User manual for the MP-3AC motor protector covering features, parameters, wiring, and Modbus communication.
The MP-3AC motor protector provides over‑current, overload, stall, and phase‑loss protection with audible alarm and relay output. It supports RS485 Modbus RTU communication for remote monitoring and control, and can be integrated with a cloud platform for online supervision.
The manual describes technical specifications, panel operation, parameter setting, transducer configuration, terminal wiring, and detailed Modbus register maps. It also includes examples of Modbus commands for reading and writing device parameters. This manual is written in Chinese.
| Measurement range | 0.0–7000 A |
|---|---|
| Output relay contact rating | 7 A / 250 VAC or 7 A / 30 VDC |
| Auxiliary power supply | 85–265 VAC or 110–360 VDC |
| Installation method | 35 mm DIN rail |
| Dimensions | 107 mm × 93 mm × 59 mm |
| Weight | <400 g |
| Operating temperature | -20 °C to 60 °C |
| Humidity range | 10%–85% |
| Protection rating | IP30 |
| Modbus address range | 1–32 (default 1) |
| Baud rate | 9600 bps |
It uses an RS485 interface with Modbus RTU protocol for communication with PLCs or supervisory software.
The default Modbus address is 1, with a configurable range of 0–32.