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Screw-in heating elements

Definition and general information

For heating liquids or gases; basic design in accordance with DIN EN 44922; also available for freestanding installation

"The most cost-effective way to directly convert solar power into heat."

Our screw-in heating elements are designed, depending on the model, for continuous regulation of the rated power. The required power controller is not included in the delivery and must be provided by the installer of the photovoltaic system.

Technical specifications:
Screw-on flange: stainless steel, brass
Screw thread
1 1/2″ » » » standard, other sizes available
Materials for tubular heating elements:
1.4529, 1.4541, 1.4435, Incoloy 800, Incoloy 825
Tubular heating element diameters:
6.5 mm (standard), 8.5 mm (standard), 10.2 mm, 12.5 mm, 16.0 mm

Available with various protective caps
Available with a regulator, limiter, or regulator/limiter combination
Specific surface power up to 13 W/cm² depending on the design »

Technical data

JSP Insulated Screw-In Heating Elements

  • Layout with overview of types.pdf [LINK: Drawing with overview of types.pdf]
  • JS Wiring Diagram for Insulated Heating Elements.pdf [LINK: JS Schaltplan für isolierte EHK.pdf]
  • Installation Instructions JSP 03_2025.pdf [LINK: •Installation Instructions JSP 03_2025.pdf KNP Screw-in Heating Element]

KNP Screw-In Heating Elements

  • Type Overview.pdf [LINK: Type Overview Drawing.pdf]
  • Overview of reinforced insulation types.pdf [LINK: Drawing: Overview of reinforced insulation types.pdf]
  • Wiring diagram for heating elements with a 3-pole TR_STB.pdf [LINK: Schaltplan für EHK mit 3-poligem TR_STB.pdf]
  • Installation Instructions KN 03_2025.pdf [LINK: Installation Instructions KN 03_2025.pdf] »

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