Note:
All part numbers
are RoHS Compliant.
BUCHANAN Terminal Blocks
Table of Contents—NEMA ETB
Overview (Selector Chart) ………………………………………………………………240-243
Catalog Numbering Code ……………………………………………………………………244
Miniature Blocks, 100 Series ……………………………………………………………245-248
Medium Duty, 900 Series/ERT Series (Radiation Resistant) …………………………249-257
Heavy Duty, 200 Series …………………………………………………………………259-266
Heavy Duty, Phenolic, 200 Series ………………………………………………………267-272
Intermediate Heavy Duty, 800 Series …………………………………………………273-276
Ultra Heavy Duty, 400 Series ……………………………………………………………277-279
Fuse & Switch ……………………………………………………………………………281-288
One-Piece Phenolic Blocks ………………………………………………………………289-292
Accessories ……………………………………………………………………………………293
Technical Summary ………………………………………………………………………294-295
UL 1059 Basic Voltage Rating ………………………………………………………………296
6
NEMA Terminal
Blocks
239
Catalog 1308389
Revised 6-07
www.tycoelectronics.com
Dimensions are in millimeters
and inches unless otherwise
specified.
Dimensions are shown for
reference purposes only.
Specifications subject
to change.
USA: 1-800-522-6752
Canada: 1-905-470-4425
Mexico: 01-800-733-8926
C. America: 52-55-1106-0803
South America: 55-11-2103-6000
Hong Kong: 852-2735-1628
Japan: 81-44-844-8013
UK: 8706-080-208
Note:
All part numbers
are RoHS Compliant.
BUCHANAN Terminal Blocks
NEMA ETB Selector Chart
High Density Series 100
Medium Duty Series 900
High
Density
Miniature
High
Density
Single Tier
High
Density
Double Tier
Medium
Duty
Mounting
Direct Mount,
Miniature
Channel
Direct Mount,
Standard &
Breakaway
Channel
Channel only:
Standard &
Breakaway
Direct Mount
Standard, Miniature
& Breakaway
Channels
AWG Wire
Range
Contact Types
R=Shipped
with
screws
raised
B=Shipped
with
screws
bottomed
Ampacity
#30-12
#30-12
Tubular Clamp
#30-12
#22-8
Tubular
Clamp
#22-8
Tubular
Screw
10*, #22-14
Strap
Screw
#22-10
Plug-In
B
B
B
B
28A
300 V
600 V
(Limited
Power Circuits)
.25"
[6.35]
Nylon or
Polypropylene
UL94V-2 or
UL94V-0
125˚C (257˚F) or
105˚C (222˚F)
28A
25A
30A
50A
35A*, 15A
30A
Voltage
Center-to-
Center
Spacing
Housing
Material
Flammability
Rating
Max. Service
Temperature
Pages
600 V
600 V
600 V
600 V
600 V
600 V
.25"
[6.35]
.24"
[6.10]
.375”
[9.53]
.375”
[9.53]
.375”
[9.53]
.375”
[9.53]
Nylon
Nylon
PCT
PCT
PCT
PCT
UL94V-2
UL94V-2
UL94V-0
UL94V-0
UL94V-0
UL94V-0
125˚C (257˚F)
125˚C (257˚F)
150°C (302°F) 150°C (302°F)
150°C (302°F)
150°C (302°F)
246
250
250
250
251
*Acceptable for 35A max. factory wiring only when used with 10AWG wire preterminated with suitable ring tongue terminals.
LR25557
E63810
240
Catalog 1308389
Revised 6-07
www.tycoelectronics.com
Dimensions are in millimeters
and inches unless otherwise
specified.
Dimensions are shown for
reference purposes only.
Specifications subject
to change.
USA: 1-800-522-6752
Canada: 1-905-470-4425
Mexico: 01-800-733-8926
C. America: 52-55-1106-0803
South America: 55-11-2103-6000
Hong Kong: 852-2735-1628
Japan: 81-44-844-8013
UK: 8706-080-208
Note:
All part numbers
are RoHS Compliant.
BUCHANAN Terminal Blocks
NEMA ETB Selector Chart
(Continued)
Medium Duty
Series 900
ERT Series
Heavy Duty Series 200
Medium
Duty
Medium Duty
Radiation Resistant
Nylon or
Polypropylene
NEMA Terminal
Blocks
Mounting
Direct Mount
Standard, Miniature
& Breakaway
Channels
Standard and
Breakaway Channels
Direct Mount
or:
Flat Base fits Miniature Channel.
