3kW Elektroheizstab - 3 x 230V (bis 500 Liter) - 3kW Heizelement für Solarspeicher, Warmwasserspeicher oder Industrie : Amazon.de: Baumarkt
Electric Heating Rod Heating Cartridge for Continuous Operation 1-9 kW 230/400 V PV Suitable Heating Power Heating Rod 3.0 kW / 230 V : Amazon.de: DIY & Tools