SMA Sunny Tripower X 20kW 1000VDC 480VAC Inverter

The SMA Sunny Tripower X (STP-20-US-50) is a three-phase, transformerless grid-tie inverter for commercial and large residential PV systems. It delivers 20 kW of continuous power at 97.5% efficiency, accepts up to 1000 VDC across three MPPT trackers, and supports a maximum PV array of 30000 Wp. OptiCool variable-speed cooling, an integrated load-rated DC disconnect and a Type 4X enclosure suit demanding Canadian outdoor installations across a wide temperature range.

Key Features:

• 20 kW continuous power, 97.5% efficiency
• Three-phase, transformerless topology
• 3 MPPT trackers, 2 strings each
• MPP range 350 V to 800 V, max 1000 VDC
• Max PV array 30000 Wp, max input 24 A
• Output 480 V / 277 V, 24 A, 60 Hz
• DC AFCI, ground fault and grid monitoring
• Ethernet, WiFi, Speedwire and Modbus
• Type 4X enclosure, -13°F to 140°F
• 28.7 x 30 x 10.5 in, 77 lbs, 10-year warranty

Ideal for three-phase commercial and utility-scale rooftop and ground-mount arrays, the Sunny Tripower X integrates SunSpec PLC rapid shutdown, ShadeFix optimization, I-V curve diagnostics and SMA Smart Connected monitoring. Certified to UL 1741SB, IEEE 1547-2018 and CAN/CSA 22.2, it fits grid-interactive installations requiring integrated plant control. Order the STP-20-US-50 (also listed as STP20US50) from Circuit Solar, in stock in Canada and shipped from Red Deer, AB.