Littelfuse in-line Watertight Fuseholders Catalog Page

POWR-GARD

TO
LOAD

TO

SOURCE

ELECTRICAL TAPE

®

Fuseblocks

in-line Watertight Fuseholders

Description

Littelfuse 600 V in-line watertight fuseholders allow
maximum flexibility for high humidity/corrosive
environments where fuses are required. A variety of
options offer flexibility for several applications.

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 V
Ampere rating: 30 A
Interrupting rating: 200 kA rms symmetrical (with Class CC fuses)
Approvals: LEB/LEX series: UL Recognized Miscellaneous

Fuseholder per UL UL 4248 (File No. E14721)
CSA Certified per C22.2, No. 39 (File No. LR7316)
LEC/LEY series: UL Listed Class CC Branch

Circuit
Fuseholder per UL 512 (File No. E14721)
CSA Certified per C22.2, No. 39 (File No. LR7316)

LEB/LEX

LEC/LEY

Features/Benefits

• Design increases safety by individual device
disconnection for easy servicing, eliminating shock risk

• Individual fixture fusing simplifies maintenance by
allowing individual faulted fixture to be assessed
and serviced without affecting the rest of the circuit

• Increases efficiency by preventing faulted ballast
from severely damaging fixture or device

• Watertight seal

• Fiberglass reinforced polymer body resists damage

from impact (better than phenolic look-a-likes)

• Variety of terminations available for flexible design

• Ultrasonically-welded terminals provide maximum

strength and eliminate leakage

• Variety of fuseholders available with breakaway feature
for applications where light poles may be accidentally
knocked-down

Recommended Fuses:

LEB/LEX series:

Accepts all 1­fuses: CCMR
KLDR, KLKR
BLF, BLN, FLM, FLQ, KLK, KLKD

LEC/LEY series:
Accepts only Littelfuse Class CC fuses:
CCMR
KLDR, KLKR

1

13

2

32

⁄

” x

⁄

” Littelfuse Midget and Class CC

Web Resources

Sample requests, downloadable CAD drawings and other
technical information: www.littelfuse.com/leb

www.littelfuse.com/lec
www.littelfuse.com/lex
www.littelfuse.com/ley
www.littelfuse.com/let

Fuseholder type description

LEB One-pole in-line fuseholder for Midget and Class CC fuses

LEC One-pole in-line fuseholder for Class CC fuses

LET One-pole in-line solid neutral disconnect

LEX Two-pole in-line fuseholder for Midget and Class CC fuses

LEY Two-pole in-line fuseholder for Class CC fuses

1

© JUNE 2011 Littelfuse POWR-GARD Productswww.littelfuse.com

POWR-GARD

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 )

®

Fuseblocks

in-line Watertight Fuseholders

Ordering Information

A & B Crimp Terminal

C & D Crimp Terminal

To order Littelfuse in-line fuseholders and disconnects
by part number, refer to the charts on the next page.

LEB - AA - S

Dimensions in inches

1-Pole

1-Pole Breakaway

J Terminal

Y Terminal

Littelfuse Series

Load Side/Terminal Size

Breakaway Feature

Line Side/Terminal Size

Recommended Crimping Tools

The following crimping tools or equivalents may be used
on either the non-breakaway or breakaway watertight
in-line fuseholders.

terminal size t&B part numBer

A WT161M –

B WT161M MR4C

C M5-GREY Hypress Y34A

D M5-BROWN Hypress Y34A

Burndy part

numBer

2-Pole

2-Pole Breakaway

Insulating Boots

• Molded from engineering-grade thermoplastics, WPB1
and WPB3 boots provide high resistance to corrosive
environments

• WPB1 contains one standard boot for A, B, C, D
or J terminations

• WPB3 offers one Y-pole boot for use with Y-pole
termination

• For watertight protection of non-breakaway Y-pole
termination, order one WPB1 and one WPB3 boot

