Thermocouple
Heads
NB1 / NB2 / NB3 / NB4 / NEPA / NEPB /
NSA / NSB / NSC
NB1
Cast Iron
|
NB4
Aluminum
|
NB2
Burnished Die Cast Aluminum
 |
NSA,
NSB, NSC, Cast Iron
|
NB3
Aluminum
 |
NEPA
and NEPB Explosion Resistant
|
| Dimensions
Shown in mm (in) |
To Order (Specify
Model No.)
| Material |
Type |
Model
No. |
|
Cast
Iron
|
NB1
|
NB1-0
NB1-2
NB1-4
|
|
Burnished
Die Cast Aluminum
|
NB2
|
NB2-0
NB2-2
NB2-4
|
|
Aluminum
|
NB3
|
NB3-0
NB3-2
NB3-4
|
|
Aluminum
|
NB4
|
NB4-0
NB4-2
NB4-4
|
|
Cast
Aluminum Body & Cap
|
NEPA
|
NEPA-0
NEPA-2
NEPA-4
|
|
NEPB
|
NEPB-0
NEPB-2
NEPB-4
|
|
Cast
Iron
|
NSA
|
NSA-0
NSA-2
NSA-4
|
|
NSB
|
NSB-0
NSB-2
NSB-4
|
|
NSC
|
NSC-0
NSC-2
NSC-4
|
CONTINUED
| Model
# |
Terminals |
Wt.
(oz) |
Threaded
Openings |
Features |
| Protection
Tube Entry |
Extension
Wire Entry
|
|
NB1-0
NB1-2
NB1-4
|
0=no
terminal block
2=single element
4=duplex element
max. 14 gage wire
|
22
23
24
|
1/2"
NPT
|
1/2"
NPT
|
•
Rugged construction
• Screw cover with inside thread
• Moisture and dust resistant
• Ideal for outdoor use |
|
NB2-0
NB2-2
NB2-4
|
0=no
terminal block
2=single element
4=duplex element
max. 14 gage wire
|
5
6
6 1/2
|
1/2"
NPT Standard
|
1/2"
NPT w/compression fitting for 1/8" to 1/4"
O.D. wire
|
•
Small and Lightweight
• Good corrosion resistance
• Gasketed, weather resistant
• Burnished finish
• Safety chain on cover |
|
NB3-0
NB3-2
NB3-4
|
0=no
terminal block
2=single element
4=duplex element
max. 14 gage wire
|
8
9 1/4
9 3/4
|
1/2"
NPT
|
1/2"
NPT
|
•
Hinge top |
|
NB4-0
NB4-2
NB4-4
|
0=no
terminal block
2=single element
4=duplex element
max. 14 gage wire
|
2
1/2
3 1/8
3 1/4
|
M10
X 1
|
M15
X .75
|
•
Metric
• Ultra small size
• Good corrosion resistance
• Utilizes miniature barrier strip connector (optional)
|
|
NEPA-0
NEPA-2
NEPA-4
|
0=no
terminal block
2=single element
4=duplex element
max. 14 gage wire
|
16
1/2
17 3/4
18 1/4
|
3/4"
NPT
|
3/4"
NPT
|
•
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) |
|
NEPB-0
NEPB-2
NEPB-4
|
0=no
terminal block
2=single element
4=duplex element
max. 14 gage wire
|
21
1/2
22 3/4
23 1/4
|
1/2"
NPT
|
1/2"
NPT
|
|
NSA-0
NSA-2
NSA-4
|
0=no
terminal block
2=single element
4=duplex element
max. 8 gage wire
|
42
46
48
|
1/2"
NPT
|
3/4"
NPT
|
•
Rugged construction
• Screw cover with inside thread
• Moisture and dust resistant
• Ideal for outdoor use
• Standard NEWPORT® heavy duty head
• Cover equipped with safety chain (readily removed
without tools) |
|
NSB-0
NSB-2
NSB-4
|
0=no
terminal block
2=single element
4=duplex element
max. 8 gage wire
|
40
44
46
|
3/4"
NPT
|
3/4"
NPT
|
|
NSC-0
NSC-2
NSC-4
|
0=no
terminal block
2=single element
4=duplex element
max. 8 gage wire
|
36
40
42
|
1"
NPT
|
3/4"
NPT
|
Terminal Blocks for Connection
Heads
(Order Separately or included with heads with -2 or -4
suffixes)
To Order with Connectors (price for package of 5)
Ceramic Block with Nickel Plated Brass Terminals for NB2
Head. For Gage 14 Wire Maximum
| Model
No. |
Terminals |
Wt.
(oz)
|
|
CH-49
|
2
= single
|
1
1/2
|
|
CH-50
|
4 = duplex
|
2
|
|
|
Ceramic
Blocks with Brass Terminals for Type NSA, NSB, NSC & NBS
Connection Heads for Max. 8 Gage Wire
| Model
No. |
Terminals |
Wt.
(oz)
|
|
CH-47
|
2
= single
|
3
|
|
CH-48
|
4
= duplex
|
4
1/2
|
|
|
Ceramic
Blocks with Brass Terminals for Type NBN, NB3, NBG, NB1,
and NBB Connection Heads for Max. 14 Gage Wire
| Model
No. |
Terminals |
Wt.
(oz)
|
|
CH-73
|
2
= single
|
1
1/4
|
|
CH-74
|
4
= duplex
|
1
3/4
|
*For
NB1 Heads, add suffix “-NB1” to model number; no additional
charge. |
|
| Model
No. |
Terminals |
Material |
Description |
Wt.
(oz)
|
|
CH-83
|
2
|
Ceramic
|
For
NB4
|
1
|
|
CH-84
|
4
|
Ceramic
|
For
NB4
|
1
|
|
CH-76
|
2
|
Bakelite
|
For
NBG, NBN, NB1, NB3
|
2
1/2
|
|
CH-77
|
3
|
Bakelite
|
2
1/2
|
|
CH-78
|
4
|
Bakelite
|
2
1/2
|
†These
are alternatives, not standard with -2 or -4 suffixes on thermocouple
heads
|
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|
|
† All dollar amounts on this site are shown in US currency.
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Part Number Builder |
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Option Descriptions
|
|
(1)
|
Head Type
|
| |
Select
NB1 for cast iron
NB2 for burnished die-cast aluminum
NB3 for flip top aluminum
NB4 for metric miniature aluminum
NEPA for explosion resistant 3/4" NPT fittings
NEPB for explosion resistant 1/2" NPT fittings
NSA for cast iron 1/2 NPT tube fitting
NSB for cast iron 3/4 NPT tube fitting
NSC for cast iron 1 NPT tube fitting
|
(2)
|
Terminal Block Type
|
| |
Select
0 for no terminal block
2 for single element
4 for dual element
|
| NOTE: All combinations may not be valid, check spec sheet for valid part numbers. |
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Keywords:Thermocouple Heads, models NB1, NB4, NB2, NSA, NSB, NSC, NB3, NEPA and NEPB
|
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