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Terminal Blocks for Connection Heads Thermocouple Heads
To Order
(Specify Model No.)
Model
Price
Material
Type
Number
Each
NB1-0
$23
Cast Iron
NB1
NB1-2
26
NB1-4
28
Burnished
NB2-0
$23
Die-Cast
NB2
NB2-2
26
Aluminum
NB2-4
28
NB3-0
$25
Aluminum
NB3
NB3-2
28
NB3-4
30
Aluminum
NB4
NB4-0
$23
NB4-4
28
NB5-0
$23
Cast Iron
NB5
NB5-2
26
NB5-4
28
NB6-0
$23
Aluminum
NB6
NB6-2
26
NB6-4
28
NB1 Cast Iron
92
(3
5 8
)
86
(3
3 8
)
NB2
Burnished Die Cast Aluminum
NB5 Cast Iron
59
(2
5 16
)
78
(3
1 16
)
95
(3.8)
76
(3)
79
(3
1 8
)
NB3 Aluminum
NB4
Aluminum
110
(4
5 16
)
92
(3
5 8
)
Dimensions: mm (in)
82
(3.2)
67
(2
5 8
)
54
(2
1 8
)
48
(1
7 8
)
86
(3.4)
76
(3)
NB6
Deep Base
82
(3.2)
B-7 Threaded Openings
Wt
Protection
Extension
Terminals
(oz) Tube Entry Wire Entry
Features
0 = no terminal block
22
2 = single element
23
1 2
NPT
1 2
NPT
4 = duplex element
24
max 14-gage wire
0 = no terminal block
5
2 = single element
6
1 2
NPT
1 2
NPT
4 = duplex element
6
1 2
Standard
max 14-gage wire
0 = no terminal block
8
2 = single element
9
1 4
1 2
NPT
1 2
NPT
4 = duplex element
9
3 4
max 14-gage wire
0 = no terminal block
2
1 2
2 = single element
3
1 8
M10 x1
M15 x 0.75
4 = duplex element
3
1 4
max 14-gage wire
0 = no terminal block
56
2 = single element
57
1 2
NPT
1 2
NPT
4 = duplex element
58
max 14-gage wire
0 = no terminal block
8
3 4
2 = single element
9
3 4
1 2
NPT
1 2
NPT
4 = duplex element
10
3 4
max 14-gage wire
Rugged construction
Screw cover with
inside thread
Moisture and dust resistant
Ideal for outdoor use
Standard size
Small and lightweight
Good corrosion resistance
Gasketed, weather resistant
Burnished finish
Safety chain on cover
Medium size
Hinge top
Lightweight aluminum
Standard size
Metric
Miniature size
Good corrosion resistance
Uses miniature barrier
strip connector (optional)
w/compression
fitting for
1 8
to
1 4
" OD wire
Rugged cast iron
High-temperature painted
finish
Safety chain on cover
Standard size
Deep base
Lightweight aluminum
Standard size
Terminal Blocks for
Connection Heads
(Order separately
or included with heads
with -2 or -4 suffixes)
To Order
(Specify Model No.)
Model No. Price Terminals Wt g (oz)
CH-49
$4
2 = single
43 (1
1 2
)
CH-50
6
4 = duplex 57 (2)
Ceramic Block with
Nickel Plated Brass
Terminals for NB2
Head for Gage 14
Wire Maximum
To Order
(Specify Model No.)
Model No. Price Terminals Wt g (oz)
CH-47
$6
2 = single
85 (3)
CH-48
8
4 = duplex 128 (4
1 2
)
Ceramic
Blocks
with Brass
Terminals for
Type NSA,
NSB, NSC, and
NBS Connection
Heads for Max
8-Gage Wire
Bakelite
CH-77
Ceramic
CH-83
Bakelite
CH-76
Bakelite
CH-78
w/compression
fitting
w/compression
fitting
works with
1 8
NPT
w/compression
fitting
Ceramic
CH-84
Ordering Examples: NB1-0, cast iron head with no terminal block, $23.
NB6-2, deep base aluminum head with a 2-terminal terminal block
(for 1 thermocouple element), $26.
B-8
B
All shown smaller than actual size.
