NEMA Terminal Blocks
Heavy Duty
D
ESCRIPTION
/A
PPLICATION
This compact, heavy duty block line
accepts single or combination wires
up to #4 AWG, solid or stranded. The
compact design allows at least 138
circuits per six foot length to be
mounted. The pitch of this 600 volt
block is 0.50" (center spacing).
200 SERIES
HEAVY DUTY
D
ESIGN
A
DVANTAGES
• Choose from 5 different contact
styles.
• 600 volt UL and NEMA rating.
• Conservatively rated from 50 to 90
amperes per circuit, depending on
which contact style is selected.
• Choose any of three mounting
methods — two way flat base
models surface mount directly to
the panel or snap-on miniature
channel. Dovetail base models
mount on standard channel.
• Packaged for rapid handling and
assembly — snap-fit sections are
packed 10 per carton.
• Only one end section needed per
block assembly.
• Readily identify circuits — mark
directly on block sections or use
removable marking strip. Pre-
printed strips are also available.
LR25557
E63810
Thomas & Betts Electronics/OEM Division Tel: 901-252-5000 Fax: 901-252-1312
275
NEMA Terminal Blocks
Heavy Duty
200 SERIES
HEAVY DUTY
600 V, 0.50" PITCH
CHARACTERISTICS
STRAP SCREW
STRAP CLAMP
TUBULAR SCREW
TUBULAR CLAMP
Type of Block
Direct Mount (Flat Base)
Nylon, Unpainted
Polypropylene
Channel Mount (Dovetail Base)
Nylon, Painted
Polypropylene
Model
241
P241
0241
P0241
Model
248
P248
0248
P0248
Model
242
P242
0242
P0242
Model
243
P243
0243
P0243
Contact Type
Specifications
Wire Range (AWG)
Solid & Stranded
Wire Strip Length (in.)
Screw Type
Ampacity
22-10
—
10-32
slotted binding head
35 A
18-8
1/
2
8-32
pan head
50 A
18-4
1/
2
1/ -28
4
slotted headless
85 A
18-6
1/
2
1/ -28
4
slotted headless
65 A
End Sections
Direct Mount, Nylon
Direct Mount, Polypropylene
Channel Mount, Nylon
Channel Mount, Polypropylene
250
P250
0250
P0250
250
P250
0250
P0250
250
P250
0250
P0250
250
P250
0250
P0250
NOTE:
Standard packaging is 40 pieces for contact and 25 pieces for end sections.
NOTES:
For factory assembled blocks, suffix catalog number with
number of blocks desired. (Maximum number of flat base
preassembled sections is 12).
Example: Ten tubular clamp, dovetail based sections, pre-
assembled on channel = 024310
Example: Twelve polypropylene strap clamp flat base sec-
tions = P24812
For unpainted factory assembled blocks supplied with a
removable marking strip add — 1 to catalog number.
For blocks with two or more different contact sections,
imprinted marking strips, or special features, consult
factory.
Available in special high temperature (70°C) polytherimide
material. To order, suffix catalog number with letters “EHT.”
LR25557
E63810
Comparison (Type of Block)
Direct Mount
(Flat Base)
Channel Mount
(Dovetail Base)
Thomas & Betts Electronics/OEM Division Tel: 901-252-5000 Fax: 901-252-1312
Dimensions shown are for reference only. Dimensions are in inches.
276
NEMA Terminal Blocks
Heavy Duty
CORROSION RESISTANT
STRAP SCREW
CORROSION RESISTANT
TUBULAR SCREW
CORROSION RESISTANT
TUBULAR CLAMP
Model
D241
DP241
D0241
DP0241
Model
D242
DP242
D0242
DP0242
Model
D243
DP243
D0243
DP0243
22-10
—
10-32 Nickel plated
Slotted Binding Head
35 A
18-4
1/
2
1/4-28 Nickel plated
Slotted Headless
85 A
18-4
1/
2
1/4-28 Nickel plated
Slotted Headless
65 A
250
P250
0250
P0250
250
P250
0250
P0250
250
P250
0250
P0250
NOTE:
Standard packaging is 40 pieces for contact and 25 pieces for end sections.
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.
277
NEMA Terminal Blocks
Heavy Duty
200 SERIES
HEAVY DUTY
ACCESSORIES
MOUNTING CHANNEL
MINIATURE
STEEL
CHANNEL
BREAK
AWAY
STEEL
PRE-PUNCHED
ALUMINUM
CHANNEL
ELEVATED
ALUMINUM
CHANNEL
Catalog Number
12
60
63-BU
6 feet
3 feet
60-B-36
64
67
6 feet
3 feet
60-SO
Standard Package
6 feet
3 feet
3 feet
CHANNEL CLAMPS
SCREW
CHANNEL
CLAMPS
UNIVERSAL
CLAMPS
SNAP-IN
CLAMPS
MINIATURE
FOR #12
CHANNEL
SEE-THRU
COVER
GANGING
ROD
Catalog Number
61
100
68
100
62
100
11
100
23-BU
25
30
2 feet
Standard Package
MARKING ACCESSORIES
JUMPERS
PLASTIC
CLOTH
TAPE
PLASTIC
CLOTH
TAPE
VINYL
MARKING
STRIPS
ELEVATED
MARKING
STRIP
NYLON
HOLDING
PLUG
MARKING
PEN
JUMPER
FOR TUBULAR
CONTACTS
SNAP-APART
FOR TUBULAR
CONTACTS
Catalog Number
56
10 sheets
55-BU
50 feet
50-BU
25 feet
52-BU
18 inches
65-BU
100
99-BU
12
42-BU
100
75
12 ckt
Standard Package
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.
