Call us at 1-888-826-6342
Thermocouple and RTD Protection Heads
Volume discounts available
Volume Discount Schedule
| Quantity | Price each |
|---|---|
| 1-9 | $55.55 |
| 10-24 | $52.77 |
| 25-99 | $50.00 |
| 100-499 | $47.22 |
| 500-999 | $44.44 |
| 1000+ | $41.66 |
Added to Your Shopping Cart
Configuration complete.
Please add to cart to keep it or exit the configuration
Please add to cart to keep it or exit the configuration
Failed to Save Configurations, Click on Configure Button Start Again
- NB1 - Cast Iron
- NB2 - Burnished Die Cast Aluminum
- NB4 - Miniature Aluminum
- NEPA & NEPB - Explosion Resistant
NB3-4 Model Options
View all modelsEdit these specs to order a different model. Not all combinations are valid. Options compatible with previous selections will be in bold.
*Highlighted options are not compatible. Please select a different combination.
Material
Process Connection
Terminals
Protection Tube Entry
OMEGA offers a wide range of thermocouple heads from cast iron to Feraloy Iron Alloy. ![]()
Note: NEMA 4X rated Heads Available. Please consult our Technical Quotations Department.
| 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.
