Fox ESS HV Junction Box for Parallel Connection of EP Series Batteries
The Fox ESS HV Junction Box (DECO part number FE-JUNBOX-HV, manufacturer model HV-Junction Box-50, supplier part number JUNBOX-HV) is a high voltage battery parallel connection hub designed for the Fox ESS EP range of lithium batteries. This junction box enables up to four EP series batteries to be connected in parallel within a single system, supporting the EP3, EP5-H, EP5, EP6, EP11-H, EP11, and EP12 modules. With a maximum continuous current of 50 A and a peak current of 65 A at 60 seconds, the junction box provides four battery inputs and one load output. IP65 rated for indoor or outdoor installation, it weighs 4.5 kg. Available from DECO Group, a UK solar wholesaler supplying professional installers and trade buyers.
Key Technical Details
- DECO part number: FE-JUNBOX-HV
- Manufacturer model: HV-Junction Box-50
- Supplier part number: JUNBOX-HV
- Product type: High voltage battery parallel junction box
- Maximum parallel battery connections: 4
- Battery inputs: 4
- Load inputs: 1
- Maximum continuous current: 50 A
- Peak current: 65 A at 60 seconds
- Maximum scalable capacity: 46.08 kWh (with 4x EP12 batteries)
- Ingress protection: IP65
- Weight: 4.5 kg
Key Features
- Supports up to 4-way battery parallel connection, allowing connection of battery 2, 3, and 4 in a single system
- Scalable storage capacity up to 46.08 kWh when paired with 4x Fox ESS EP12 batteries
- 50 A maximum continuous current with 65 A peak current rating at 60 seconds
- IP65 rated for both indoor and outdoor installation
- Lightweight at 4.5 kg for straightforward mounting
System Compatibility
- Compatible with Fox ESS EP series high voltage batteries: EP3, EP5-H, EP5, EP6, EP11-H, EP11, and EP12
- This junction box is essential when installing more than one Fox EP battery in a single system
- The junction box connects batteries 2, 3, and 4 in parallel to the first battery in the string
Installation Notes
- IP65 rated, suitable for indoor or outdoor mounting locations
- At 4.5 kg, this is a single-person lift and install
- Required for any Fox ESS EP battery system using more than one battery module
Common Questions
Click a question below to reveal the answer.
Which Fox ESS batteries are compatible with the HV Junction Box?
The junction box is compatible with the full Fox ESS EP high voltage battery range: EP3, EP5-H, EP5, EP6, EP11-H, EP11, and EP12.
What is the maximum storage capacity when using the Fox ESS HV Junction Box?
The junction box supports up to four batteries in parallel, giving a maximum scalable capacity of 46.08 kWh when paired with 4x EP12 batteries.
Is the Fox ESS HV Junction Box required for all multi-battery installations?
Yes. This junction box is essential when installing more than one Fox ESS EP battery in a single system. It provides the parallel connection for batteries 2, 3, and 4.
What are the current ratings of the Fox ESS HV Junction Box?
The junction box supports a maximum continuous current of 50 A and a peak current of 65 A for up to 60 seconds.
DECO Group carries the full range of Fox ESS battery storage accessories alongside EP series battery modules, hybrid inverters, and monitoring equipment. Browse our Fox ESS catalogue for complete residential and commercial storage system components.
About DECO Group
We are a UK solar wholesaler and distributor supplying battery energy storage systems, inverters, and balance-of-system accessories to professional installers and electrical contractors. Our Fox ESS range covers the full EP high voltage battery series alongside junction boxes, communication cables, and compatible hybrid inverter hardware.
