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Available in 15, 20, 30, 40, 50, and 60A, these 2-pole smart breakers feature load control, revenue-grade metering (±0.5%) and GFCI protection. A maximum of 8 breakers can be used per Lunar System, and can be installed inside the Lunar Bridge or any BR-style Eaten panels. Smart Breaker Configuration

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Communication Range

Smart breakers communicate wirelessly with the Lunar Bridge or Lunar Meter Socket Adapter Controller (MSA Controller). They can be installed inside the Lunar Bridge or in any compatible EATON subpanel with maximum distances as detailed below:

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AC-Coupled PV Requirements

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AC PV Metering

Smart breaker acts as a metering device for AC PV. No additional CT for PV circuits.
Rogowski coils may still be required to monitor site import and export for partial home backup (i.e. AC PV in non-backup).

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Line Side Tap

Install breaker between fused disconnect and AC PV, by following these steps:
  1. Turning the fused disconnect OFF.
  2. Splicing the inverter output wires inside the inverter enclosure.
  3. Splicing there and back to an adjacent 2-space subpanel with a smart breaker.
Utility coordinated disconnect is not required. It does not touch or modify the tap, nor touch the wires between the tap and the fused disconnect.

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Wiring Smart Breakers

Smart Breaker Wiring Diagram
To avoid nuisance GFCI tripping, connect the load neutral wire directly to the breaker and the breaker’s neutral pigtail to the neutral bar.