Knowledge Search
Download document () of 20
Clear selection
Download selection
Bulgaria Select your location
Submit form in new Tab
We make what matters work*
Submit form in new Tab
Digital
Services
Markets
Support
Company
MyEaton

Favorites

Manage favorites

DC switching

SOL30/SOL30X-Safety solar switch

With Eaton's Moeller series™ fireman's switches, the sun’s energy can be safely and efficiently harnessed. In the event of a fire, DC voltages of up to 1,000 V often continue to be present on the modules and the cables, even after the inverter has been enabled, making it almost impossible for firefighters to do their job. Fireman’s switches ensure the safety of firefighters by making it possible to disconnect the cables leading from the solar modules to the inverter at the touch of a button, either on site or via the local power utility.
Contact sales
Automatic:
undervoltage releases
Temperature range:
-25 °C to +60 °C

Core features

  • Pre-wired for connection
  • Utilization category: DC-21A
  • Rated operational current of each switch-disconnector: 30 A
  • Signaling of switch states via auxiliary contacts (1 N/O and 1 N/C)
  • Various connector types are available: MC4 or metric cable glands
  • Internal resistance of each switch-disconnector: 7 mΩ
  • Pressure compensation plug
  • Rated operational voltage: 1,000 V
  • Remote tripping with integrated undervoltage release: 230 V, 50 Hz
  • Rated operational current Ie: 30 A

De-energised at the touch of a button

The fireman’s switch must be installed along the DC cable in the immediate vicinity of the PV modules. As soon as the location of the fire has been disconnected from the local power supply, or the PV system has been deactivated locally, the undervoltage release in the fireman’s switch will automatically switch off the PV modules.

SOL30-Safety

For small photovoltaic systems with one or two identical strings, the basic version of Eaton's proven fireman’s switch is ideal. With a current carrying capacity of 30 A at 1,000 V DC, it can safely switch all standard module types.

SOL30X-Safety

For photovoltaic systems consisting of several strings, Eaton offers pre-wired fireman's switches that combine 2, 3, 4 or 6 switch-disconnectors inside a single enclosure. In contrast to generator junction boxes, the individual strings are not connected in parallel, but can be separately connected to the inverter. This enables the use of multiple MPP trackers and helps to optimise the performance of the inverter.

Simple and protected

The fireman's switches are available with metric cable glands or MC4 sockets. For devices with metric cable glands, all cables connect via terminal blocks. As a result, installing the devices is quick and simple. The IP65 enclosure and the pressure compensation plug make the fireman’s switches ideal for outdoor use.
Specifications

Results
Sort by:
Clear filters Generate saved search link

Filters

Filters
Compare products ()
Clear Selection

Compare
Try another search

Your search "" did not match any documents or products.

< Back
Highlight differences
Show only differences
Hide blank features
Download Links
Contact Tech Support
Phone Technical Support
+359 2 884 477 015
Terms & Conditions
Eaton is an intelligent power management company dedicated to improving the quality of life and protecting the environment for people everywhere. We are guided by our commitment to do business right, to operate sustainably and to help our customers manage power ─ today and well into the future. By capitalizing on the global growth trends of electrification and digitalization, we’re accelerating the planet’s transition to renewable energy and helping to solve the world’s most urgent power management challenges.
Company
Quick links
© 2026 Eaton. All Rights Reserved.