MOST POPULAR MODELS HIGHLIGHTED!
Ceramic Blocks with
Brass Terminals
for Type NBN,
NB3, NBG, NXT,
NB1, and NBB
Connection
Heads for Max
14-Gage Wire
*For NB1 heads, add suffix -NB1 to
model number; no additional charge.
To Order
(Specify Model No.)
Model No.* Price Terminals Wt g (oz)
CH-73
$3
2 = single
35 (1
1 4
)
CH-74
5
4 = duplex 50 (1
3 4
)
To Order
(Specify Model No.)
Model Wt
No.
Price Desc
Material Term g (oz)
CH-83
$4 For NB4
Ceramic
2
28 (1)
CH-84
4 For NB4
Ceramic
4
28 (1)
CH-76
4
Bakelite
2
77 (2
1 2
)
CH-77
4
Bakelite
3
77 (2
1 2
)
CH-78
4
Bakelite
4
77 (2
1 2
)
For NBG,
NB5, NB6,
NB7, NB9
and NB12 These are alternatives, not standard with
-2 or -4 suffixes on thermocouple heads. B-9
Thermocouple Heads
To Order
(Specify Model No.)
Model
Price
Material
Type
Number
Each
NB7-0
$23
Aluminum
NB7
NB7-2
26
NB7-4
28
NB8-0
$23
Aluminum
NB8
NB8-2
26
NB8-4
28
Glass
NB9-0
$23
Reinforced
NB9
NB9-2
26
Nylon
NB9-4
28
NB10-0
$23
Bakelite
NB10
NB10-2
26
NB10-4
28
NB11-0
$23
Aluminum
NB11
NB11-2
26
NB11-4
28
NB12-0
$23
Aluminum
NB12
NB12-2
26
NB12-4
28
Cast
NEPA
NEPA-0
$85
Aluminum
NEPA-2
88
Body and
NEPA-4
91
Cap
NEPB-0
$85
NEPB
NEPB-2
88
NEPB-4
91
NSA-0
$22
NSA
NSA-2
25
NSA-4
27
NSB-0
$22
Cast Iron
NSB
NSB-2
25
NSB-4
27
NSC-0
$22
NSC
NSC-2
25
NSC-4
27
Dimensions: mm (in)
NB7 Flip Top
NB8 Domed Top
NB9 Glass Reinforced Nylon
NB10 Miniature Bakelite
NB11 Miniature Aluminum
NB12 Low Profile
76
(3)
93
(3.7)
82
(3.2)
82
(3.2)
87
(3.4)
61.5
(2.4)
66.5
(2.6)
87
(3.4)
70
(2.8)
86
(3.4)
61.5
(2.4)
68
(2.7) B-10
B
Threaded Openings
Wt
Protection
Extension
Terminals
(oz) Tube Entry Wire Entry
Features
0 = no terminal block
8
3 4
2 = single element
9
3 4
1 2
NPT
1 2
NPT
4 = duplex element
10
3 4
max 14-gage wire
0 = no terminal block
8
2 = single element
9
1 2
NPT
1 2
NPT
4 = duplex element
10
max 14-gage wire
0 = no terminal block
5
2 = single element
6
1 2
NPT
1 2
NPT
4 = duplex element
7
max 14-gage wire
0 = no terminal block 2
7 8
2 = single element
3
7 8
1 2
NPT
3 8
NPT
4 = duplex element
4
7 8
max 14-gage wire
0 = no terminal block
4
7 8
2 = single element
5
7 8
1 2
NPT
3 8
NPT
4 = duplex element
6
7 8
max 14-gage wire
0 = no terminal block
9
3 4
2 = single element
10
3 4
1 2
NPT
1 2
NPT
4 = duplex element
11
3 4
max 14-gage wire
0 = no terminal block
16
1 2
3 4
NPT
3 4
NPT
2 = single element
17
3 4
4 = duplex element
18
1 4
max 14-gage wire
1 2
NPT
1 2
NPT
0 = no terminal block
21
1 2
2 = single element
22
3 4
4 = duplex element
23
1 4
max 14-gage wire
0 = no terminal block
42
1 2
NPT
3 4
NPT
2 = single element
46
4 = duplex element
48
max 8-gage wire
0 = no terminal block
40
3 4
NPT
3 4
NPT
2 = single element
44
4 = duplex element
46
max 8-gage wire
0 = no terminal block
36
1 NPT
3 4
NPT
2 = single element
40
4 = duplex element
42
