Ideal Basic Protection for Small PV Plants with a Single Inverter

Solar-Log 250

Solar-Log 250

The Solar-Log 250 is the ideal basic protection for small PV plants with a single inverter. It is well suited for the retrofitting of existing photovoltaic plants and provides simple, affordable and expert plant monitoring of PV plants with a maximum size of 10 kWp.

StandardArticle number
Solar-Log 250255869

Solar-Log 250 Data sheet
Solar-Log™ Product Portfolio
Solar-Log™ Manual

Solar-Log™ Smart Energy

Self-consumption can be measured and displayed as a graph with a energy meter.

Solar-Log WEB Enerest™

The Solar-Log WEB Enerest™ online portal expands the presentation and monitoring functions of the Solar-Log™.

The App - Solar-Log WEB Enerest™

This free app offers users comfort and security with its structured operating concept, intuitive controls, modern features and interactive graphics.


Solar-Log WEB Enerest™

Fit for the future  with Solar-Log WEB Enerest™ – central control element for installers and service providers.  The Solar-Log WEB Enerest™ is available in three different service levels and price classes to respond even better to the differing needs of individual customer groups.  The M, L and XL editions make it possible to find the perfect fit for the needs of the plant owner and to offer the most optimal service.  The system provides banks and investors reliable protection and professional monitoring for PV investments.



Maximum plant size 10 kWp with a single inverter


The inverter can be connected via RS485/422 or an Ethernet connection. A meter can be set up as an inverter via the S0 interface and records the output from incompatible inverters.

Additions for New Functions

Solar-Log™ Components

A number of components are available for the Solar-Log™ devices to offer extra protection, new functions and / or improved performance. From overvoltage protection to connecting diverse inverters or sensors, we can meet all your needs. Installers, dealers and service providers can offer their customers complete solutions with high-quality products.

Technical Data

Model Comparison

Solar-Log™ devices are the most accurate and reliable data loggers on the market that can be tailored to the particular needs of your customers. Our goal: more performance, more efficiency and more success for every photovoltaic plant.

Solar-Log 250
Solar-Log 300
Solar-Log 1200
Solar-Log 1900
Solar-Log 2000

At a glance

Supported components

Important data and compatibility of the Solar-LogTM models at a glance. Here you can find the right Solar-LogTM for your component.

Do you need a list of all supported components by a specific manufacturer?
Simply enter the name of the manufacturer in the search field and click on the magnifier.



Brochures, Technical Documents and the Latest Firmware Version Available for Free Download