3UG4616-2CR20

The Siemens SIRIUS 3UG4616-2CR20 three-phase voltage monitoring relay supports neutral line connection, reversible phase sequence unaffected by wiring order, independent Umin/Umax output contacts, and spring-loaded terminals for convenient and quick wiring.

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Siemens SIRIUS 3UG4616-2CR20 Three-Phase Voltage Monitoring Station Product Image

Product Positioning

The 3UG4616-2CR20 is a Siemens SIRIUS three-phase voltage monitoring relay. Its reversible phase sequence design makes it unaffected by phase sequence wiring and supports neutral connection measurement.

Core Product Advantages and Features

Reversible phase sequence is not affected by wiring

Regardless of the phase sequence, normal monitoring is possible, reducing the problems caused by wiring errors on site.

Supports neutral (N) connection method

It can be measured within the range of 90 to 400V relative to the neutral line and is suitable for three-phase four-wire power supply systems.

Independent Umin/Umax output

It provides one set of CO corresponding to Umin and one set of CO corresponding to Umax, which can be connected to different alarm circuits respectively.

Spring-loaded terminal quick-connect

The spring clip terminal design allows for screwless wiring, speeding up installation.

project	Specification
Model (MLFB)	3UG4616-2CR20
Monitoring function	Reversible phase sequence identification, phase loss detection, over/under voltage
Voltage measurement range	3x90~400V AC (corresponding to 3x160~690V between lines), 50/60Hz
Output contacts	One set of CO corresponds to Umin, and one set of CO corresponds to Umax.
Terminal type	Spring-type terminals
Hysteresis	1~20V adjustable
Action delay time	Adjustable from 0 to 20 seconds
Installation dimensions	22.5 x 103 x 91 mm
Certification	CCC, UL, EAC, RCM, CE, marine classification, rail transportation

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