tubra®-eTherm C

Power to heat

External hydraulic unit with charging temperature control for optimum storage of excess PV electricity

  • Heating output 3 kW (0.8 / 0.8 / 1.4 kW) and 9 kW (3 x 3 kW)
  • Intrinsically safe thanks to STB, pressure monitoring, pump control and power contactor
  • optional reheating function
  • applicable for external energy management systems for thermal storage of PV surplus power
  • optimal layer loading for immediately usable heat
  • Unlike conventional heating elements, the storage capacity is used to its full potential.
  • Hydraulic, thermal supplement for energy management systems from my-PV, Fronius, solaredge, SMA and many others
System eTherm C3+
Power extension eTherm cascade
System eTherm ACTHOR9s cascade
System AC•THOR 9s + eTherm C9+ cascade

Combination of tubra®-eTherm AC•THOR 9s and tubra®-eTherm C9+

  • total thermal output 18 kW.
  • stepless modulating
  • recommended for buffer tanks from 1500 liters
  • PV systems up to 30 kWp, incl. Power electronics

combination of tubra®-eTherm P and tubra®-eTherm C

  • total thermal power 12 kW
  • stepless modulating
  • recommended for buffer tanks from 1500 liters 
  • PV systems up to 30 kWp, incl. sensors and power electronics
  • independent of the inverter or energy management systems
eTherm P u C cascade system house 2026
System eTherm P3+ mit C9+ cascade

combination of tubra®-eTherm C and tubra®-eTherm C

  • Stations can be connected in series
System eTherm ACTHOR9s cascade V2
System eTherm C cascade

For further diagrams, see brochures – Solar Energy for download

Typtubra®-eTherm Ptubra®-eTherm C 3 / 9tubra®-eTherm S
AusführungHeizungswasserHeizungswasserTrink- oder Heizungswasser
Modulation VDE konformJaJaJa
nutzbare Speicherkapazität100 %100 %40 - 80 %
Zieltemperaturregelung zur Speicherschichtungelektronischelektronisch-
Max. Betriebsdruck3 bar3 bar-
max. Speicherladetemperatur80 °C80 °C80 °C
Nennleistung0 - 3 kW (13 A)3 kW (0,8 / 0,8 / 1,4 kW)
9 kW (3 x 3 kW)
0 - 3 kW
Abmessung H x B x T605 x 400 x 240 mm605 x 400 x 240 mm226 x 302 x 84 mm
Elektroanschluss1-phasig
PE 230 V AC 50 / 60 Hz
C 3: 1-phasig / C 9: 3-phasig
PE 230 V AC 50 / 60 Hz
1-phasig
PE 230 V AC 50 / 60 Hz
Messung3-phasig*3-phasig
Erforderlicher
Leiterquerschnitt
2,5 mm²2,5 mm²2,5 mm²
Nenninhalt0,2 l0,2 l-
Gewicht13 kg13 kg9 kg
Heizelement0,1-0,8 kW / 0,8 kW / 1,4 kW0,8 / 0,8 / 1,4 kW / 3 x 3 kW3 kW
max. Durchfluss300 l/h900 l/h-
Restförderhöhe100 mbar100 mbar-
Zieltemperatur30 - 70 °C65 °C-
WasseranschlussG1 AG, Rp 3/4 IGRp 3/4 IGG1 1/2
UmwälzpumpePara 15/7 iPWM2Para 15/7 iPWM2-
Leistungsaufnahme3 - 45 W3 - 45 W< 1 W
MaterialienMessing, Edelstahl, KupferMessing, Edelstahl, Kupfer-
SchnittstellenV-BUS, PWM, S0, 0-10V und potentialfreie Kontakte zur Fernsteuerung und als Kommunikations-
schnittstelle vorbereitet.
Pumpenanschluss 230 VAC Heizungsanschluss 1 / 3-phasig 230VAC 50HzKeine
Product portfolio Power to heat

Power to Heat stations from tuxhorn store energy in heat storage units with significantly higher storage capacities than in batteries. They are used exclusively for heating water by means of electric heating element in the flow-through principle.

eTherm P3+/9+

0 – 3 kW or 0 – 9 kW

eTherm AC•THOR

0 – 9 kW

eTherm S3/9

0 – 3 kW or 0 – 9 kW

eTherm P3+/9+

0 – 3 kW or 0 – 9 kW

eTherm AC•THOR

0 – 9 kW

eTherm SOL•THOR

0 – 3,6 kW

eTherm S3/9

0 – 3 kW or 0 – 9 kW

eTherm P9+

0 – 9 kW (13 A)

see product

eTherm P9+

0 – 9 kW (13 A)