What the Sync Energy EVAB1D is

Sync Energy EVAB1D is a dynamic EV load balancer hub designed for DIN rail mounting in an existing electrical panel or suitable enclosure. Unlike the enclosed kit versions, it is supplied as the balancer module only, which makes it the most flexible format in the range for bespoke electrical layouts. Its role is to monitor available site capacity, communicate with compatible Sync Energy chargers, and adjust charging output so the total load remains within the configured limit.

That makes it a control product rather than a charger. It is there to improve how a multi-charger installation behaves when other building loads rise and fall throughout the day.

Who it suits

EVAB1D suits projects where the installer wants the Sync Energy balancing function without the fixed enclosure format of the single-phase or three-phase kit products. It is well suited to panel-board integration, custom electrical assemblies, and charger installations where the supporting CT or metering arrangement will be selected separately.

That can make it useful for commercial jobs, managed residential parking, and technically planned domestic installs where more than one compatible charger is involved and the electrical design is being built around a specific board layout. It can also suit retrofit work where there is already a suitable enclosure space available and a separate boxed balancer would add little value.

Key features and practical benefits

• DIN rail mounted balancer hub for existing panel integration.
• Supports up to 16 compatible Sync Energy chargers per unit.
• Local balancing operation without reliance on a permanent yearly subscription.
• RS485 communication to chargers.
• 2% Class C equivalent internal meter accuracy with option for external RS485 Modbus meter connection.
• Designed for use with separately selected CT or metering arrangements.

The main practical benefit is installation freedom. Some jobs are better served by a pre-boxed kit. Others are cleaner if the intelligence sits inside the existing panel architecture. EVAB1D addresses the second case. It allows the balancing function to be incorporated into the wider electrical design rather than added beside it as a separate enclosure.

It also helps with future scalability. Because one balancer can support up to 16 chargers, an installer can design the panel arrangement with growth in mind and avoid a piecemeal approach later.

Technical detail that matters in practice

The published specification describes EVAB1D as the balancer-only option for existing DIN rail mounting. It takes a single-phase 220 to 240V, 50 to 60Hz supply and communicates with compatible chargers using RS485. The published data also notes over-current and fault protection, Bluetooth support for setup, RGB LED and buzzer indication, and an operating temperature range of -25°C to +40°C.

The product is IP20 rated, which means it should be housed in an appropriate internal electrical environment rather than treated as a weatherproof exposed device. That is consistent with its role as a DIN rail module rather than a finished outdoor accessory.

Another important practical point is that accessories are sold separately for this variant. The enclosed EVAB1ESP120 and EVAB1ETP400 kits include their relevant CT clamps. EVAB1D does not. That is not a drawback if the job calls for flexibility, but it does mean the installer needs to specify the supporting sensing arrangement correctly.

Installation and compatibility considerations

Because EVAB1D is intended for DIN rail integration, it is best suited to projects with a planned electrical layout and a competent installer who wants control over the final assembly. The designer needs to account for the module position, the CT or metering method, the communications route to chargers, and the configured current limit for the site.

That extra freedom is the product’s strength, but it also means it is less of a plug-and-place choice than the enclosed kits. On a straightforward single-phase or three-phase job where the matching kit format is acceptable, the enclosed alternatives may be faster to specify. Where the board layout or enclosure strategy is bespoke, EVAB1D becomes the more logical answer.

For installers who need a boxed single-phase solution, the EVAB1ESP120 kit is the direct alternative. For enclosed three-phase balancing, the matching option is the EVAB1ETP400 kit. Compatible charger ranges can be explored through home EV chargers and commercial EV chargers.

Why this variant may be the right choice

EVAB1D is the right choice when the job needs the balancing function but not the enclosure. That may be because the project already includes a suitable panel space, because the installer wants a tailored metering arrangement, or because a custom control assembly is being built for a multi-charger site.

It is also the more adaptable product where future modification is likely. A carefully planned DIN rail solution can make later changes easier than retrofitting separate boxed accessories once the charger estate grows. For technically led projects, that flexibility can be more valuable than the convenience of a pre-packaged enclosure.

In short, the enclosed kits are the simpler answer where their format matches the job. EVAB1D is the more configurable answer where the electrical design needs more control.

FAQ

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