APsmart RSD-D-20 20A 1500V Receiver, 446101

APsmart RSD-D-20 20A 1500V Receiver (446101) – Dual-Input Rapid Shutdown Device

The APsmart RSD-D-20 20A 1500V Receiver (model 446101) is a high-current, dual-input (duo) module-level rapid shutdown device (RSD) designed for larger residential and commercial solar PV systems. It provides reliable NEC-compliant safety by reducing PV source circuit voltage to safe levels (under 30V) within 30 seconds during an emergency shutdown.

This dual-channel PLC rapid shutdown receiver supports up to 20A per channel (40A total), making it ideal for higher-power modules and strings. It communicates via Power Line Communication (PLC) with the APsmart Transmitter, continuously monitoring the “heartbeat” signal. When the signal is lost, the RSD-D-20 instantly initiates rapid shutdown. It also allows manual shutdown via the transmitter breaker switch.

Key Features & Benefits

• NEC 690.12 Rapid Shutdown Compliance — Fully meets the latest NEC 2017, 2020, and 2023 requirements for module-level rapid shutdown.
• Dual-Input High-Current Design — 20A continuous per channel supports larger solar modules and reduces the number of RSD units needed per array.
• SunSpec Certified PLC Communication — Reliable heartbeat signaling ensures dependable operation and easy integration with compatible inverters.
• Simplified Installation — Plug-and-play with Stäubli MC4 connectors, 0.5 m (500 mm) input cables, and 2.4 m (2400 mm) output cables for flexible module pairing.
• Rugged Outdoor Durability — IP68 / NEMA Type 6P enclosure with over-temperature protection, built to withstand harsh conditions from -40°F to +167°F (-40°C to +75°C).
• Cost-Effective Safety Solution — Minimizes wiring complexity while delivering module-level protection and fire risk reduction.

Technical Specifications

• Model: RSD-D-20 (446101)
• Input Operating Voltage Range: 8–65 V DC per channel
• Maximum Continuous Input Current (Imax): 20 A per channel
• Maximum Short Circuit Current (Isc): 25 A per channel
• Maximum Continuous Output Current: 20 A per channel
• Maximum System Voltage: 1500 V UL / 1000 V TUV
• Maximum Series Fuse Rating: 30 A
• Communication: PLC (Power Line Communication)
• Connectors: Input – Stäubli MC4 (PV-KBT4 & KST4) or customized
• Cable Length: Input 500 mm (0.5 m), Output 2400 mm (2.4 m)
• Dimensions (without cables): 5.5″ × 2″ × 0.8″ (140 × 50.6 × 20 mm)
• Enclosure Rating: IP68 / NEMA Type 6P
• Operating Temperature: -40°F to +167°F (-40°C to +75°C)
• Certifications: UL 1741, CSA C22.2 No. 330-17, IEC/EN 62109-1, NEC 690.12 compliant, SunSpec, FCC Part 15

Who It’s For

The APsmart RSD-D-20 20A 1500V Receiver (446101) is perfect for solar installers working on systems with high-power modules, longer strings, or commercial arrays that require higher current handling. It pairs seamlessly with the APsmart Transmitter-PLC to deliver fast, reliable, module-level rapid shutdown while reducing installation time and costs.

Ensure full NEC 690.12 compliance with high-current dual-module rapid shutdown using the APsmart RSD-D-20.