2

© JUNE 2011 Littelfuse POWR-GARD Productswww.littelfuse.com

POWR-GARD

®

Fuseblocks

in-line Watertight Fuseholders

Ordering Information (1-Pole LEB/LEC and 2-Pole LEX/LEY)

single pole douBle pole

standard

part

numBer

LEB-AA
LEC-AA

LEB-AB
LEC-AB

LEB-AC
LEC-AC

LEB-AD
LEC-AD

LEB-AJ
LEC-AJ

LE B-AYC
LEC-AY C

LEB-BA
LEC-BA

LEB-BB
LEC-BB

LEB-BC
LEC-BC

LEB-BD
LEC-BD

LEB-BJ
LEC-BJ

LEB-BYC
LEC-BYC

LEB-CA
LEC-CA

LEB-CB
LEC-CB

LEB-CC
LEC-CC

LEB-CD
LEC-CD

LEB-CJ
LEC-CJ

LEB-CYC
LEC-CYC

LEB-DA
LEC-DA

LEB-DB
LEC-DB

LEB-DC
LEC-DC

LEB-DD
LEC-DD

LEB-DJ
LEC-DJ

LEB-DYC
LEC-DYC

LEB-JJ
LEC-JJ

LEB-JYC
LEC-JYC

BreakaWay

part

numBer

LEB-AA-S
LEC-AA-S

LEB-AB-S
LEC-AB-S

—
—

—
—

LEB-AJ-S
LEC-AJ-S

LE B-AYC-S
LEC-AYC-S

LEB-BA-S
LEC-BA-S

LEB-BB-S
LEC-BB-S

—
—

—
—

LEB-BJ-S
LEC-BJ-S

LEB-BYC-S
LEC-BYC-S

—
—

—
—

—
—

—
—

—
—

—
—

—
—

—
—

—
—

—
—

—
—

—
—

LEB-JJ-S
LEC-JJ-S

LEB-JYC-S
LEC-JYC-S

standard

part

numBer

LEX-A A
LE Y-AA

LEX-A B
LE Y-AB

LEX-AC
LE Y-AC

LEX-A D
LE Y-AD

—
—

LE X-AYC
LE Y-AYC

LEX-B A
LE Y-BA

LEX-B B
LE Y-BB

LEX-B C
LE Y-BC

LEX-BD
LE Y-BD

—
—

LEX-B YC
LE Y-BYC

LEX-CA
LE Y-CA

LEX-CB
LE Y-CB

LEX-CC
LE Y-CC

LEX-CD
LE Y-CD

LEX-CJ
LE Y-CJ

LEX-CYC
LE Y-CYC

LEX-DA
LE Y-DA

LEX-DB
LE Y-DB

LEX-DC
LE Y-DC

LEX-DD
LE Y-DD

LEX-D J
LE Y-DJ

LEX-DYC
LE Y-DYC

LEX-JJ
LE Y-JJ

—
—

BreakaWay

part

numBer

LEX-AA-S
LEY-AA-S

LEX-A B-S
LE Y-AB- S

—
—

—
—

—
—

LE X-AYC-S
LE Y-AYC- S

LEX-B A-S
LE Y-BA- S

LEX-BB-S
LEY-BB-S

—
—

—
—

—
—

LEX-BYC-S
LEY-BYC-S

—
—

—
—

—
—

—
—

—
—

—
—

—
—

—
—

—
—

—
—

—
—

—
—

LEX-JJ-S
LE Y-JJ- S

—
—

Fuse
type

Midget

Class C C

Midget

Class C C

Midget

Class C C

Midget

Class C C

Midget

Class C C

Midget

Class C C

Midget

Class C C

Midget

Class C C

Midget

Class C C

Midget

Class C C

Midget

Class C C

Midget

Class C C

Midget

Class C C

Midget

Class C C

Midget

Class C C

Midget

Class C C

Midget

Class C C

Midget

Class C C

Midget

Class C C

Midget

Class C C

Midget

Class C C

Midget

Class C C

Midget

Class C C

Midget

Class C C

Midget

Class C C

Midget

Class C C

load terminal selection line terminal selection

load

terminal

tya pe

Copper

Crimp

Copper

Crimp

Copper

Crimp

Copper

Crimp

Copper

Crimp

Copper

Crimp

Copper

Crimp

Copper

Crimp

Copper

Crimp

Copper

Crimp

Copper

Crimp

Copper

Crimp

Copper

Crimp

Copper

Crimp

