my-PV HEA THOR 3.5 kW Screw-In Heating Element for Hot Water Tanks

For homeowners with photovoltaic systems looking to maximize self-consumption, the my-PV HEA THOR 3.5 kW screw-in heating element turns surplus solar power into hot water. Installed directly into a domestic hot water tank, buffer storage, or heating system, it operates at 230 V AC and delivers up to 3.5 kW of heating power. The element features a G1 1/2" connection thread and an immersion depth of 400 mm, making it compatible with common tank fittings. Its stainless steel construction (1.4571 / AISI 316Ti) ensures high corrosion resistance and long service life.

Key specifications

• Rated power: 3.5 kW (3500 W)
• Operating voltage: 230 V AC, 50/60 Hz
• Connection thread: G1 1/2"
• Immersion depth: 400 mm
• Heating element material: Stainless steel (1.4571 / AISI 316Ti)
• Protection class: IP21
• Max operating temperature: 95 °C
• Max operating pressure: 10 bar
• Stepless power regulation with compatible my-PV devices
• Integrated thermal cut-out for safety

Why choose it

The HEA THOR 3.5 kW is engineered specifically for use with my-PV AC•THOR and AC•THOR 9s power controllers, enabling precise, stepless modulation of heating output based on available PV surplus. This maximizes self-consumption and reduces grid feed-in, lowering energy costs. The robust stainless steel design withstands high temperatures and pressures, ensuring reliable operation in demanding thermal storage applications.

Ideal use cases

• Domestic hot water tanks in residential PV systems
• Buffer storage tanks for heating support
• Integration with my-PV AC•THOR or AC•THOR 9s for PV excess control
• Upgrading existing electric heating elements to smart PV-driven operation

Good to know

The heating element has a total length of approximately 470 mm including the head, and is installed by screwing into the tank fitting. It is suitable for use in closed-loop heating systems with a maximum operating pressure of 10 bar. The integrated thermal cut-out provides additional safety against overheating. For optimal performance, pair with a compatible my-PV power controller to enable stepless power adjustment.