Huawei DTSU666-H Smart Meter (250A, RS485) Huawei DTSU666-H is an intelligent three-phase energy meter compatible with all Huawei inverter models of the M0, M1, M2, and M3 series. It is ideal for solar systems operating in self-consumption mode, as well as for residential and small commercial applications. This smart meter uses a high-speed digital sampling circuit to accurately monitor key power metrics, including 3-phase voltage, current, active and reactive power, forward and reverse energy, and more. All data is transmitted in real-time via the RS485 interface. Main advantages: Works with 3-phase grid systems Supports current up to 250 A (with CTs) Compatible with Huawei inverters (M0/M1/M2/M3) Limits active power output based on consumption LED screen for easy local monitoring Simple DIN35 rail mounting Technical Specifications: Manufacturer Huawei Model DTSU666-H Compatible with Huawei M0 / M1 / M2 / M3 inverters Communication Interface RS485 Mounting DIN35 rail Display LED screen Dimensions 100 × 72 × 65.5 mm Weight 1.5 kg Operating Temperature -25°C to 60°C Humidity 5% – 95% Phase Voltage Input 176 V – 288 V Line Voltage Range 304 V – 499 V Max Current Up to 250 A Measurement Accuracy Voltage: ±0.5%, Current: ±1%, Frequency: ±0.01 Hz The Huawei DTSU666-H smart meter is a reliable and essential component for solar power systems that require energy management, real-time tracking, and export limitation. Perfect for residential and commercial solar setups.
