S Models: Unregulated Steel Sheath With Steel 2" NPT Screw Plug Immersion Elements

Therm Coil S Models

Steel Sheath Elements With 2" NPT Steel Plug:

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

  • Steel Sheath with Steel Screw Plug (Nickel Brazed or Welded): Our S models with 20-23 watt density (W/IN.²) are for use in lightweight oils.

Unregulated (No thermostat):

  • If you need this type of element but with temperature control, please see our ES 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: Steel
  • Quantity Of Elements: 3
  • Electrical Phasing: 3 (Three-Phase)
  • Immersion Length: (C Dim.) ±1/4"
  • Watt Density: 20 - 23 W/IN.²
  • Terminal Connections: #10-32 Stud Terminals & Includes (3x) 7" Lead Wires
  • Screw Plug Size: 2" NPT
  • Screw Plug Material: Steel
  • Enclosure Type: NEMA 1 General Purpose
  • Thermowell Accommodates Sensing Bulb Size: 3/8" DIA.
  • Temperature Control Type: None
  • Temperature Control Range: N/A