max 8-gage wire
Lightweight aluminum
construction
Flip top
Moisture and dust resistant
Ideal for outdoor use
Standard size
Small and lightweight
Domed top
Gasketed, weather resistant
Secure screw thread
Safety chain on cover
Medium size
Very lightweight construction
Safety chain on cover
Good corrosion resistance
Standard size
Ultra lightweight
construction
Safety chain on cover
High temperature plastic
Miniature size
w/compression
fitting
w/compression
fitting
w/compression
fitting
Miniature size
IP 67 Sealed
Safety chain on cover
Lightweight construction
Miniature size
Low profile
Safety chain on cover
Lightweight construction
Standard size
NSA, NSB, NSC
Cast Iron
86
(3
3 8
)
108
(4
1 4
)
108
(4
1 4
)
NEPA and NEPB
Explosion Resistant
89
(3
1 2
)
92
(3
5 8
)
111
(4
3 8
)
Explosion resistant head*
Rated for: Class III
Class I, Group C, D
Class II, Groups E, F, G
Screw cover
Moisture and dust resistant
Ideal for outdoor use
Utilizes barrier strip
connector (optional)
Rugged construction
Screw cover with inside
thread
Moisture and dust resistant
Ideal for outdoor use
Standard OMEGA
heavy-duty head
Cover equipped with safety
chain (readily removed
without tools)
Standard size
Discount Schedule
1-10 Units . . . . . Net
101 and Up,
11-24 Units . . . . 5%
Consult Sales
25-100 Units . . 10%
Ordering Examples: 1.) NB10-0 is a bakelite head with no terminal block, $23.
2.) NB7-4 is a flip-top aluminum head with a 4-terminal terminal block
(for 2 thermocouple elements), $28.
*Note: The use of explosion resistant heads does not imply that a
complete assembly is either explosion proof or intrinsically safe. It is the
users responsibility to determine suitability of materials for an installation.
NEMA 4X (IP66)
Rated Heads Available.
Please consult our
Technical Quotations
Department
MOST POPULAR MODELS HIGHLIGHTED! B-11
Thermocouple Heads
To Order
(Specify Model No.)
Model
Price
Material
Type
Number
Each
NBN-0
$19
Nylon
NBN
NBN-2
22
NBN-4
24
Bakelite
Glass
NBG-0
$19
Fiber
NBG
NBG-2
22
NBG-4
24
NBB-0
$23
Die-Cast
NBB
NBB-2
26
Aluminum
NBB-4
29
NBS
NBS-0
$25
Cast NBS
NBS-2
29
Aluminum
NBS-4
31
Cast Iron
with
NEP-T
NEP-T0
$75
Aluminum
NEP-T2
77
Cap
NEP-T4
79
NXT-0
$27
Aluminum
NXT
NXT-2
30
NXT-4
32
Feraloy
®
HEP-TX-0
$80
Iron Alloy HEP-TX
HEP-TX-2
83
HEP-TX-4
85
HEP-TX70
85
NBN
Nylon
HEPTX Feraloy
®
Iron Alloy
NBS
Cast Aluminum
NBG Bakelite Glass Fiber
76
(3)
89
(3
1 2
)
76
(3)
76
(3)
111
(4
3 8
)
102
(4)
89
(3
1 2
)
83
(3
1 4
)
108
(4
1 4
)
86
(3
3 8
)
108
(4
1 4
)
133
(5
1 4
)
108
(4
1 4
)
NBB
Die-Cast Aluminum
102
(4)
101
(4)
117
(4
5 8
)
76(3)
NEP-T Cast Iron with Aluminum
Cap Explosion Resistant
Discount Schedule
1-10 Units . . . . . Net
101 and Up,
11-24 Units . . . . 5%
Consult Sales
25-100 Units . . 10%
NXT
Aluminum
108
(4
1 4
)
108
(4
1 4
)
D