Stringbox Easy Duo/Trio Channel

Connection technology PV generator junction box GAK Stringbox Easy Duo/Trio Channel



Stringbox Easy Duo/Trio Channel


For larger thin-film systems and systems with crystalline modules

  • Extremely compact and lightweight
  • Quick installation without clamps
  • Flexible fuse protection via fuses and/or diodes
  • Can be equipped with many options (e.g. ÜSS)


Areas of application
Small to medium-sized string combinations with crystalline modules with a maximum total output current of up to 90 A. Thin-film systems of all types in which the string combinations do not exceed an output current of 90 A.

Basic structure

The Stringbox Easy Duo/Trio Channel is a clever variant which, if it can be used, significantly reduces the costs for the box and installation! There is a wide range of possible applications for this variant. The highlight is that we galvanically isolate the circuit boards internally, enabling two or three different MPP trackers or inverters to be started up with just one box.

String boxes and generator connection box from Q3

Our generator junction boxes ensure a high level of safety during installation and guarantee clean and clear wiring (wiring) of PV modules on the roof or in the open field. Several strings often have to be connected in parallel in order to transport suitable power to the inverter at reasonable system voltages. The individual strings are connected directly to the modules in the string box and connected to the inverter input with just two cables (plus and minus). Each generator connection box contains a pressure equalization element as standard for effective protection against condensation.

Generator connection box PV connection technology GAK Stringbox Duo Channel
PV Stringbox Easy generator connection box with fuses and overvoltage protection
PV Stringbox Easy generator junction box with overvoltage protection

Technische Daten Stringbox Easy


Anzahl der Strings4 bis 18
I max. pro String8 A
U max. pro String1 kV
KontaktierungH4/MC4 DC Stecker
Stecker Kabelquerschnitt2,5 bis 6 mm²


Anzahl der Ausgänge1-2
I max. pro String90 A
U max. pro String1 kV
KontaktierungH4/MC4 DC Stecker
Stecker Kabelquerschnitt4 bis 6 mm²


Maximale Leistung90 kW
StringabsicherungPV Fuse/Diode, Plus- und/oder Minuspol möglich
GehäuseUV-beständig, IP65, Belüftungsmembran unten
Abmessungen (in mm, LxBxH)je nach Ausführung z.B. 400x300x132 oder 600x300x132


DC Freischalter
Überspannungsschutz T1+T2/T2

Our portfolio in the field of connection technology, string boxes, generator connection boxes (GAK)

Stringbox Simple

Extremely low profile, up to 5 inputs

Stringbox Easy

Extremely compact, up to 18 inputs

Stringbox Duo/Trio Channel with galvanically isolated circuit boards

Duo/Trio channel

Stringbox with galvanically isolated circuit boards

Stringbox BIG

Generator connection box for large systems/parks

AC sub-distribution board

Customer-specific variant with ÜSS T1+T2

Special boxes

cost-optimized - benefit-optimized

Generator connection box "large"

with overvoltage protection

Generator connection box "small"

with overvoltage protection