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    Fortress Power APSmart Module Level Rapid Shutdown for 2 solar panels max current 20A MC4 with brackets compatible with Envy inverters - AP Smart Duo

    Fortress Power APSmart Module Level Rapid Shutdown for 2 solar panels max current 20A MC4 with brackets compatible with Envy inverters - AP Smart Duo

    $49.99 USD
    $49.99 USD
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    • SKU:PES-SPS-SIV-0667
    • Brand: Fortress Power
    • Competitor price comparison: {"pes_price":49.99,"avg_competitor_price":37.25,"min_competitor_price":37.25,"max_competitor_price":37.25,"diff_pct":-25.5,"competitor_count":1,"checked_at":"2026-07-21"}
    • Container price: $26,994.60 USD
    • Container qty: 720
    • Odoo id: 40,977
    • Pallet price: $1,274.75 USD
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    Product Description

    • APSmart RSD-D-20 (Duo) — SunSpec-PLC Module-Level Rapid Shutdown

      APSmart RSD-D-20 is a dual-input (2-module) rapid shutdown receiver that operates on the SunSpec PLC signal. If it does not receive a heartbeat from the APsmart Transmitter (or any inverter’s integrated SunSpec transmitter), it immediately brings the array to safe voltage — NEC 2017/2020 (690.12) compliant. [datasheet]

      Key features




      • Duo channel: 2 PV modules per unit (simplifies wiring & cost)


      • 20A per channel continuous; suitable for modern high-Isc modules


      • SunSpec PLC comms, APsmart Transmitter compatible; many inverters (e.g., Fortress Envy) have a built-in transmitter


      • IP68 / NEMA 6P potting & enclosure; −40 °C to +75 °C operation

      • MC4 (Stäubli PV-KBT4/KST4) connectors; 0.5 m input / 2.2 m output leads


      • Max system voltage: 1000 V (TÜV) / 1500 V (UL)

      Specifications






























































      APSmart RSD-D-20 (Duo) — specification box
      Electrical — Input (per channel)
      Operating voltage 8–65 V (max input 80 V)
      Max continuous current
      20 A (Isc 25 A)
      Electrical — Output
      Operating voltage 16–130 V (max 160 V)
      Max continuous current 20 A
      Max system voltage 1000 V (TÜV) / 1500 V (UL)
      Series fuse rating 30 A
      Mechanical
      Body size (W × H × D) 5.5″ × 2.0″ × 0.8″ (excluding cables)
      Cables Input 0.5 m · Output 2.2 m; TUV 4 mm² / UL 12 AWG
      Connectors Stäubli MC4 PV-KBT4 & KST4
      Enclosure / rating Fully potted; IP68 / NEMA 6P; over-temperature protection
      Compliance
      Safety NEC 2017/2020 (690.12), UL1741, CSA C22.2 No. 330-17, IEC/EN 62109-1
      EMC FCC Part 15, ICES-003
      Communication Power Line Communication (SunSpec)
      Ordering
      Model RSD-D-20 (ordering code 446101)

      Specs have been verified from the official APSmart datasheet; note in manufacturer docs that Envy inverter has a built-in APsmart transmitter. [datasheet / Envy]