Copper

Crimp

Copper

Crimp

Copper

Crimp

Copper

Crimp

Copper

Crimp

Copper

Crimp

Copper

Crimp

Copper

Crimp

Copper

Crimp

Copper

Crimp

Copper

Set-Screw

Copper

Set-Screw

terminal
Wire size

#12 to #8 1 • •

#12 to #8 1 • •

#12 to #8 1 • •

#12 to #8 1 • •

#12 to #8 1 • •

#12 to #8 1 • •

#12 to #8
#10 to #2

#12 to #8
#10 to #2

numBer

oF Wires

range

terminal

#12 2 • • #12 2 • •

#12 2 • •

#12 2 • • #4 1 — •

#12 2 • • #2 1 — •

#12 2 • • #10 to #2 1 — •

#12 2 • •

#10 2 • •

#6 1 • •
#4 1 — •

#10 2 • •

#6 1 • •
#4 1 — •

#10 2 • •

#6 1 • •
#4 1 — •

#10 2 • •

#6 1 • •
#4 1 — •

#10 2 • •

#6 1 • •
#4 1 — •

#10 2 • •

#6 1 • •
#4 1 — •
#8 2 • •

#4 1 — • #12 2 • •
#8 2 • •

#4 1 — •

#8 2 • •
#4 1 — • #4 1 — •
#8 2 • •
#4 1 — • #2 1 — •
#8 2 • •

#4 1 — • #10 to # 2 1 — •

#8 2 • •

#4 1 — •

#6 2 • •
#2 1 — • #12 2 • •
#6 2 • •

#2 1 — •

#6 2 • •
#2 1 — • #4 1 — •
#6 2 • •
#2 1 — • #2 1 — •
#6 2 • •

#2 1 — • #10 to # 2 1 — •
#6 2 • •

#2 1 — •

solid

Wire

stranded

per

1 • —

1 — • 1 — •

1 • —

1 — •

Wire

terminal

type

Copper

Crimp

Copper

Crimp

Copper

Crimp

Copper

Crimp

Copper

Set-Screw

"Y " Type

Copper

Set-Screw

Copper

Crimp

Copper

Crimp

Copper

Crimp

Copper

Crimp

Copper

Set-Screw

"Y " Type

Copper

Set-Screw

Copper

Crimp

Copper

Crimp

Copper

Crimp

Copper

Crimp

Copper

Set-Screw

"Y " Type

Copper

Set-Screw

Copper

Crimp

Copper

Crimp

Copper

Crimp

Copper

Crimp

Copper

Set-Screw

"Y " Type

Copper

Set-Screw

Copper

Set-Screw

"Y " Type

Copper

Set-Screw

line
terminal
Wire size

range

#12 to #8 1 • •

#10 2 • •

#6 1 • •
#4 1 — •
#8 2 • •

#6 2 • •

#12 to #8 1 • —

#12 to #8 1 • —

#10 to #2 1 — •

#12 to #8 1 • •

#12 2 • •

#10 2 • •

#6 1 • •
#4 1 — •

#8 2 • •

#4

#6 2 • •

#2 1 — •

#12 to #8 1 • —

#10 to #2 1 — •

#12 to #8 1 • —

#10 to #2 1 — •

#12 to #8 1 • •

#10 2 • •

#6 1 • •
#4 1 — •
#8 2 • •

#6 2 • •

#12 to #8 1 • •

#12 to #8

#10 to #2

#12 to #8 1 • —

#10 2 • •

#6 1 • •
#4 1 — •
#8 2 • •

#6 2 • •

#12 to #8 2 • •

#12 to #8

#10 to #8

#12 to #8

#10 to #2

#12 to #8
#10 to #2

numBer

oF Wires

terminal

per

solid

Wire

1 — •

1 • —

1 — •

1 • —

1 — •

1 • —

1 • —

1 — •

stranded

Wire

3

© JUNE 2011 Littelfuse POWR-GARD Productswww.littelfuse.com

POWR-GARD

®

Fuseblocks

in-line Watertight Fuseholders

Ordering Information (Solid Neutral LET Fuseholders)

