ABB 1SVR560730R3401 CM-UFD.M31 3C/O Grid Feeding Voltage Monitoring Relay L-L 0-540V AC L-N 0-312V AC

The ABB CM-UFD.M31 (SKU: 1SVR560730R3401) is a grid feeding voltage monitoring relay from the CM-UFD series, designed to monitor AC supply voltage in grid-connected photovoltaic and distributed energy systems. Offering a 3-changeover-contact output, a line-to-line measurement range of 0–540V AC and line-to-neutral range of 0–312V AC, the CM-UFD.M31 ensures compliant disconnection of grid-feeding inverters in accordance with German VDE-AR-N grid codes.

Technical Specifications

Certifications & Standards

• VDE-AR-N 4105: German grid connection standard for low-voltage power generating systems — verified compliant
• VDE-AR-N 4110: German grid connection standard for medium-voltage power generating systems — verified compliant
• VDE-AR-N 4120: German grid connection standard for high-voltage power generating systems — verified compliant
• VDE: Verband der Elektrotechnik — German electrical safety and quality certification
• CSA: Canadian Standards Association — certified for use in North American markets
• REACH: EU Regulation (EC) No 1907/2006 — substances of very high concern compliance confirmed
• RoHS: Restriction of Hazardous Substances Directive 2011/65/EU — compliant, hazardous substance restrictions met
• CE: European Conformity marking — product meets all applicable EU directives

Applications & Use Cases

• Grid-feeding photovoltaic (PV) inverter disconnection monitoring
• Distributed energy resource (DER) grid interface protection
• Low-, medium-, and high-voltage grid compliance monitoring per VDE-AR-N 4105 / 4110 / 4120
• Industrial and commercial control panels requiring certified voltage supervision
• Renewable energy installations requiring automatic grid disconnection on voltage anomaly

Frequently Asked Questions

What is the CM-UFD.M31 used for?
The CM-UFD.M31 is a grid feeding monitoring relay used to supervise AC supply voltage in grid-connected systems. It detects voltage anomalies and triggers its 3 changeover contacts to disconnect grid-feeding inverters in compliance with VDE-AR-N grid codes.

What voltage ranges does the CM-UFD.M31 support?
It monitors line-to-line (L-L) voltages from 0 to 540V AC and line-to-neutral (L-N) voltages from 0 to 312V AC, making it suitable for standard European three-phase systems.

Which grid codes is the CM-UFD.M31 certified to?
The relay is certified to VDE-AR-N 4105 (low voltage), VDE-AR-N 4110 (medium voltage), and VDE-AR-N 4120 (high voltage), as well as holding CE, VDE, CSA, REACH, and RoHS certifications.