AA-SSN Models: Unregulated Incoloy Sheath With Stainless Steel 2-1/2" NPT Screw Plug Immersion Elements

Therm Coil AA-SSN Models

Incoloy Sheath Elements With 2-1/2" NPT Stainless Steel Plug:

If in doubt about which materials are required or best-suited for your application, please contact us at 1-724-872-5007 or rheinhold@thermcoil.com.

  • INCOLOY® Sheath with Stainless Steel Screw Plug (Nickel Brazed or Welded): Our AA-SSN models with 45-55 watt density (W/IN.²) are suitable for clean water and corrosive liquids, such as process water with less than 6% alkaline or acid content; up to 2% caustic solutions.  Also suitable for demineralized or deionized water.

    Unregulated (No thermostat):

    • If you need this type of element but with temperature control, please see our EAA-SSN Models.


    • NEMA 1, General Purpose Enclosure: the default enclosure type.

                ●  Weather-Resistant Enclosures
                ●  Explosion-Resistant Enclosures (Also Dust & Weather-Resistant) 

    General Information:

    • Includes Thermowell: accommodates up to 3/8" DIA. sensing bulb.
    • Screw plug immersion heaters must be fully covered by your liquid to prevent heater failure. (Other medium applications are possible, but require factory consultation.)
    • All 240V models have the option to be operated at 208 VAC with a 25% reduction in wattage rating.

      Technical Specifications

      • Element Sheath Material: Incoloy 800
      • Quantity Of Elements: 3
      • Immersion Length: (C Dim.)
      • Terminal Connections: #10-32 Stud Terminals & Includes (3x) 7" Lead Wires
      • Screw Plug Size: 2-1/2" NPT
      • Screw Plug Material: Stainless Steel
      • Enclosure Type: NEMA 1 General Purpose
      • Thermowell Accommodates Sensing Bulb Size: .375" DIA.
      • Temperature Control Type: None
      • Temperature Control Range: N/A