load terminal selection line terminal selection

standard

numBer

LET-AA LET-AA-S

LET-AB LET-AB-S

LET-AYC LET-AYC-S

LET-BA LET-BA-S

LET-BB LET-BB-S

LET-BYC LET-BYC-S

LET-JJ LET-JJ-S

LET-JYC LET-JYC-S

part

BreakaWay

part

numBer

Fuse
type

Solid

Neutral

Solid

Neutral

Solid

Neutral

Solid

Neutral

Solid

Neutral

Solid

Neutral

Solid

Neutral

Solid

Neutral

terminal

type

Copper

Crimp

Copper

Crimp

Copper

Crimp

Copper

Crimp

Copper

Crimp

Copper

Crimp

Copper

Set-Screw

Copper

Set-Screw

load
terminal
Wire size

range

#12 to #8 1 • •

#12 2 • • #12 2 • •

#12 to #8 1 • •

#12 2 • •

#12 to #8 1 • • “Y” Type

#12 2 • • #10 to #2 1 — •

#10 2 • •

#10 2 • •

#10 2 • •

#12 to #8 1 • —
#10 to #2 1 — • #10 to #2 1 — •
#12 to #8 1 • —

#10 to #2 1 — • #10 to #2 1 — •

numBer

oF Wires

per

terminal

#6 1 • •
#4 1 — •

#6 1 • • #6 1 • •
#4 1 — • #4 1 — •

#6 1 • •
#4 1 — •

solid

Wire

terminal

Wire

stranded

type

Copper

Crimp

Copper

Crimp

Copper

Set-Screw

Copper

Crimp

Copper

Crimp

“Y” Type

Copper

Set-Screw

Copper

Set-Screw

“Y” Type

Copper

Set-Screw

line
terminal
Wire size

range

#12 to #8 1 • •

#10 2 • •

#12 to #8 1 • —

#12 to #8 1 • •

#12 2 • •

#10 2 • •

#12 to #8 1 • —

#10 to #2 1 — •

#12 to #8 1 • —

#12 to #8 1 • —

numBer

oF Wires

per

terminal

#6 1 • •
#4 1 — •

solid

Wire

Wire

stranded

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

numBer oF Wires

per terminal

1 #12-#8 • •
2 #12 • •
2 #10 • •
1 #6
1 #4
2 #8 • •
1 #4 — •
2 #6 • •
1 #2 — •
1 #12-#8 • —
1 #10-#2 — •
1 #12-#8 • —
1 #10-#2 — •

4

Wire range

solid

Wire

•

—

© JUNE 2011 Littelfuse POWR-GARD Productswww.littelfuse.com

stranded

Wire

•

•

POWR-GARD

®

Fuseblocks

in-line Watertight Fuseholders

Two-Pole Breakaway Holder

Features/Benefits

• LEXT-YY version has a permanently installed “neutral”
slug to prevent the neutral from accidentally being fused

• LEX-YY 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: LE XT-YY-S (S olid neutr al)

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)

LE X-YYC- S

Description

New Littelfuse LEXT-YY-S and LEX-YYC-S series breakaway
fuseholders meet state and federal highway commission
safety standards requiring fuseholders 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 fuseholder with matching
terminals. If a knockdown occurs, the parts separate, leaving
the energized conductor recessed and unexposed.

Ordering Information

load terminal selection line terminal selection

catalog/system

numBer

LEXTYYS LEXT0YYSX

LEXYYCS 0LEXYYCSX

Fuse
type

Midget

Class CC

Midget

Class CC

terminal

type

“Y” type

Copper

Set-Screw

“Y” type

Copper

Set-Screw

load
terminal
Wire size

range

#12 to #8 1 • —

#10 to #2 1 — • 1 — •

#12 to #8

#10 to #2

numBer oF

Wires per

terminal

Applications

• Street lighting

• Marinas

• Travel trailer parks and other locations where fuseholders

may be exposed to physical strain

Web Resources

Sample requests, downloadable CAD drawings and other
technical information: www.littelfuse.com/lext

www.littelfuse.com/lex

line
terminal
Wire size

range

#12 to #8

#10 to #2

#12 to #8

#10 to #2

Wire

standard

terminal

type

“Y” type

Copper

Set-Screw

“Y” type

Copper

Set-Screw

solid

Wire

1 • —

1 — • 1 — •

numBer oF

Wires per

terminal

1 • —

1 • —

solid

Wire

Wire

standard

5

© JUNE 2011 Littelfuse POWR-GARD Productswww.littelfuse.com

POWR-GARD

4 9/16"

( ASSEMBLED LENGTH )

11 1/4"

( ASSEMBLED LENGTH )

5 1/8"

( ASSEMBLED LENGTH )

®

Fuseblocks

in-line Watertight Fuseholders

Two-Pole Breakaway Holder

Dimensions in inches

LEXT-YY-S

LEX-YY-C-S

PERMANENT

NEUTRAL SLUG

4 9/16"

( ASSEMBLED LENGTH )

5 1/8"

( ASSEMBLED LENGTH )

11 1/4"

( ASSEMBLED LENGTH )

4 9/16"

( ASSEMBLED LENGTH )

5 1/8"

( ASSEMBLED LENGTH )

11 1/4"

( ASSEMBLED LENGTH )

Recommended Fuses

Midget Littelfuse types: BLF, BLN, FLM, FLQ, KLK, KLKD
Class CC Littelfuse types: CCMR, KLDR, KLKR

Four WPB3 insulating boots come standard with the LEXT-YY-S and LEX-YY-C-S fuseholders. 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.

6

© JUNE 2011 Littelfuse POWR-GARD Productswww.littelfuse.com