ABB CM-UFD.M31 multifunctional grid feeding monitoring relay with 24-240 V AC/DC supply, 0-540 V AC monitoring range and three changeover relay outputs for renewable energy interface protection.
£727.03
The ABB 1SVR560730R3401, also known as the CM-UFD.M31, is a multifunctional grid feeding monitoring relay designed to provide reliable interface protection between renewable energy generation systems and the public electricity grid. It continuously monitors voltage and frequency parameters to ensure safe grid connection and compliance with recognised utility requirements.
Designed in accordance with VDE-AR-N 4105 and the BDEW guideline, the CM-UFD.M31 provides comprehensive monitoring of overvoltage, undervoltage, overfrequency and underfrequency conditions. It also includes advanced monitoring functions such as vector shift detection, interrupted neutral monitoring, ROCOF (Rate of Change of Frequency) and 10-minute average voltage monitoring.
Supporting a phase-to-phase measuring range of 0-540 V AC and a 24-240 V AC/DC control supply, the relay is ideal for photovoltaic installations, distributed generation systems and industrial grid interface applications requiring dependable protection and monitoring.
The ABB CM-UFD.M31 continuously supervises grid voltage and frequency, ensuring connected renewable energy systems remain within configured operating limits. When an abnormal condition occurs, the relay activates external switching devices to disconnect the generation system, helping protect both the installation and the public electricity network.
Its comprehensive protection functions and universal supply voltage make it suitable for a broad range of renewable energy applications requiring dependable interface monitoring and automatic decoupling.
| Voltage | 540 V |
|---|---|
| Manufacturer | ABB |
| Series | CM-UFD |
| Model | CM-UFD.M31 |
| Product ID | 1SVR560730R3401 |
| Product type | Grid feeding monitoring relay |
| Applicable standard | VDE-AR-N 4105 / BDEW |
| 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 |
| Operating temperature | -20°C to +60°C |
| Dimensions (H × W × D) | 90 × 108 × 67 mm |
| Net weight | approx. 0.304 kg |
| EAN | 4013614492914 |
| HS Code | 85364900 |
The relay provides interface protection by monitoring grid voltage and frequency for renewable energy generation systems connected to the public electricity network.
The product is the ABB CM-UFD.M31 grid feeding monitoring relay.
The CM-UFD.M31 operates from a universal 24-240 V AC/DC control supply.
The relay monitors overvoltage, undervoltage, overfrequency, underfrequency, vector shift, ROCOF, interrupted neutral conditions and 10-minute average voltage.
The CM-UFD.M31 provides three changeover (SPDT) relay outputs for controlling external switching or decoupling devices.
ABB CM-UFD grid feeding monitoring relays are trusted by renewable energy installers and electrical engineers to provide reliable interface protection and safe connection of distributed power 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...