- PV Grid Connected
- PV Off Grid | Battery Chargers
- Solar Thermal
Solar thermal systems
Solar thermal systems convert solar irradiation into heat so that it can be used to heat domestic hot water or for back-up heating.more
The Steca TR 0301 U controller was specially developed for the North American market based on the Steca TR 0301 basic controller. With its special certification (ETL label) from a Nationally Recognized Testing Laboratory (NRTL) in the US, the controller meets the safety standards and minimum requirements of the North American market.
A feature of the Steca TR 0301 series of controllers is the animated graphic display, which offers a complete visualisation of the solar energy system's operating status and solar circuit.
The clearly arranged display ensures easy operation using pictograms. The controller was jointly designed with an internationally renowned design centre. The controller is used for monitoring and controlling solar thermal systems with one collector array and one storage tank. In addition, the controller performs important system monitoring and safety functions to ensure safe and long-lasting operation of the entire system. The numerous additional functions of the Steca TR 0301 U also include a maximum storage tank temperature function, a tube collector function, an anti-freeze function, a holiday and storage recool function as well as a choice of temperature indications in either degrees Celsius (°C) or Fahrenheit (°F). The operational safety of the system is supported by a sophisticated fault diagnosis. The multi-coloured LCD backlighting ensures quick and safe location of occurring errors and facilitates quick troubleshooting.
The Steca TR 0301 U controller is supplied with a pre-fitted US mains connection cable and a preinstalled, pluggable pump output.
|TR 0301 U|
120 V AC, 60 Hz
|System voltage optional|
240 V AC, 60 Hz
1.07 W [0.001 HP]
|Temperature control class|
|Number of inputs|
3 x temperature (Pt1000)
|Number of outputs|
1 x switch output relay (R1), max. 400 W / 0.5 HP (120 V AC) or 800 W / 1 HP (240 V AC)
75 inch, 3 x 18 AWG at 221 °F
|Turn-on temperature difference|
|Turn-off temperature difference|
0 °C [+32 °F] … +45 °C [+113 °F]
|Degree of protection|
IP 20 / DIN 40050
|Dimensions (X x Y x Z)|
160 x 157 x 47 mm [6.30 x 6.18 x 1.85 inch]
350 g [12.35 oz]
|Temperature sensors 2 x Pt1000|
1.5 m [59 inch] silicone cable without bushing (measuring range up to +180 °C [+356 °F])