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Thermocouple Heads and Terminal Blocks
NB, NEP NS and CH Series

Thermocouple Heads, models NB1, NB2, NB3, NB4, NSA, NSB, NSC, NB3, NEPA and NEPB Terminal Blocks CH
NB1 - Cast Iron
NB2 - Burnished Die Cast Aluminum
NB4 - Miniature Aluminum
NEPA & NEPB - Explosion Resistant
NSA, NSB & NSC - Cast Iron
NEP-T - Cast Iron with Aluminum Cap Exposion Resistant
HEP-TX - Feraloy Iron Alloy




NEWPORT offers a wide range of thermocouple heads from cast iron to Feraloy Iron Alloy.
Material Type Model No. Terminals Wt.
(oz)
Threaded Openings Features
Protection
Tube Entry
Extension
Wire Entry
Cast Iron NB1 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
Burnished
Die Cast
Aluminum
NB2 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
Cast
Aluminum
Body and
Cap
NEPA 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
* Safety Ideal for outdoor use
* Safety Utilizes barrier strip connector (optional)
NEPB 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
Cast
Iron
NSA 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 OMEGA®
 heavy duty head
* Cover equipped with safety
 chain (readily removed
 without tools)
NSB 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 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
Cast Iron
with
Aluminum
Cap
NEP-T NEP-T0
NEP-T2
NEP-T4
0 = no terminal block
2 = single element
4 = duplex element

max. 14 gage wire
75
76
76
1/2" NPT 1/2" NPT * Explosion resistant head
* Rated for
 Class I, Group C, D
 Class II, Groups E, F, G
 Class III
* Screw cover with inside thread
* Moisture and dust resistant
* Ideal for outdoor use
* Utilizes barrier strip
 connector (optional)
Feraloy
with
Iron
Alloy
HEP-TX HEP-TX-0
HEP-TX-2
HEP-TX-4
HEP-TX-70
0 = no terminal block
2 = single element
4 = duplex element
70 = for mounting
TX70 Transmitter
max. 14 gage wire
62
64
64
66
1" NPT
3/4" NPT
1" NPT
3/4" NPT
* Explosion resistant head
for 2-wire transmitter
* Rated for
 Class I,
 Div 1&2, Groups C, D
 Class III
Class II, Div 1
Groups E, F, G, Class III
* Moisture and dust resistant
* Ideal for outdoor use
* Utilizes barrier strip
 connector (optional)

Note: NEMA 4X rated Heads Available. Please consult our Technical Quotations Department.


Examples Shown Below - Order ANY Model in the Order by Part Number Table at the Bottom
 Part Number   Availability   Price    Description   
 NB1-0 in-stock    $25.38     Cast Iron - No Terminal Block  
 NB1-2 2 Weeks    $28.65     Cast Iron - Single Element Terminal Block  
 NB1-4 2 Weeks    $30.91     Cast Iron - Dual Element Terminal Block  
 Terminal Blocks
 CH-47 in-stock    $6.88     2-terminal ceramic, for NSA, NSB, NSC, NBS head  
 CH-48 in-stock    $9.19     4-terminal ceramic, for NSA, NSB, NSC, NBS head  
 CH-49 2 Weeks    $4.62     2-terminal ceramic, for NB2 head  
 CH-50 in-stock    $6.88     4-terminal ceramic, for NB2 head  
 CH-73 in-stock    $3.52     2-terminal ceramic, for NBN, NB3, NBG, NB1, NBB head  
 CH-74 2 Weeks    $5.78     4-terminal ceramic, for NBN, NB3, NBG, NB1, NBB head  
 CH-76 1 Week    $4.62     2-terminal, bakelite, for NBN, NB3, NBG, NB1 head  
 CH-77 in-stock    $4.62     3-terminal, bakelite, for NBN, NB3, NBG, NB1 head  
 CH-78 2 Weeks    $4.62     4-terminal, bakelite, for NBN, NB3, NBG, NB1 head  
 CH-83 2 Weeks    $4.62     2-terminal, ceramic, for NB4 head  
 CH-84 in-stock    $4.62     4-terminal, ceramic, for NB4 head  
 
All dollar amounts on this site are shown in US currency.

 Part Number Builder
(1) (2)
-
-
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.


   
Keywords: Thermocouple Heads, models NB1, NB2, NB3, NB4, NSA, NSB, NSC, NB3, NEPA and NEPB Terminal Blocks CH

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