Dovetail Base fits Standard &
Breakaway Channels
AWG Wire
Range
Contact Types
R=Shipped
with
screws
raised
B=Shipped
with
screws
bottomed
Ampacity
—
Quick
Connect
#18-12
Tubular Quick Connect
Combination
#22-8
Tubular
Clamp
#22-8
Tubular
Screw
#10*, #22-14
Strap
Screw
#18-6
smaller
#18-4
#18-8
#10 &
smaller
Tubular Tubular Strap Strap
Clamp Screw Clamp Screw
6
B
B
B
B
B
B
R
B
B
20A
20A
30A
50A
35A*, 15A
65A
85A
50A
35A
Voltage
Center-to-
Center
Spacing
Housing
Material
Flammability
Rating
Max. Service
Temperature
Pages
250
300 V
600 V
600 V
.375"
[9.53]
.375"
[9.53]
.50"
[12.70]
PCT
RYTON
Nylon or Polypropylene
UL94V-0
UL94V-0
UL94V-2 or UL94V-0
150°C (302°F)
200°C (392°F)
125˚C (257˚F) or
105°C (222°F)
251
252
260-261
LR25557
E63810
241
Catalog 1308389
Revised 6-07
www.tycoelectronics.com
Dimensions are in millimeters
and inches unless otherwise
specified.
Dimensions are shown for
reference purposes only.
Specifications subject
to change.
USA: 1-800-522-6752
Canada: 1-905-470-4425
Mexico: 01-800-733-8926
C. America: 52-55-1106-0803
South America: 55-11-2103-6000
Hong Kong: 852-2735-1628
Japan: 81-44-844-8013
UK: 8706-080-208
Note:
All part numbers
are RoHS Compliant.
BUCHANAN Terminal Blocks
NEMA ETB Selector Chart
(Continued)
Heavy Duty Series 200
Intermediate HD Series 800
Ultra Heavy Duty Series 400
Phenolic
Intermediate
Heavy
Duty
Ultra
Heavy
Duty
Mounting
Direct Mount
or Standard
& Breakaway
Channels
Direct Mount
or Standard &
Breakaway
Channels
Direct Mount
or Standard &
Breakaway
Channels
AWG Wire
Range
Contact Types
R=Shipped
with
screws
raised
B=Shipped
with
screws
bottomed
Ampacity
#18-6
Tubular
Clamp
#18-4
Tubular
Screw
#10 &
smaller
Strap Strap
Clamp Screw
#18-8
#12-1/0
Tubular
Screw
#12-2/0
kcmil (MCM)
Tubular
Screw
Tubular
Screw
B
B
R
B
B
R
R
65A
85A
50A
35A
150A
175A
255A
Voltage
Center-to-
Center
Spacing
Housing
Material
Flammability
Rating
Max. Service
Temperature
Pages
600 V
600 V
600 V
.56"
[14.22]
.75"
[19.05]
1.19"
[30.23]
Phenolic
Nylon
Phenolic
UL94V-1
UL94V-2
UL94V-1
150°C (302°F)
125˚C (257˚F)
150˚C (302˚F)
267-272
273-276
277-279
242
Catalog 1308389
Revised 6-07
www.tycoelectronics.com
Dimensions are in millimeters
and inches unless otherwise
specified.
Dimensions are shown for
reference purposes only.
Specifications subject
to change.
USA: 1-800-522-6752
Canada: 1-905-470-4425
Mexico: 01-800-733-8926
C. America: 52-55-1106-0803
South America: 55-11-2103-6000
Hong Kong: 852-2735-1628
Japan: 81-44-844-8013
UK: 8706-080-208
Note:
All part numbers
are RoHS Compliant.
BUCHANAN Terminal Blocks
NEMA ETB Selector Chart
(Continued)
Fuse and Switch Series 300
One-Piece
Nylon or
Polypropylene
Phenolic
One-Piece
NEMA Terminal
Blocks
Mounting
Direct Mount
or
Standard &
Breakaway
Channels
Direct Mount
or Standard &
Breakaway
Channels
Direct Mount
AWG Wire
Range
Contact Types
R=Shipped
with
screws
raised
B=Shipped
with
screws
bottomed
Ampacity
#18-8
Tubular
Screw
#18-8
Strap
Clamp
#8
Strap
Screw
#18-8
& Smaller
Tubular
Screw
#18-8
Strap
Clamp
#8
& Smaller
Strap
Screw
#6
Tubular
Clamp
#8
Strap
Clamp
#8
Strap
Screw
6
B
B
B
B
B
B
B
B
B
15A Switch
30A Fuse
15A Switch
30A Fuse
70A
50A
50A
Voltage
Center-to-
Center
Spacing
Housing
Material
Flammability
Rating
Max. Service
Temperature
Pages
600 V
600 V
600 V
.75"
[19.05]
Nylon or
Polypropylene
UL94V-2 or
UL94V-0
125˚C (257˚F) or
105°C (222°F)
.75"
[19.05]
.63"
[16.00]
Phenolic
Phenolic
UL94V-1
UL94V-1
150˚C (302˚F)
150˚C (302˚F)
282-285
286-288
289-292
243
Catalog 1308389
Revised 6-07
www.tycoelectronics.com
Dimensions are in millimeters
and inches unless otherwise
specified.
Dimensions are shown for
reference purposes only.
Specifications subject
to change.
USA: 1-800-522-6752
Canada: 1-905-470-4425
Mexico: 01-800-733-8926
C. America: 52-55-1106-0803
South America: 55-11-2103-6000
Hong Kong: 852-2735-1628
Japan: 81-44-844-8013
UK: 8706-080-208
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