NEMA Terminal Blocks
One Piece Blocks
D
ESCRIPTION
/A
PPLICATION
Traditionally, these rugged One Piece
Blocks are the standard means of
connection for heavy industrial
applications like rail transport, utility,
and traffic control industries. Ideal for
dirty
and
vibration
prone
environments.
ONE PIECE PHENOLIC
BLOCKS
D
ESIGN
A
DVANTAGES
• Two, four, six. eight. and twelve
circuit models available — 5/8"
center-to-center contact spacing.
• No assembly required — each is a
single, easily installed unit.
• Three contact styles available —
strap screw, captive strap clamp.
and moving tubular contact.
• Use wire up to AWG #6 with tubular
contact. Strap screw and strap
clamp contacts are available for #8
and smaller.
• Withstand voltages in excess of
IEEE standards for 750 volts. Meet
clearance and creepage spacings
specified in UL, CSA, and NEMA
Industrial Control Standards for 600
Volts.
• Strap contacts rated at 50 amperes
— tubular contact conservatively
rated at 70 amperes.
• Pilot point screws supplied with
strap screw and clamp contacts —
speeds installation time.
• Plain white marking strip supplied
with each block — circuits are
easily identified.
• Special purpose blocks available—
choose from blocks with solder
posts, printed circuit board pins, or
nuts on screw posts, removable
circuit links, and a shorting bar.
LR25557
E63810
Thomas & Betts Electronics/OEM Division Tel: 901-252-5000 Fax: 901-252-1312
307
NEMA Terminal Blocks
One Piece Blocks
B100, #B100 SERIES
ONE PIECE — PHENOLIC
P
HYSICAL
P
ROPERTIES
Housing:
H
OUSING
M
ATERIAL
:
Phenolic, filled flame retardant
F
LAMMABILITY
:
UL94V-1
C
OLOR
:
Black
Contacts:
S
TANDARD
M
ATERIAL
:
Electrical grade copper or
copper alloy conductor. Steel screws plated to
resist corrosion in most industrial applications.
B
RASS
M
ATERIAL
:
For Corrosive Environment
(2B100, 4B100 Series) Nickel plated brass straps
and screws. Exceeds specification Q Q-N-290
Class 1, Type VII
W
IRE
R
ANGE
:
Strap Screw: #18-8 AWG solid or
stranded; Strap Clamp: #18-8 AWG solid or
stranded; Tubular Clamp: #14-6 AWG solid or
stranded
S
CREW
T
YPE
:
Strap Screw: #10-32 Binding Head;
Strap Clamp: #8-32 Pan head w/Clamp and
Lockwasher; Tubular Clamp: #1/4"-28 Set Screw
S
TRAP
S
CREW
:
7/16" max. lug width
Ordering Information
CIRCUITS
STEEL
SCREW
W/STRAP
STRAP
CLAMP
TUBULAR
CLAMP
BRASS
SCREW
W/STRAP
Contact Type
Mechanical:
P
ITCH
(
TERMINAL SPACING
):
.63"
W
IRE
S
TRIP
L
ENGTH
:
Strap Screw: as needed for
lugging; Strap Clamp: 1/2"; Tubular Clamp: 1/2"
Standard
E
LECTRICAL
P
ROPERTIES
M
AXIMUM
C
URRENT
:
70A for a single #6 AWG wire
O
PERATING
V
OLTAGE
:
Blocks meet 600V creepage
and clearance requirements for general industrial
control equipment and panelboards; greatly
exceeds IEEE switchgear standards for 750 volts.
D
IELECTRIC
S
TRENGTH
(RH 40% @
SEA LEVEL
):
300
Volts/mil thickness per ASTM D149
UL H
IGH
V
OLTAGE
A
RC
T
RACKING
(
IN
./
MIN
.):
.49-.58
2
4
6
8
12
Shorting
B102
B104
B106-BU
B108
B112-BU
3B102P
3B104P
3B106P
3B108P
3B112P
B102C
B104C
B106C
B108C
B112C
—
—
—
—
—
B102S
B104S
B106S
B108S
B112S
—
—
—
—
—
2B102
2B104
2B106
2B108
2B112
4B102P
4B104P
4B106P
4B108P
4B112P
2
4
6
8
12
E
NVIRONMENTAL
P
ROPERTIES
M
AX
. C
ONTINUOUS
T
EMPERATURE
:
150˚ C (302˚ F)
W
ATER
A
BSORPTION
(24
HRS
. %
WT
.
