
Customized connection boxes for AC, battery, and PV applications
Customized connection boxes for AC, battery, and PV applications
Individually developed connection solutions for industrial energy and photovoltaic applications – manufactured according to customer requirements for maximum safety, clean integration, and reliable operation.
Not every application can be solved with standard products. That is why Q3 ENERGIE develops and manufactures customized connection boxes for AC, battery, and PV applications – precisely tailored to the technical requirements of the project.
The solutions shown here were specifically designed for industrial applications in 19″ enclosures and combine a compact design with high connection flexibility, integrated protection, and professional DC or AC connection technology.
AC connection box
PV battery connection box
PV connection box
| Project data | |
|---|---|
| Application | Customized connection boxes |
| Area of application | AC connection technology, battery storage, photovoltaics |
| Technology | ■ AC connection box ■ Customized connection technology |
| Special features | ■ Customized connections ■ Integrated fuses ■ Surge protection ■ Industrial design in 19″ enclosure |






AC connection box 50 A
This AC connection box was developed for applications with inverters, load, and backup. Entry is via M25 cable glands for 10 mm² cables. Additionally, the box features busbars for grid and load applications as well as pluggable connections based on Weidmüller PV BSS VAPM 5PM mating connectors.
Technical features
■ 50A AC connection box
■ 19″ industrial enclosure
■ Entry for inverter, load, and backup
■ 3 connections for 10 mm² cables
■ M25 cable glands
■ Busbars for grid & load
■ Connector systems based on Weidmüller
PE/PA
■ M8 connection bolts
Battery connection box 500 A
Q3 ENERGIE developed this compact 500A DC connection box in 19″ format for high-performance battery systems. The design combines solid copper bars with integrated fine fuses and powerful DC protection for industrial storage applications.
Technical features
■ 500A battery connection box
■ 19″ enclosure
■ Entry via M32 cable gland
■ Connection via M8 bolts
■ 2 × fuse EF33250220
■ 2 × fuse EF33150220
■ 2-pole battery connection
■ Battery poles protected with 1A 5×20
■ Fine fuse
■ Tinned 30×10 mm copper bar
■ M8 PE bolt
PV connection box for 6 MPPTs
This PV connection box was specifically developed for applications with six MPPT inputs. Connections are made via proven MC4 EVO2 connectors. Additionally, an integrated Type 1+2 surge protection device reliably protects the connected equipment from transient overvoltages.
Technical features
■ PV connection box for 6 MPPTs
■ 19″ enclosure
■ MC4 EVO2 connections
■ Input and output via Stäubli MC4 EVO2
■ Type 1+2 surge protection
■ Integrated remote signaling contact
■ Grounding via M8 bolts