About This Product

The Sungrow Residential Battery Combiner Box For SBR Battery is a Sungrow SJR-04 combiner box used when multiple Sungrow SBR high-voltage battery stacks need to be connected in parallel. It provides a central connection point between compatible SBR battery towers and the Sungrow hybrid inverter, helping keep the battery cabling neat, protected and installer-friendly.

This unit is designed for residential Sungrow battery systems and supports up to four equal SBR battery towers in parallel. It includes protected positive and negative battery inputs and waterproof plug-in style terminals for a cleaner installation.

Who This Product Suits

This product suits installers building or expanding a Sungrow SBR battery system where more than one SBR battery stack is required. It is most relevant for residential battery installations that need additional storage capacity beyond a single battery tower.

It is intended for use with compatible Sungrow SBR high-voltage batteries and Sungrow residential hybrid inverter systems. It should be selected and installed by a licensed solar or electrical professional as part of a correctly designed battery system.

Specifications Explained

The SJR-04 combiner box allows up to four equal Sungrow SBR battery towers to be connected in parallel. This gives installers a practical way to combine multiple battery stacks into one compatible battery input arrangement for the inverter.

It is rated for high-voltage DC battery operation, with a maximum working voltage of 600 V DC and a maximum working current of 30 A. The enclosure has an IP65 protection rating, making it suitable for protected outdoor or utility-area installations when installed according to Sungrow requirements.

Each positive and negative battery input is fuse protected to help reduce short-circuit risk, and the waterproof terminals support a plug-and-play style connection process. The combiner box also includes PE earthing connection points as part of the battery system wiring.

Summary

The Sungrow Residential Battery Combiner Box For SBR Battery is a purpose-built accessory for paralleling multiple Sungrow SBR battery towers. It is used where the battery system needs more storage capacity than a single SBR stack can provide.

For installers, the main value is that it provides a tidy, protected and Sungrow-approved connection method for multi-stack SBR battery systems. It is a system component rather than a standalone battery product, so compatibility with the inverter, battery towers and site design should always be checked before installation.

Further Information From The Manufacturer

The Sungrow Residential Battery Combiner Box For SBR Battery by Sungrow is a compact and efficient solution for residential battery systems. The Sungrow SJR-04 features a small size and light weight, making it easier for handling and wall mounting. It also offers convenient and efficient installation with all waterproof terminals adopting a plug and play design. Additionally, the Sungrow SJR-04 prioritizes safety with all positive and negative inputs protected by fuses against short circuit failure. The product also offers flexibility, allowing a maximum of 4 batteries to be connected in parallel to meet various capacity requirements.

Key Features

• Light and Handy: Small size and light weight, easier for handling and wall mounting
• Convenient: All waterproof terminals are plug and play design, convenient and efficient
• Safe: All positive and negative inputs adopt fuses to protect against short circuit failure
• Flexible: Maximum 4 batteries connected in parallel to meet various capacity requirements

Main Benefits

• Easy Installation: The Sungrow SJR-04 offers convenient and efficient installation with plug and play design
• Enhanced Safety: The product prioritizes safety with all positive and negative inputs protected by fuses against short circuit failure
• Flexible Capacity: The Sungrow SJR-04 allows a maximum of 4 batteries to be connected in parallel to meet various capacity requirements
• Space-Saving: The small size and light weight of the Sungrow SJR-04 make it ideal for wall mounting and handling

Weights & Measurements Information

About Sungrow

Sungrow Power Supply Co., Ltd. was founded in 1997 and is headquartered in Hefei, China. The company is one of the world’s largest manufacturers of solar inverters and energy storage systems, supplying residential, commercial and utility-scale markets globally. Sungrow is known for its hybrid inverters, battery systems and large-scale energy storage solutions, with a strong focus on R&D and grid-compliant technology. In Australia, Sungrow has an established local presence and is widely used across residential and commercial solar installations.