278
NEMA Terminal Blocks
Heavy Duty
200 SERIES
HEAVY DUTY
SPECIFICATIONS
V
OLTAGE
R
ATING
:
Blocks meet 600 volt creepage
and clearance requirements of NEMA, UL and
CSA for general industrial control equipment and
panelboards. Withstand voltages greatly in
excess of IEEE switchgear standards for 750
volts.
A
MPACITY
:
For a single #4AWG wire the maximum
amperage recommended is 85 amps.
Polypropylene Housing:
M
ATERIAL
:
Polypropylene; Filled self-extinguishing
M
AX
. C
ONTINUOUS
T
EMPERATURE
:
105ºC (221ºF)
B
REAKDOWN
V
OLTAGE
(AC, 60H
Z
):
Contact to Ground: 7800V
Contact to Contact: 7000V
D
IELECTRIC
S
TRENGTH
(RH40%
AT
S
EA
L
EVEL
):
500 Volts/mil thickness Per ASTM D149
UL H
IGH
V
OLTAGE
A
RC
T
RACKING
(
INCHES
/
MIN
.):
Did not Track
W
ATER
A
BSORPTION
(24
HRS
. %
WT
.
GAIN
):
0.02%
Per ASTM D570
F
LAMMABILITY
:
UL94V-0
C
HEMICAL
R
ESISTANCE
:
Resistant to most acids,
alkalines, and saline solutions. Also resistant to
higher aliphatic solvents and polar substances
per ASTM D543
R
ADIATION
R
ESISTANCE
(
ERGS G
-1 (C)):
No data
Available
C
OLOR
:
Opaque White
Standard Contacts:
M
ATERIAL
:
Electrical grade copper or copper alloy
conductor. Steel Screws plated to resist corro-
sion in most industrial applications
AL-CU T
UBULAR
S
CREW
:
Aluminum compatibility
with aluminum or copper conductors. AL-CU is
tinplated brass.
Environmental Contacts
(for highly corrosive atmospheres)
T
UBULAR
S
CREW
:
Electrical grade copper tube
with nickel plating. Nickel plated brass screws.
S
TRAP
S
CREW
:
Nickel plated brass straps and
screws. Nickel plating exceeds specification QQ-
N-290 Class I, Type VII.
Nylon Housing:
M
ATERIAL
:
Nylon; Unfilled Type 6/6
M
AX
. C
ONTINUOUS
T
EMPERATURE
:
125ºC (257ºF)
B
REAKDOWN
V
OLTAGE
(AC, 60 H
Z
):
Contact to Contact: 7000V
Contact to Ground: 7800V
D
IELECTRIC
S
TRENGTH
(RH40%
AT
S
EA
L
EVEL
):
470-385 Volts/mil thickness Per ASTM D149
UL H
IGH
V
OLTAGE
A
RC
T
RACKING
(
INCHES
/
MIN
.):
.01-.35
W
ATER
A
BSORPTION
(24
HRS
. %
WT
.
GAIN
):
1.5%
F
LAMMABILITY
:
UL94V-2
C
HEMICAL
R
ESISTANCE
:
Resistant to aromatic
hydrocarbons, strong alkalies Per ASTM D543
R
ADIATION
R
ESISTANCE
(
ERGS G
-1 (C)):
8 x 10
7
C
OLOR
:
Translucent White
INDEPENDENT TESTING SERVICE
LISTING AND RECOGNITION
WIRE SIZES, Solid or Stranded Tublar Screw
Tubular Screw
1 #4 AWG, 1 #6 AWG,
1 or 2 #8 AWG, 1 to 4 #10 AWG,
1 or 5 #12 AWG, 1 to 4 #14 AWG,
1 or 6 #16 AWG, 1 to 8 #18 AWG,
AL-CU Tubular Screw
1 #12 AL or CU, 1 #6 AL or CU,
1 or 2 #8 CU, 1 to 4 #10 CU,
1 or 5 #12 CU, 1 to 6 #14 CU,
1 or 6 #16 CU, 1 to 8 #18 CU,
Tubular Clamp
1 #6 AWG, 1 or 2 #8 AWG,
1 to 3 #10 AWG, 1 to 4 #12 AWG,
1 or 4 #14 AWG, 1 to 6 #16 AWG,
1 or 8 #18 AWG
Strap Clamp
1 #18 to 1 #8 AWG
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.
279
京公网安备 11010802033920号
EEWORLD