GAIN
):
.45% per
ASTM D570
C
HEMICAL
R
ESISTANCE
:
Resistant to acids, alkalies,
and aliphatic hydrocarbons and ketones per
ASTM D543
R
ADIATION
R
ESISTANCE
(
ERGS G
-1
(C):
2.7 x 10
8
min
CIRCUITS
STRAP
SCREW
#8 & SMALLER
THREADED
POST
& NUT
NOTES:
For prenumbered marking strip, add suffix “N” to catalog
number. Cannot be used on 3B or 4B series.
For factory assembled hinged cover, add suffix “H” to
catalog number. Cannot be used on 3B or 4B series.
For factory assembled thumbscrew-fastened cover, add
suffix “T” to catalog number. Cannot be used on 3B or 4B
series.
Screws and removable links shipped unassembled.
Removable Link
UL I
NDEPENDENT
T
ESTING
S
ERVICE
R
ECOGNITIONS
:
W
IRE
S
IZES
:
Solid or Stranded, Tubular Clamp
1—#6 AWG, 1—#8 AWG, 1or 2 — #10 AWG,
1or 2—#12 AWG, 1 to 3—#14 AWG, 1 —#10 & 1
—#12 AWG
1 — #12 & 1 — #14 AWG
Strap Clamp
1 — #18 through 1 — #8 AWG
2
4
6
8
12
Stud
5B102
5B104
5B106
5B108
5B112
—
—
—
—
—
—
—
—
—
—
7B102
7B104
7B106
7B108
7B112
2
4
6
8
12
Except for 3B of 4B Series
LR25557
E63810
Thomas & Betts Electronics/OEM Division Tel: 901-252-5000 Fax: 901-252-1312
Dimensions shown are for reference only. Dimensions are in inches.
308
NEMA Terminal Blocks
One Piece Blocks
B100 #B100 SERIES
ONE PIECE BLOCKS — PHENOLIC
ACCESSORIES
COVERS AND MARKING
# OF
CIRCUITS
LAMINATED
PHENOLIC
COVER
SHORTING
BLOCK
COVER
WHITE
MARKING
STRIP
NUMBERED
MARKING
STRIP
Catalog Number
2
4
6
8
12
C102
C104
C106-BU
C108-BU
C112
1
CS102
CS104
CS106
CS108
CS112
1
S102
S104
S106
S108
S112
1
N102
N104
N106
N108
N112
1
Standard Package
JUMPERS
HARDWARE
# OF
CIRCUITS
30A
COPPER
JUMPERS
50A
12 CIRCUIT
JUMPERS
CONNECTING
LINK
LOCK NUTS
SHORTING
SCREW
Catalog Number
2
4
6
8
12
Hardware
J102
J104
J106
J108
J112
—
—
—
—
HJ112
—
—
—
—
—
CL101
—
—
—
—
—
LN101-BU
50
—
—
—
—
—
51-BU
—
Standard Package
1
1
10
LR25557
E63810
Thomas & Betts Electronics/OEM Division Tel: 901-252-5000 Fax: 901-252-1312
Dimensions shown are for reference only. Dimensions are in inches.
309
NEMA Terminal Blocks
One Piece Blocks
B100 #B100 SERIES
ONE PIECE BLOCKS — PHENOLIC
Thomas & Betts Electronics/OEM Division Tel: 901-252-5000 Fax: 901-252-1312
Dimensions shown are for reference only. Dimensions are in inches.
310
NEMA Terminal Blocks
One Piece Blocks
B100 #B100 SERIES
ONE PIECE BLOCKS — PHENOLIC
Thomas & Betts Electronics/OEM Division Tel: 901-252-5000 Fax: 901-252-1312
Dimensions shown are for reference only. Dimensions are in inches.
311
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