APsmart RSD-S-PLC Rapid Shutdown Device

The APsmart RSD-S is a single-module rapid shutdown device for string inverter systems. One RSD-S is installed per panel, providing NEC 2017/2020 module-level rapid shutdown compliance on any string inverter brand without panel-level optimization or monitoring.

Specifications

Key Features

• Lowest-cost path to NEC 2017/2020 rapid shutdown compliance on string inverters
• Compatible with all major string inverter brands
• No optimization function — no energy conversion losses from the device
• One unit per panel with MC4-compatible connections
• Requires APsmart transmitter and compatible string inverter for activation

Compatible With

All string inverter brands. Requires APsmart RSD-S transmitter (sold separately) for system-level rapid shutdown control. Used in the Solar Builder system design with Enphase IQ8 systems.