp #6
#2 2
1
LEB-BJ
LEC-BJ LEB-BJ-S
LEC-BJ-S
Copper
Crimp
#10
#6
#4
2
1
1
Copper
Set-Screw #12 to #8
#10 - #2 1
1
LEB-BYC
LEC-BYC LEB-BYC-S
LEC-BYC-S LEX-BYC
LEY-BYC LEX-BYC-S
LEY-BYC-S Copper
Crimp
#10
#6
#4
2
1
1
"Y" Type
Copper
Set-Screw
#12 to #8
#10 - #2 1
1
LEB-CA
LEC-CA
LEX-CA
LEY-CA
Copper
Crimp #8
#4 2
1
Copper
Crimp #12 to #8
#12 1
2
LEB-CB
LEC-CB
LEX-CB
LEY-CB
Copper
Crimp #8
#4 2
1
Copper
Crimp
#10
#6
#4
2
1
1
LEB-CC
LEC-CC
LEX-CC
LEY-CC
Copper
Crimp #8
#4 2
1
Copper
Crimp #8
#4 2
1
LEB-CD
LEC-CD
LEX-CD
LEY-CD
Copper
Crimp #8
#4 2
1
Copper
Crimp #6
#2 2
1
LEB-CJ
LEC-CJ
LEX-CJ
LEY-CJ
Copper
Crimp #8
#4 2
1
Copper
Set-Screw #12 to #8
#10 - #2 1
1
LEB-CYC
LEC-CYC
LEX-CYC
LEY-CYC
Copper
Crimp #8
#4 2
1
"Y" Type
Copper
Set-Screw
#12 to #8
#10 to #2 1
1
LEB-DA
LEC-DA
LEX-DA
LEY-DA
Copper
Crimp #6
#2 2
1
Copper
Crimp #12 to #8
#12 1
2
LEB-DB
LEC-DB
LEX-DB
LEY-DB
Copper
Crimp #6
#2 2
1
Copper
Crimp
#10
#6
#4
2
1
1
LEB-DC
LEC-DC
LEX-DC
LEY-DC
Copper
Crimp #6
#2 2
1
Copper
Crimp #8
#4 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
Copper
Set-Screw #12 to #8
#10 - #8 2
1
LEB-DYC
LEC-DYC
LEX-DYC
LEY-DYC
Copper
Crimp #6
#2 2
1
"Y" Type
Copper
Set-Screw
#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
Set-Screw #12 to #8
#10 to #2 1
1
Copper
Set-Screw #12 to #8
#10 to #2 1
1
LEB-JYC
LEC-JYC LEB-JYC-S
LEC-JYC-S
Copper
Set-Screw #12 to #8
#10 to #2 1
1
"Y" Type
Copper
Set-Screw
#12 to #8
#10 to #2 1
1
Ordering Information (1-Pole LEB/LEC and 2-Pole LEX/LEY for Class CC and Midget Fuses)
% Litteltuse” ExpemxeADnhEd \ “mummy“
POWR-GARD® Blocks and Holders Datasheet
littelfuse.com © 2019 Littelfuse POWR-GARD® Products
Rev: 020819
4 of 6
IN-LINE WATERTIGHT FUSE HOLDERS
STANDARD
PART
NUMBER
BREAKAWAY
PART
NUMBER
FUSE
TYPE
LOAD TERMINAL SELECTION LINE TERMINAL SELECTION
TERMINAL
TYPE
WIRE SIZE
RANGE
WIRES PER
TERMINAL
SOLID
WIRE
STRANDED
WIRE
TERMINAL
TYPE
WIRE SIZE
RANGE
WIRES PER
TERMINAL
SOLID
WIRE
STRANDED
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 LET-BB-S Solid
Neutral
Copper
Crimp
#10
#6
#4
2
1
1
Copper
Crimp
#10
#6
#4
2
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
Ordering Information (Terminals)
TERMINAL DESIGNATION TERMINAL DESCRIPTION WIRES PER TERMINAL WIRE RANGE SOLID WIRE STRANDED WIRE
A Copper Crimp 1 #12-#8 •
2 #12 •
B Copper Crimp
2 #10 •
1 #6
1 #4
C Copper Crimp 2 #8 •
1 #4 —
D Copper Crimp 2 #6 •
1 #2 —
J Copper Set-Screw 1 #12-#8 •
1 #10-#2 —
Y (2 terminals) “Y” Style Copper Set-Screw 1 #12-#8 •
1 #10-#2 —
Ordering Information (Solid Neutral LET Fuse Holders)
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.
Disclaimer – Copper wire only
POWR-GARD® Blocks and Holders Datasheet
littelfuse.com © 2019 Littelfuse POWR-GARD® Products
Rev: 020819
5 of 6
IN-LINE WATERTIGHT FUSE HOLDERS
Two-Pole Breakaway Holder
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.
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.
Features/Benefits
LEXT-YY version has a permanently installed “neutral”
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 VAC/VDC
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)
Applications
Street lighting
Marinas
Travel trailer parks
Physically strained fuse holders applications
Web Resources
Additional technical information:
littelfuse.com/In-Line
ORDERING
NUMBER
FUSE
TYPE
LOAD TERMINAL SELECTION LINE TERMINAL SELECTION
TERMINAL
TYPE
WIRE SIZE
RANGE
WIRES PER
TERMINAL
SOLID
WIRE
STANDARD
WIRE
TERMINAL
TYPE
WIRE SIZE
RANGE
WIRES PER
TERMINAL
SOLID
WIRE
STANDARD
WIRE
LEXTYYS LEXT0YYSX Midget
Class CC
“Y” type
Copper
Set-Screw
#12 to #8 1 — “Y” type
Copper
Set-Screw
#12 to #8
#10 to #2
1 • —
#10 to #2 1 1
LEXYYCS 0LEXYYCSX Midget
Class CC
“Y” type
Copper
Set-Screw
#12 to #8
#10 to #2
1 “Y” type
Copper
Set-Screw
#12 to #8
#10 to #2
1 • —
1 — • 1
Ordering Information
% Litleltuse Wampum \ Amway \IIHII IIHHI IHHII IIHHI H \FI I“ H IHHII ‘ IIHHI MP— W7 IMMU— 4H“ \HHH ‘HIHI \HHH [I WEE
POWR-GARD® Blocks and Holders Datasheet
littelfuse.com © 2019 Littelfuse POWR-GARD® Products
Rev: 020819
6 of 6
IN-LINE WATERTIGHT FUSE HOLDERS
Two-Pole Breakaway Holder
Recommended Fuses
Class CC Series: CCMR, KLDR, KLKR
Midget Series: BLF, BLN, FLM, FLQ, KLK, KLKD
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.
4 9/16"
( ASSEMBLED LENGTH )
11 1/4"
( ASSEMBLED LENGTH )
5 1/8"
( ASSEMBLED LENGTH )
4 9/16"
( ASSEMBLED LENGTH )
11 1/4"
( ASSEMBLED LENGTH )
5 1/8"
( ASSEMBLED LENGTH )
PERMANENT
NEUTRAL SLUG
4 9/16"
( ASSEMBLED LENGTH )
11 1/4"
( ASSEMBLED LENGTH )
5 1/8"
( ASSEMBLED LENGTH )
4 9/16"
( ASSEMBLED LENGTH )
11 1/4"
( ASSEMBLED LENGTH )
5 1/8"
( ASSEMBLED LENGTH )
PERMANENT
NEUTRAL SLUG
LEXT-YY-S
LEX-YY-C-S
Dimensions Inches
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.

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