APsmart RSD-D-446101 (RSD-D-20) Dual-Input Rapid Shutdown Device
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APsmart RSD-D-446101 (RSD-D-20) Dual-Input Rapid Shutdown Device
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What it is, and what it is for
The APsmart RSD-D-446101 (RSD-D-20) is a dual-input rapid shutdown device designed to meet NEC rapid shutdown requirements for photovoltaic systems in the United States. The device maintains normal operation by receiving a continuous heartbeat signal from an APsmart transmitter and automatically initiates rapid shutdown when the transmitter signal is lost. Manual rapid shutdown can also be triggered using the transmitter breaker switch.
Built for rooftop solar installations, the RSD-D-20 supports dual-input module-level shutdown and PLC communication, allowing reliable system monitoring and control. It is designed to operate in harsh outdoor environments and is supplied with MC4 connectors and mounting brackets for straightforward installation in both new and retrofit PV systems.
The RSD-D-20 supports an input operating voltage range of 8–65V per channel, a maximum continuous current of 20A per channel, and output operating voltage of 16–130V. It supports PV systems up to 1500V (UL) and operates across a wide temperature range, making it a dependable safety solution for residential and commercial solar installations in the US.
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| Specification | Details |
|---|---|
| Product Model | APsmart RSD-D-446101 (RSD-D-20) |
| Device Type | Dual-Input Rapid Shutdown Device |
| Rapid Shutdown Compliance | NEC Rapid Shutdown Compliant |
| Number of Input Channels | 2 |
| Input Operating Voltage Range | 8–65V DC per channel |
| Maximum Continuous Input Current | 20A per channel |
| Output Operating Voltage Range | 16–130V DC |
| Maximum System Voltage | 1500V (UL) |
| Communication Method | PLC (Power Line Communication) |
| Enclosure Rating | NEMA Type 6P / IP68 |
| Operating Temperature Range | -40°C to +75°C |
| Connector Type | MC4 Compatible |
| Installation | Module-Level, Rooftop Mount |
| Certifications | UL Listed |
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