ABB CM-UFD.M35M multifunctional grid feeding monitoring relay with Modbus RTU communication, 24-240 V AC/DC supply, 0-540 V AC measuring range and three changeover relay outputs.
The ABB 1SVR560731R3704, also known as the CM-UFD.M35M, is a multifunctional grid feeding monitoring relay with integrated Modbus RTU communication. It is designed to provide interface protection between renewable energy generation systems and the public electricity grid, continuously monitoring critical electrical parameters to ensure safe and compliant operation.
The CM-UFD.M35M supervises voltage, frequency and grid stability, automatically signalling external switching devices whenever measured values move outside configured limits. Integrated Modbus RTU connectivity enables seamless integration into energy management systems and remote monitoring platforms, making it ideal for modern photovoltaic and distributed energy installations.
Featuring a 0-540 V AC phase-to-phase measuring range, 24-240 V AC/DC universal control supply and three changeover relay outputs, the CM-UFD.M35M delivers dependable grid interface protection for commercial and industrial renewable energy systems.
The CM-UFD.M35M continuously measures grid voltage and frequency, ensuring renewable energy systems remain connected only when network conditions comply with configured protection thresholds. When abnormal conditions occur, the relay operates external switching devices to safely disconnect the installation from the public grid.
Integrated Modbus RTU communication allows operating status, alarms and measurement data to be transmitted to supervisory control and energy management systems, simplifying diagnostics and remote asset management.
| Voltage | 540 V |
|---|---|
| Manufacturer | ABB |
| Series | CM-UFD |
| Model | CM-UFD.M35M |
| Product ID | 1SVR560731R3704 |
| Product type | Grid feeding monitoring relay |
| Communication | Modbus RTU |
| Rated control supply | 24-240 V AC/DC |
| Phase-to-phase measuring range | 0-540 V AC |
| Phase-to-neutral measuring range | 0-312 V AC |
| Output contacts | 3 changeover (SPDT) contacts |
| Terminal type | Screw terminals |
| Mounting type | DIN rail mounting |
| Protection rating | IP20 |
| Dimensions (H × W × D) | 90 × 108 × 67 mm |
| Net weight | approx. 0.31 kg |
| HS Code | 85364900 |
It provides interface protection between renewable energy systems and the public electricity grid while monitoring voltage, frequency and grid stability.
The product is the ABB CM-UFD.M35M multifunctional grid feeding monitoring relay.
Yes. The CM-UFD.M35M includes an integrated Modbus RTU communication interface for remote monitoring and system integration.
The relay monitors phase-to-phase voltages from 0 to 540 V AC and phase-to-neutral voltages from 0 to 312 V AC.
The relay provides three changeover (SPDT) relay outputs for controlling external decoupling equipment.
ABB CM-UFD monitoring relays are trusted worldwide to provide dependable interface protection, intelligent monitoring and reliable communication for modern renewable energy and distributed generation systems.
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2025 has been a big year for LED Controls, and our blog has expanded accordingly. We've covered a wide range of topics across industrial control and factory automation this year. From core technology explainers and new product releases to panel building best practice...